DENON AVR-684 - AV amplifier

AVR-684 - AV amplifier DENON - Free user manual and instructions

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Download the instructions for your AV amplifier in PDF format for free! Find your manual AVR-684 - DENON and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. AVR-684 by DENON.

USER MANUAL AVR-684 DENON

We greatly appreciate your purchase of this unit.
To be sure you take maximum advantage of all the features this unit has to offer, read these instructions carefully and use the set properly. Be sure to keep this manual for future reference should any questions or problems arise.

POUR LES LECTEURS FRANCAIS PAGE 2,63\~ PAGE 126

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

DENON AVR-684 - 1

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

FOR CANADA MODEL ONLY

CAUTION

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.

POUR LES MODELE CANADIEN UNIQUEMENT

ATTENTION

POUR ÉVITER LES CHOCS ÉLECTRIQUES, INTERODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRESE ET POUSSER JUSQU' AU FOND.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

  1. Read Instructions - All the safety and operating instructions should be read before the product is operated.
  2. Retain Instructions - The safety and operating instructions should be retained for future reference.
  3. HeedWarnings - All warnings on the product and in the operating instructions should be adhered to.
  4. Follow Instructions - All operating and use instructions should be followed.
  5. Cleaning - Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners.
  6. Attachments - Do not use attachments not recommended by the product manufacturer as they may cause hazards.
  7. Water and Moisture - Do not use this product near water - for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool; and the like.
  8. Accessories - Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer's instructions, and should use a

mounting accessory recommended by the manufacturer.

  1. A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn.

DENON AVR-684 - ATTENTION - 1

  1. Ventilation – Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have been adhered to.
  2. Power Sources - This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions.
  3. Grounding or Polarization - This product may be equipped with a polarized alternating-current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug.

DENON AVR-684 - ATTENTION - 2

  1. Power-Cord Protection - Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.
  2. Outdoor Antenna Grounding - If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See Figure A.
  3. Lightning - For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power-line surges.
  4. Power Lines - An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.
  5. Overloading – Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock.
  6. Object and Liquid Entry - Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.
  7. Servicing - Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.
  8. Damage Requiring Service - Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:

a) When the power-supply cord or plug is damaged,
b) If liquid has been spilled, or objects have fallen into the product,
c) If the product has been exposed to rain or water,
d) If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation,
e) If the product has been dropped or damaged in any way, and
f) When the product exhibits a distinct change in performance – this indicates a need for service.

  1. Replacement Parts - When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.
  2. Safety Check – Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.
  3. Wall or Ceiling Mounting - The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
  4. Heat - The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products (including amplifiers) that produce heat.

INTRODUCTION

Thank you for choosing the DENON A/V Surround receiver. This remarkable component has been engineered to provide superb surround sound listening with home theater sources such as DVD, as well as providing outstanding high fidelity reproduction of your favorite music sources.

As this product is provided with an immense array of features, we recommend that before you begin hookup and operation that you review the contents of this manual before proceeding.

TABLE OF CONTENTS

1 Before Using 4
2 Cautions on Installation 5
3 Cautions on Handling 5
4 Features. 5
5 Part Names and Functions 6,7
6 Read this first 8
7 Setting up the Speaker Systems. 8
8 Connections 9-15
9 Using the Remote Control Unit. 16
10 Setting up the System 17-26

11 Remote Control Unit 27-31
12 Operation 32-36
13 Surround. 37-45
14DSP Surround Simulation. 46-50
15 Listening to the Radio 51-53
16 Last Function Memory 54
[17] Initialization of the Microprocessor 54
18 Additional Information 55-60
19 Troubleshooting 61
20 Specifications 62

List of Preset Codes. 122-126

■ ACCESSORIES

Check that the following parts are included in addition to the main unit:

① Operating instructions 1
② Warranty 1
③ Service station list. 1
④ Remote control unit (RC-941)

DENON AVR-684 - Check that the following parts are included in addition to the main unit: - 1

DENON AVR-684 - Check that the following parts are included in addition to the main unit: - 2
(5)

(5) R6P/AA batteries 2
⑥ AM loop antenna 1
⑦ FM indoor antenna. 1

DENON AVR-684 - Check that the following parts are included in addition to the main unit: - 3

DENON AVR-684 - Check that the following parts are included in addition to the main unit: - 4

1 BEFORE USING

Pay attention to the following before using this unit:

- Moving the set

To prevent short circuits or damaged wires in the connection cords, always unplug the power cord and disconnect the connection cords between all other audio components when moving the set.

- Before turning the power operation switch on

Check once again that all connections are proper and that there are not problems with the connection cords. Always set the power operation switch to the standby position before connecting and disconnecting connection cords.

- Store this instructions in a safe place.

After reading, store this instructions along with the warranty in a safe place.

- Note that the illustrations in this instructions may differ from the actual set for explanation purposes.

V. AUX terminal

The AVR-1604/684's front panel is equipped with a V. AUX terminal. Remove the cap covering the terminal when you want to use it.

DENON AVR-684 - AUX terminal - 1

2 CAUTIONS ON INSTALLATION

Noise or disturbance of the picture may be generated if this unit or any other electronic equipment using microprocessors is used near a tuner or TV.

If this happens, take the following steps:

  • Install this unit as far as possible from the tuner or TV.
  • Set the antenna wires from the tuner or TV away from this unit's power cord and input/output connection cords.
  • Noise or disturbance tends to occur particularly when using indoor antennas or 300 /ohms feeder wires. We recommend using outdoor antennas and 75 /ohms coaxial cables.

For heat dispersal, leave at least 0.3 ft (10 cm) of space between the top, back and sides of this unit and the wall or other components.

3 CAUTIONS ON HANDLING

  • Switching the input function when input jacks are not connected

A clicking noise may be produced if the input function is switched when nothing is connected to the input jacks. If this happens, either turn down the MASTER VOLUME control or connect components to the input jacks.

  • Muting of PRE OUT jack, HEADPHONE jack and SPEAKER terminals

The PRE OUT jack, HEADPHONE jack and SPEAKER terminals include a muting circuit. Because of this, the output signals are greatly reduced for several seconds after the power operation switch is turned on or input function, surround mode or any other set-up is changed.

4 FEATURES

  1. Dolby Digital EX decoder system

Dolby Digital EX is a 6.1-channel surround format proposed by Dolby Laboratories that allows users to enjoy in their homes the "DOLBY DIGITAL SURROUND EX" audio format jointly developed by Dolby Laboratories and Lucas Films and first used for the movie "Star Wars Episode 1 - Phantom Menace".

The 6.1 channels of sound, including surround back channels, provide improved sound positioning and expression of space.

  1. DTS-ES Extended Surround and DTS Neo:6

The AVR-1604/684 is compatible with DTS-ES Extended Surround, a new multi-channel format developed by Digital Theater Systems Inc. The AVR-1604/684 is also compatible with DTS Neo:6, a surround mode allowing 6.1-channel playback of regular stereo sources.

  1. Dolby Pro Logic II decoder

Dolby Pro Logic II is a new format for playing multichannel audio signals that offers improvements over conventional Dolby Pro Logic. It can be used to decode not only sources recorded in Dolby Surround but also regular stereo sources into five channels (front left/right, center and surround left/right). In addition, various parameters can be set according to the type of source and the contents, so you can adjust the sound field with greater precision.

  1. Dolby Digital decoder

Using advanced digital processing algorithms, Dolby Digital provides up to 5.1 channels of wide-range, high fidelity surround sound. Dolby Digital is the default digital audio delivery system for DVD and North American DTV.

DENON AVR-684 - FEATURES - 1

DENON AVR-684 - FEATURES - 2

If the volume is turned up during this time, the output will be very high after the muting circuit stops functioning. Always wait until the muting circuit turns off before adjusting the volume.

  • Whenever the power operation switch is in the STANDBY state, the apparatus is still connected on some AC line voltages.

Please be sure to unplug the cord when you leave home for, say, a vacation.

  1. DTS (Digital Theater Systems)

DTS provides up to 5.1 channels of wide-range, high fidelity surround sound, from sources such as laser disc, DVD and specially-encoded music discs.

  1. Auto Surround Mode

This function stores the surround mode last used for an input signal in the memory and automatically sets that surround mode the next time that signal is input.

  1. 6CH EXT. IN jackets

This unit is equipped with 6CH EXT. IN jacks for use with audio formats of the future.

  1. High performance DSP simulates 7 sound fields

Playback is possible in 7 surround modes: 5/6-channel Stereo, Mono Movie, Rock Arena, Jazz Club, Video Game, Matrix and Virtual. You can enjoy a variety of sound effects for different movie scenes and program sources even with stereo sources not in Dolby Surround.

  1. Personal Memory Plus function

Personal Memory Plus is an advanced version of Personal Memory. With Personal Memory Plus, the set automatically memorizes the surround mode, channel volume, surround parameters, etc., for each of the separate input sources.

PART NAMES AND FUNCTIONS

Front Panel

  • For details on the functions of these parts, refer to the pages given in parentheses ( ).

DENON AVR-684 - Front Panel - 1

1 Power operation switch (18, 32, 51)
2 Headphones jack (PHONES). (35)
3 INPUT MODE button. (33, 36, 43)
4 SPEAKER A/B buttons. (32, 54)
5 SURROUND BACK button (43)
6 ANALOG button (33, 36)
EXT.IN button (33,36)
DOLBY/DTS SURROUND button (37, 39, 43)
5CH/6CH STEREO button (46, 49)
10 DIRECT/STEREO button. (46)
11 TUNING (up) / (down) buttons. (52)
12VIDEO SELECT button (35)
13 V. AUX terminals.. (4, 11)
14 SURROUND MODE button. (34, 49)
15 SURROUND PARAMETER button. (39, 47)

16 SELECT knob. (34, 39, 49)
17 TONE DEFEAT button (34)
18 TONE CONTROL button. (34)
19 MASTER VOLUME control. (34)
STATUS button (35)
DIMMER button (35)
22 Master volume indicator (VOLUME LEVEL) (34)
Display
24 Preset station select buttons (51, 53)
25 BAND button (52)
26 SIGNAL indicators. (34)
27 INPUT mode indicators. (34)
Remote control sensor (REMOTE SENSOR) (16)
29 Power operation indicator (ON/STANDBY)
30 INPUT SELECTOR knob (33)

Remote control unit

  • For details on the functions of these parts, refer to the pages given in parentheses ( ).

DENON AVR-684 - Remote control unit - 1
NOTE:
The shaded buttons

DENON AVR-684 - Remote control unit - 2
do not function with the AVR-1604/684.
(Nothing happens when they are pressed.)

6 READ THIS FIRST

This AV Surround Receiver must be setup before use. Following these steps.

Step 1 (page 8 to 15)

Choose the best location to setup the Speakers and connecting the components.

Step 2 (page 16)

Next, insert the batteries into the remote control unit.

Step 3 (page 17 to 26)

Finally, setting up the system.

7 SETTING UP THE SPEAKER SYSTEMS

Speaker system layout

Basic system layout

  • The following is an example of the basic layout for a system consisting of seven speaker systems and a television monitor:

DENON AVR-684 - Speaker system layout - 1

8 CONNECTIONS

  • Do not plug in the power cord until all connections have been completed.
  • Be sure to connect the left and right channels properly (left with left, right with right).
  • Insert the plugs securely. Incomplete connections will result in the generation of noise.
  • Use the AC OUTLETS for audio equipment only. Do not use them for hair driers, etc.

  • Note that binding pin plug cords together with power cords or placing them near a power transformer will result in generating hum or other noise.

  • Noise or humming may be generated if a connected audio equipment is used independently without turning the power of this unit on. If this happens, turn on the power of the this unit.

DENON AVR-684 - CONNECTIONS - 1
Connecting the audio components

Connecting the video equipments

To connect the video signal, connect using a 75 Ω/ohms video signal cable cord. Using an improper cable can result in a drop in sound quality.

DENON AVR-684 - Connecting the video equipments - 1

Connecting a video decks

Video input/output connections:

  • Connect the video deck's video output jack (VIDEO OUT) to the Video (yellow) VCR IN jack, and the video deck's video input jack (VIDEO IN) to the Video (yellow) VCR OUT jack using 75 Ω/ohms video coaxial pin plug cords.

Connecting the audio output jacks:

  • Connect the video deck's audio output jacks (AUDIO OUT) to the AUDIO VCR IN jacks, and the video deck's audio input jacks (AUDIO IN) to the AUDIO VCR OUT jacks using pin plug cords.

DENON AVR-684 - Connecting the audio output jacks: - 1

Connecting a Video game equipment

  • Connect the Video game equipment's output jacks to this unit's V. AUX INPUT jacks.

Connecting a Video camera equipment

  • Connect the video camera equipment's output jacks to this unit's V. AUX INPUT jacks.

※ The V. AUX terminal is covered with a cap. Remove this cap in order to use the terminal. (See page 4 for instructions on removing the cap.)

Connecting a video component equipped with S-video jacks

  • When marking connections, also refer to the operating instructions of the other components.
  • A note on the S input jacks

The input selectors for the S inputs and pin jack inputs work in conjunction with each other.

  • Precaution when using S-jacks

This unit's S-jacks (input and output) and video pin jacks (input and output) have independent circuit structures, so that video signals input from the S-jacks are only output from the S-jack outputs and video signals input from the pin jacks are only output from the pin jack outputs. When connecting this unit with equipment that is equipped with S-jacks, keep the above point in mind and make connections according to the equipment's instruction manuals.

DENON AVR-684 - Connecting a video component equipped with S-video jacks - 1

Connecting a Video Component Equipped with Color Difference (Component - Y, PR/CR,

  • When making connections, also refer to the operating instructions of the other components.
  • The signals input to the color difference (component) video jacks are not output from the VIDEO output jack (yellow) or the S-Video output jack. In addition, the video signals input to theVIDEO input (yellow) and S-Video input jacks are not output to the color difference (component) video jacks.
  • Some video sources with component video outputs are labeled Y, CB, CR, or Y, Pb, Pr, or Y, R-Y, B-Y. These terms all refer to component video color difference output.

DENON AVR-684 - Connecting a Video Component Equipped with Color Difference (Component - Y, PR/CR, - 1

Connecting a DVD player

DVD IN jackets

  • Connect the DVD player's color difference (component) video output jacks (COMPONENT VIDEO_OUTPUT) to the COMPONENT DVD IN jack using 75 Ω/ohms coaxial video pin-plug cords.
  • In the same way, another video source with component video outputs such as a TV/DBS tuner, etc., can be connected to the TV/DBS color difference (component) video jacks.

Connecting a monitor TV

MONITOR OUT jack

  • Connect the TV's color difference (component) video input jacks (COMPONENT VIDEO INPUT) to the COMPONENT MONITOR OUT jack using 75 Ω/ohms coaxial video pin-plug cords.

  • The color difference input jacks may be indicated differently on some TVs, monitors or video components ("CR, CB and Y", "R-Y, B-Y and Y", "Pr, Pb and Y", etc.). For details, carefully read the operating instructions included with the TV or other component.

Connecting the antenna terminals

DENON AVR-684 - Connecting the antenna terminals - 1

AM loop antenna assembly

DENON AVR-684 - AM loop antenna assembly - 1

DENON AVR-684 - AM loop antenna assembly - 2

Notes:

  • Do not connect two FM antennas simultaneously.
  • Even if an external AM antenna is used, do not disconnect the AM loop antenna.
  • Make sure AM loop antenna lead terminals do not touch metal parts of the panel.

Speaker system connections

  • Connect the speaker terminals with the speakers making sure that like polarities are matched (⊕ with ⊕, ⊙ with ⊙). Mismatching of polarities will result in weak central sound, unclear orientation of the various instruments, and the sense of direction of the stereo being impaired.
  • When making connections, take care that none of the individual conductors of the speaker cord come in contact with adjacent terminals, with other speaker cord conductors, or with the rear panel.

NOTE:

NEVER touch the speaker terminals when the power is on. Doing so could result in electric shocks.

Speaker Impedance

  • When speaker systems A and B are use separately, speakers with an impedance of 6 to 16/ ohms can be connected for use as front speakers.
  • Be careful when using two pairs of front speakers (A + B) at the same time, since use of speakers with an impedance of 12 to 16/ohms .
  • Speakers with an impedance of 6 to 16/ohms can be connected for use as center and surround and surround back speakers.
  • The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an impedance lower than the specified impedance are connected.

  • Loosen by turning counterclockwise.

  • Insert the cord.

  • Tighten by turning clockwise.

DENON AVR-684 - Speaker Impedance - 1
Connecting the speaker cords

DENON AVR-684 - Speaker Impedance - 2

DENON AVR-684 - Speaker Impedance - 3

DENON AVR-684 - Speaker Impedance - 4

DENON AVR-684 - Speaker Impedance - 5

  1. Push the lever.

  2. Insert the cord.

  3. Return the lever.

DENON AVR-684 - Speaker Impedance - 6

DENON AVR-684 - Speaker Impedance - 7

DENON AVR-684 - Speaker Impedance - 8
Connecting banana plugs

banana plug

Turn clockwise to tighten, then insert the banana plug.

System A

(L)

(R)

DENON AVR-684 - Speaker Impedance - 9

System B

(L)

(R)

DENON AVR-684 - Speaker Impedance - 1

DENON AVR-684 - Speaker Impedance - 2

DENON AVR-684 - Speaker Impedance - 3

Connection jack for subwoofer with built-in amplifier (super woofer), etc.

To achieve Dolby Digital playback effect, use a unit that can sufficiently reproduce frequencies of under 80Hz

DENON AVR-684 - Speaker Impedance - 4

  • Precautions when connecting speakers

If a speaker is placed near a TV or video monitor, the colors on the screen may be disturbed by the speaker's magnetism. If this should happen, move the speaker away to a position where it does not have this effect.

Protector circuit

  • This unit is equipped with a high-speed protection circuit. The purpose of this circuit is to protect the speakers under circumstances such as when the output of the power amplifier is inadvertently short-circuited and a large current flows, when the temperature surrounding the unit becomes unusually high, or when the unit is used at high output over a long period which results in an extreme temperature rise.

When the protection circuit is activated, the speaker output is cut off and the power supply indicator LED flashes. Should this occur, please follow these steps: be sure to switch off the power of this unit, check whether there are any faults with the wiring of the speaker cables or input cables, and wait for the unit to cool down if it is very hot. Improve the ventilation condition around the unit and switch the power back on.

If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around the unit, switch off the power and contact a DENON service center.

Note on speaker impedance

  • The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an impedance lower than the specified impedance (for example speakers with an impedance of lower than 4/ohms ) are connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set's power, wait for the set to cool down, improve the ventilation around the set, then turn the power back on.

9 USING THE REMOTE CONTROL UNIT

Following the procedure outlined below, insert the batteries before using the remote control unit.

Range of operation of the remote control unit

DENON AVR-684 - Range of operation of the remote control unit - 1

Point the remote control unit at the remote control sensor as shown on the diagram at the left.

NOTES:

  • The remote control unit can be used from a straight distance of approximately 23 feet/7 meters, but this distance will shorten or operation will become difficult if there are obstacles between the remote control unit and the remote control sensor, if the remote control sensor is exposed to direct sunlight or other strong light, or if operated from an angle.
  • Neon signs or other devices emitting pulse-type noise nearby may result in malfunction, so keep the set as far away from such devices as possible.

Inserting the batteries

① Press as shown by the arrow and slide off.

DENON AVR-684 - Inserting the batteries - 1

② Insert the R6P/AA batteries properly, as shown on the diagram.

DENON AVR-684 - Inserting the batteries - 2

③ Close the lid.

DENON AVR-684 - Inserting the batteries - 3

NOTES:

  • Use only R6P/AA batteries for replacement.
  • Be sure the polarities are correct. (See the illustration inside the battery compartment.)
  • Remove the batteries if the remote control transmitter will not be used for an extended period of time.
  • If batteries leak, dispose of them immediately. Avoid touching the leaked material or letting it come in contact with clothing, etc. Clean the battery compartment thoroughly before installing new batteries.
  • Have replacement batteries on hand so that the old batteries can be replaced as quickly as possible when the time comes.
  • Even if less than a year has passed, replace the batteries with new ones if the set does not operate even when the remote control unit is operated nearby the set. (The included battery is only for verifying operation. Replace it with a new battery as soon as possible.)

10 SETTING UP THE SYSTEM

  • Once all connections with other AV components have been completed as described in "CONNECTIONS" (see pages 9 to 15), make the various settings described below on the display.

These settings are required to set up the listening room's AV system centered around the this unit.

1 Set the slide switch to "AUDIO".

DENON AVR-684 - SETTING UP THE SYSTEM - 1

Use the following buttons to set up the system:

DENON AVR-684 - SETTING UP THE SYSTEM - 2

  • System setup items and default values (set upon shipment from the factory)
System setupDefault settings
Speaker ConfigurationInput the combination of speakers in your system and their corresponding sizes (SMALL for regular speakers, LARGE for full-size, full-range) to automatically set the composition of the signals output from the speakers and the frequency response.Front Sp.Center Sp.Surround Sp.Surround back Sp.Subwoofer
LargeSmallSmallSmallYes
Subwoofer ModeThis selects the subwoofer speaker for playing deep bass signals.Subwoofer mode = Normal
Crossover FrequencySet the frequency (Hz) below which the bass sound of the various speakers is to be output from the subwoofer.80 Hz
Delay TimeThis parameter is for optimizing the timing with which the audio signals are produced from the speakers and subwoofer according to the listening position.Front LFront RCenterSurround LSurround RSurround BackSubwoofer
12 ft12 ft12 ft10 ft10 ft10 ft12 ft
Test ToneThis adjusts the volume of the signals output from the speakers and subwoofer for the different channels in order to obtain optimum effects.Front LFront RCenterSurround LSurround RSurround BackSubwoofer
0 dB0 dB0 dB0 dB0 dB0 dB0 dB
Digital In AssignmentThis assigns the digital input jacks for the different input sources.Digital InputsCOAXIALOPTICAL 1OPTICAL 2
Input sourceCDDVD/VDPTV/DBS
Auto Surround ModeAuto surround mode function setting.Auto Surround Mode = ON
Ext. In SW LevelSet the Ext. In Subwoofer channel playback level.Ext. In SW Level = +15 dB

NOTE:

  • The system setup is not displayed when "HEADPHONE ONLY" is selected.

Before setting up the system

1

DENON AVR-684 - Before setting up the system - 1
ON/STANDBY

DENON AVR-684 - Before setting up the system - 2
(Main unit)
(Remote control unit)

2

DENON AVR-684 - Before setting up the system - 3

Check that all the components are correct, then press the POWER operation switch on the main unit or the POWER button on the remote control unit to turn on the power.

*SYSTEM SET UP

NOTE: Please make sure the "AUDIO" position of the slide switch on the remote control unit.

3

DENON AVR-684 - Before setting up the system - 4

Press the ENTER or (down) button to switch to the speaker configuration set up.

NOTE:

Press the SYSTEM SETUP button again to finish system set up. System set up can be finished at any time. The changes to the settings made up to that point are entered.

Setting the speaker configuration

1

DENON AVR-684 - Setting the speaker configuration - 1

DENON AVR-684 - Setting the speaker configuration - 2

DENON AVR-684 - Setting the speaker configuration - 3

DENON AVR-684 - Setting the speaker configuration - 4

Use the (left) and (right) buttons to select your front speaker type.

1 FRONT LARGE

DENON AVR-684 - Setting the speaker configuration - 5
(Initial)

DENON AVR-684 - Setting the speaker configuration - 6
(left) button
(right) button

Press the ENTER or (down) button to switch to the center speaker setting.

2

DENON AVR-684 - Setting the speaker configuration - 7

DENON AVR-684 - Setting the speaker configuration - 8

DENON AVR-684 - Setting the speaker configuration - 9

DENON AVR-684 - Setting the speaker configuration - 10

Use the (left) and (right) buttons to select your center speaker type.

2 CENTER SMALL

DENON AVR-684 - Setting the speaker configuration - 11
(Initial)
SMALL

DENON AVR-684 - Setting the speaker configuration - 12

DENON AVR-684 - Setting the speaker configuration - 13

DENON AVR-684 - Setting the speaker configuration - 14

DENON AVR-684 - Setting the speaker configuration - 15
(left) button
(right) button

Press the ENTER or (down) button to switch to the surround speaker setting.

NOTE:

  • When "Small" has been selected for the front speakers, "Large" cannot be selected for the center speaker.

3

DENON AVR-684 - NOTE: - 1

DENON AVR-684 - NOTE: - 2

DENON AVR-684 - NOTE: - 3

DENON AVR-684 - NOTE: - 4

Use the (left) and (right) buttons to select your surround speaker type.

3 SURE: SMALL

DENON AVR-684 - NOTE: - 5
(Initial)
SMALL

DENON AVR-684 - NOTE: - 6
(left) button
(right) button

Press the ENTER or (down) button to switch to the surround back speaker setting.

NOTE:

  • When "Small" has been selected for the front speakers, "Large" cannot be selected for the surround speakers.

4

DENON AVR-684 - NOTE: - 1

DENON AVR-684 - NOTE: - 2

DENON AVR-684 - NOTE: - 3

DENON AVR-684 - NOTE: - 4

Use the (left) and (right) buttons to select your surround back speaker type.

DENON AVR-684 - NOTE: - 5

DENON AVR-684 - NOTE: - 6

Press the ENTER or (down) button to switch to the subwoofer setting.

NOTE:

  • When "Small" has been selected for the surround speakers, "Large" cannot be selected for the surround back speakers.

5

DENON AVR-684 - NOTE: - 1

DENON AVR-684 - NOTE: - 2

DENON AVR-684 - NOTE: - 3

DENON AVR-684 - NOTE: - 4

Use the (left) and (right) buttons to select your subwoofer setting.

DENON AVR-684 - NOTE: - 5

DENON AVR-684 - NOTE: - 6
(Initial)

DENON AVR-684 - NOTE: - 7
(left) button
(right) button

Press the ENTER or (down) button to enter the settings and switch to the subwoofer mode setting.

- Parameters

Large.... Select this when using speakers that can fully reproduce low sounds of below 80Hz

Small.... Select this when using speakers that cannot reproduce low sounds of below 80Hz with sufficient volume. When this setting is selected, low frequencies of below 80Hz are assigned to the subwoofer.

None..... Select this when no speakers are installed.

Yes/No.... Select "Yes" when a subwoofer is installed, "No" when it's not installed.

NOTE:

Select "Large" or "Small" not according to the physical size of the speaker, but according to the bass reproduction capacity at 80Hz . If you cannot determine the best setting, try comparing the sound when set to "Small" and when set to "Large", at a level that will not damage the speakers.

Caution:

In case the subwoofer is not used, be sure to set "Subwoofer = No", or the bass sound of front channel is divided to subwoofer channel and not reproduced in some mode.

Setting the Subwoofer mode and Crossover Frequency

1

DENON AVR-684 - 1 - 1

DENON AVR-684 - 1 - 2

DENON AVR-684 - 1 - 3

DENON AVR-684 - 1 - 4

( right) buttons to select the Subwoofer mode.

6 SU MODE NORM

DENON AVR-684 - 1 - 5
(Initial)

DENON AVR-684 - 1 - 6

DENON AVR-684 - 1 - 7

DENON AVR-684 - 1 - 8
(left) button
(right) button

DENON AVR-684 - 1 - 9

DENON AVR-684 - 1 - 10

2

DENON AVR-684 - 2 - 1

DENON AVR-684 - 2 - 2

Press the ENTER or (down) button to enter the setting and switch to the Crossover Frequency setting.

DENON AVR-684 - 2 - 3

DENON AVR-684 - 2 - 4

Use the (left) and (right) buttons to select the Crossover Frequency.

7CR.OVER 80Hz

DENON AVR-684 - 2 - 5
(Initial)

DENON AVR-684 - 2 - 6

DENON AVR-684 - 2 - 7

DENON AVR-684 - 2 - 8

DENON AVR-684 - 2 - 9
button

DENON AVR-684 - 2 - 10
(right) button

Press the ENTER or (down) button to enter the setting and switch to the SPEAKER DISTANCE setting.

NOTES:

- Assignment of low frequency signal range —

  • The signals produced from the subwoofer channel are LFE signals (during playback of Dolby Digital or DTS signals) and the low frequency signal range of channels set to "SMALL" in the setup. The low frequency signal range of channels set to "LARGE" are produced from those channels.

Crossover Frequency

  • When "Subwoofer" is set to "Yes" at the "Speaker Configuration Setting", set the frequency (Hz) below which the bass sound of the various speakers is to be output from the subwoofer (the crossover frequency).
  • For speakers set to "Small", sound with a frequency below the crossover frequency is cut, and the cut bass sound is output from the subwoofer instead.

NOTE: For ordinary speaker systems, we recommend setting the crossover frequency to 80Hz . When using small speakers, however, setting the crossover frequency to a high frequency may improve frequency response for frequencies near the crossover frequency.

Subwoofer mode

  • The subwoofer mode setting is only valid when "LARGE" is set for the front speakers and "YES" is set for the subwoofer in the "Speaker Configuration" settings (see pages 18, 19). If "SMALL" is set for the front speakers or "NO" is set for the subwoofer, the subwoofer mode setting does not affect playback of low frequency signal range.
  • When the " +MAIN" playback mode is selected, the low frequency signal range of channels set to "LARGE" are produced simultaneously from those channels and the subwoofer channel. In this playback mode, the low frequency range expand more uniformly through the room, but depending on the size and shape of the room, interference may result in a decrease of the actual volume of the low frequency range.
  • When the "NORM" playback mode is selected, the low frequency signal range of channels set to "LARGE" are only produced from those channels. In this playback mode there tends to be little interference of the low frequency range in the room.
  • Try playing the music or movie source and select the playback mode providing the stronger low frequency range sound.

Setting the delay time

  • Input the distance between the listening position and the different speakers to set the delay time for the surround mode.

Preparations:

Measure the distances between the listening position and the speakers (L1 to L5) on the diagram at the right).

L1: Distance between center speaker and listening position
L2: Distance between front speakers and listening position
L3: Distance between surround speakers and listening position
L4: Distance between surround back speaker and listening position
L5: Distance between subwoofer and listening position

DENON AVR-684 - Preparations: - 1

CAUTION:

※ Please note that the difference for every speaker should be 15 ft or less.

NOTE:

  • No setting when "None" has been selected for the Speaker Configuration setting.

1

DENON AVR-684 - 1 - 1

DENON AVR-684 - 1 - 2

Use the (left) and (right) buttons to set the distance from the front L speaker to the listening position.

8 FRONT L 12ft

DENON AVR-684 - 1 - 3

  • The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance.

Press the ENTER or (down) button to switch to the front R speaker setting.

2

DENON AVR-684 - 2 - 1

DENON AVR-684 - 2 - 2

Use the (left) and (right) buttons to set the distance from the front R speaker to the listening position.

9 FRONT R 12ft

DENON AVR-684 - 2 - 3

  • The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance.

Press the ENTER or (down) button to switch to the center speaker setting.

3

DENON AVR-684 - 3 - 1

DENON AVR-684 - 3 - 2

Use the (left) and (right) buttons to set the distance from the center speaker to the listening position.

10CENTER 12ft

DENON AVR-684 - 3 - 3

  • The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance.

Press the ENTER or (down) button to switch to the surround L speakers setting.

4CH SELECT ENTERUse the (left) and (right) buttons to set the distance from the surround L speakers to the listening position. 11 SURR.L 10ft The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance. Press the ENTER or (down) button to switch to the surround R speaker setting.
5CH SELECT ENTERUse the (left) and (right) buttons to set the distance from the surround R speakers to the listening position. 12 SURR.R 10ft The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance. Press the ENTER or (down) button to switch to the surround back speaker setting.
6CH SELECT ENTERUse the (left) and (right) buttons to set the distance from the surround back speakers to the listening position. 13 S.BACK 10ft The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance. Press the ENTER or (down) button to switch to the subwoofer setting.
7CH SELECT ENTERUse the (left) and (right) buttons to set the distance from the subwoofer to the listening position. 14 SW 12ft The number changes in units of 1 foot each time one of the buttons is pressed. Select the value closest to the measured distance. Press the ENTER or (down) button to enter the setting and switch the Test Tone setting.

Setting the Test Tone

  • Use this setting to adjust to that the playback level between the different channel is equal.
  • From the listening position, listen to the test tones produced from the speakers to adjust the level.
  • The level can also be adjusted directly from the remote control unit. (For details, see page 37.)

DENON AVR-684 - Setting the Test Tone - 1

  • Use the ( & & (left) ) button to switch the Test Tone mode.
  • Press the ENTER or (down) button to switch to the DIGITAL input (COAX) setting.

15 T.TONE YES

Use the (left) and (right) buttons to select the Test Tone mode.

DENON AVR-684 - Setting the Test Tone - 2

DENON AVR-684 - Setting the Test Tone - 3

Press the (down) button to start Test Tone.

  • Auto: Adjust the level while listening to the test tones produced automatically from the different speakers.
  • Manual: Select the speaker from which you want to produce the test tone to adjust the level.

3 Use the (left) and right) buttons to set the front L channel level.

DENON AVR-684 - Setting the Test Tone - 4

DENON AVR-684 - Setting the Test Tone - 5

Press the (down) button to switch to the center channel level (manual mode).

4 Use the (left) and (right) buttons to set the center channel level.

DENON AVR-684 - Setting the Test Tone - 6

DENON AVR-684 - Setting the Test Tone - 7

Press the (down) button to switch to the front R channel level (manual mode).

Use the (left) and (right) buttons to set the front R channel level.

DENON AVR-684 - Setting the Test Tone - 8

DENON AVR-684 - Setting the Test Tone - 9

Press the (down) button to switch to the surround R channel level (manual mode).

6Use the (left) and (right) buttons to set the surround R channel level. AUTO-SR (Initial) -12dB 0dB +12dB (left) button (right) button
7Press the (down) button to switch to the surround back channel level (manual mode).
8Use the (left) and (right) buttons to set the surround back channel level. AUTO-SB (Initial) -12dB 0dB +12dB (left) button (right) button
Press the (down) button to switch to the surround L channel level (manual mode).
9Use the (left) and (right) buttons to set the surround L channel level. AUTO-SL (Initial) -12dB 0dB +12dB (left) button (right) button
Press the (down) button to switch to the subwoofer channel level (manual mode).
10Use the (left) and (right) buttons to set the subwoofer channel level. AUTO-SW (Initial) -12dB 0dB +12dB (left) button (right) button
Press the ENTER button to finish the Test Tone.

Setting the Digital In assignment

Input the type of components connected to the digital input terminals.

1

DENON AVR-684 - Setting the Digital In assignment - 1

DENON AVR-684 - Setting the Digital In assignment - 2

Use the (left) and (right) buttons to assign the input function connected to the COAXIAL input (COAXIAL) terminal.

(Initial)

16 COAX CD

DENON AVR-684 - Setting the Digital In assignment - 3

(left) button (right) button

DENON AVR-684 - Setting the Digital In assignment - 4

  • Select "OFF" if nothing is connected.

Press the ENTER or (down) button to switch the optical input 1 (OPT1) setting.

2

DENON AVR-684 - Setting the Digital In assignment - 5

DENON AVR-684 - Setting the Digital In assignment - 6

Use the (left) and (right) buttons to assign the input function connected to the OPTICAL input 1 (OPTICAL 1) terminal.

17 OPT1 DUD

(Initial)

DENON AVR-684 - Setting the Digital In assignment - 7

(left) button (right) button

DENON AVR-684 - Setting the Digital In assignment - 8

  • Select "OFF" if nothing is connected.

Press the ENTER or (down) button to switch the optical input 2 (OPT2) setting.

3

DENON AVR-684 - Setting the Digital In assignment - 9

DENON AVR-684 - Setting the Digital In assignment - 10

Use the (left) and (right) buttons to assign the input function connected to the OPTICAL input 2 (OPTICAL 2) terminal.

18 OPT2 TU

DENON AVR-684 - Setting the Digital In assignment - 11

(left) button (right) button

DENON AVR-684 - Setting the Digital In assignment - 12

  • Select "OFF" if nothing is connected.

Press the ENTER or (down) button to switch the auto surround mode setting.

NOTE:

TUNER, V. AUX cannot be selected.

Setting the Auto Surround Mode

For the three kinds of input signals as shown below, the surround mode played the last is stored in the memory. At next time it the same signal inputs, the memorized surround mode is automatically selected and the signal is played.

Note that the surround mode setting is also stored separately for the different input function.

SIGNALDefault Auto Surround Mode
Analog and PCM 2-channel signalsSTEREO
2-channel signals of Dolby Digital, DTS or other multichannel formatDolby PLII Cinema
Multichannel signals of Dolby Digital, DTS or other multichannel formatDolby or DTS Surround

1

DENON AVR-684 - 1 - 1

DENON AVR-684 - 1 - 2

DENON AVR-684 - 1 - 3

DENON AVR-684 - 1 - 4

Use the (left) and (right) buttons to select the Auto Surround mode.

DENON AVR-684 - 1 - 5

DENON AVR-684 - 1 - 6

Press the ENTER or (down) button to switch the Ext. In SW Level setting.

Setting the Ext. In SW Level

Set the method of playback of the analog input signal connected to the Ext. In terminal.

1

DENON AVR-684 - 1 - 1

DENON AVR-684 - 1 - 2

DENON AVR-684 - 1 - 3

DENON AVR-684 - 1 - 4

Use the (left) and (right) buttons to select the Ext. In Subwoofer channel Level playback.

DENON AVR-684 - 1 - 5

DENON AVR-684 - 1 - 6
(left) button
(right) button

Press the ENTER or (down) button if you want to start the settings over from the beginning.

After setting up the system

1

DENON AVR-684 - 1 - 1

Press the SYSTEM SETUP button to finish system set up.

This completes the system setup operations. Once the system is set up, there is no need to make the settings again unless other components or speakers are connected to or the speaker layout is changed.

11 REMOTE CONTROL UNIT

Operating DENON audio components

  • Turn on the power of the different components before operating them.

1 Set mode switch 1 to "AUDIO".

DENON AVR-684 - Operating DENON audio components - 1

2 Set mode switch 2 to the position for the component to be operated. (CD, CDR/MD or Tape deck)

DENON AVR-684 - Operating DENON audio components - 2

DENON AVR-684 - Operating DENON audio components - 3

Operate the audio component.

  • For details, refer to the component's operating instructions.
    ※ While this remote control is compatible with a wide range of infrared controlled components, some models of components may not be operated with this remote control.

DENON AVR-684 - Operating DENON audio components - 4
1. CD player (CD) and CD recorder and MD recorder (CDR/MD) system buttons

DENON AVR-684 - Operating DENON audio components - 5
2. Tape deck (TAPE) system buttons

:Rewind
Fast-forward
: Stop
Forward play
: Reverse play
A/B : Switch between decks A and B

DENON AVR-684 - Operating DENON audio components - 6
3. Tuner system buttons

SHIFT : Switch preset channel range

CHANNEL : Preset channel

+,- up/down

TUNING : Frequency

+,- up/down

BAND : Switch between the AM and FM bands

MODE : Switch between auto and mono

MEMORY : Preset memory

NOTE:

  • TUNER can be operated when the switch is at "AUDIO" position.

Preset memory

DENON and other makes of components can be operated by setting the preset memory.

This remote control unit can be used to operate components of other manufacturers without using the learning function by registering the manufacturer of the component as shown on the List of Preset Codes (pages 122~126).

Operation is not possible for some models.

1 Set mode switch 1 to "AUDIO" or "VIDEO".

DENON AVR-684 - Preset memory - 1

Set the AUDIO side for the CD, Tape deck or CDR/MD position, to the VIDEO side for the DVD/VDP, DBS/CABLE, VCR or TV position.

2 Set mode switch 2 to the component to be registered.

DENON AVR-684 - Preset memory - 2

Press the ON/SOURCE button and the OFF button at the same time.

DENON AVR-684 - Preset memory - 3

DENON AVR-684 - Preset memory - 4

  • Indicator flash.

4 ① ② ③ Referring to the included List of Preset Codes, use the number ④ ⑤ ⑥ ⑧ ⑨ ⑩ ⑪ ⑫ ⑬ ⑭ ⑮ ⑯ ⑰ ⑱ ⑲ ⑳ ⑴ ⑵ ⑶ ⑷ ⑸ ⑹ ⑺ ⑻ ⑼ ⑽ ⑾ ⑿ ⑺ ⑻ ⑽ ⑾ ⑿ ⑺ ⑻ ⑽ ⑾ ⑿ ⑺ ⑻ ⑽ ⑾ ⑿ ⑺ ⑻ ⑽ ⑾ ⑿ ⑺ ⑻ ⑽ ⑾ ⑿ ⑺ ⑻ ⑽ ⑾ ⑿ ⑺ 7 8 9 10

5 To store the codes of another component in the memory, repeat steps 1 to 4.

DENON AVR-684 - Preset memory - 5

NOTES:

  • The signals for the pressed buttons are emitted while setting the preset memory. To avoid accidental operation, cover the remote control unit's transmitting window while setting the preset memory.
  • Depending on the model and year of manufacture, this function cannot be used for some models, even if they are of makes listed on the included list of preset codes.
  • Some manufacturers use more than one type of remote control code. Refer to the included list of preset codes to change the number and check.
  • The preset memory can be set for one component only among the following: CDR/MD, DVD/VDP and DBS/CABLE.

The preset codes are as follows upon shipment from the factory and after resetting:

TV, VCR. HITACHI

CD, TAPE . DENON

CDR/MD . DENON (CDR)

DVD/VDP . DENON (DVD)

DBS/CABLE ABC (CABLE)

Operating component stored in the preset memory

1 Set mode switch 1 to "AUDIO" or "VIDEO".

DENON AVR-684 - Set mode switch 1 to "AUDIO" or "VIDEO". - 1

DENON AVR-684 - Set mode switch 1 to "AUDIO" or "VIDEO". - 2
VIDEO

DENON AVR-684 - Set mode switch 1 to "AUDIO" or "VIDEO". - 3

Set the AUDIO side for the CD, tape deck or CDR/MD position, to the VIDEO side for the DVD/VDP, DBS/CABLE, VCR or TV position.

2 Set mode switch 2 to the component you want to operate.

DENON AVR-684 - Set mode switch 2 to the component you want to operate. - 1

DENON AVR-684 - Set mode switch 2 to the component you want to operate. - 2

Operate the component.

  • For details, refer to the component's operating instructions.
    ※ Some models cannot be operated with this remote control unit.

1. Digital video disc player (DVD, DVD SETUP) system buttons

POWER : Power on/standby

(ON/SOURCE)

OFF : DENON DVD power off
←▶→ : Manual search (forward and reverse)

:Stop
Play

Auto search (to beginning of track)

:Pause

0~9,+10:10key skip ^+ :Discskip (forDVDchanger only)

DISPLAY : Switch display

MENU : Menu

RETURN : Return

SETUP : Setup

, , , : Cursor up, down, left and right

ENTER : Enter setting

NOTE:

  • Some manufacturers use different names for the DVD remote control buttons, so also refer to the instructions on remote control for that component.

DENON AVR-684 - NOTE: - 1

2. Video disc player (VDP) system buttons

POWER :Power on/standby

(ON/SOURCE)

DENON AVR-684 - Video disc player (VDP) system buttons - 1

: Manual search
forward and reverse)
:Stop
:Play

DENON AVR-684 - Video disc player (VDP) system buttons - 2

: Auto search (cue)
:Pause

0~9, +10 : 10 key

DENON AVR-684 - Video disc player (VDP) system buttons - 3

3. Video deck (VCR) system buttons

POWER : Power on/standby

(ON/SOURCE)

DENON AVR-684 - Video deck (VCR) system buttons - 1

: Manual search

(forward and reverse)

:Stop

Play

:Pause

Channel + -Channels

DENON AVR-684 - Video deck (VCR) system buttons - 2

4. Digital broadcast satellite (DBS) tuner and cable (CABLE) system buttons

POWER : Power on/standby

(ON/SOURCE)

MENU : Menu

RETURN : Return

, , , :Cursorup,down,left

and right

ENTER : Enter

CHANNEL : Switch channels

+,一

0~9, +10 : Channels

DISPLAY : Switch display

VOL +,- :Volumeup/down

DENON AVR-684 - Digital broadcast satellite (DBS) tuner and cable (CABLE) system buttons - 1

5. Monitor TV (TV) system buttons

POWER :Power on/standby

(ON/SOURCE)

MENU : Menu

RETURN : Return

DENON AVR-684 - Monitor TV (TV) system buttons - 1

Cursor up, down, left and right

ENTER : Enter

CHANNEL : Switch channels

+,一

0~9, +10 : Channels

DISPLAY : Switch display

TV/VCR : Switch between TV

and video player

TV VOL : Volume up/down

+,一

DENON AVR-684 - Monitor TV (TV) system buttons - 2

NOTES:

  • For this CD, CDR, MD and TAPE components, buttons can be operated in the same way as for Denon audio components (page 27).
  • The TV can be operated when the switch is at DVD/VDP, VCR, TV position.

Punch Through

  • "Punch Through" is a function allowing you to operate the PLAY, STOP, MANUAL SEARCH and AUTO SEARCH buttons on the CD, TAPE, CDR/MD, DVD/VDP or VCR components when in the DBS/CABLE or TV mode. By default, nothing is set.

1 Set mode switch 1 to "VIDEO".

DENON AVR-684 - Punch Through - 1

2 Set mode switch 2 to the component to be registered (DBS/CABLE or TV).

DENON AVR-684 - Punch Through - 2

Press the DVD/VDP power button and the TV power button at the same time.

DENON AVR-684 - Punch Through - 3

Indicator flash.

DENON AVR-684 - Punch Through - 4

4 ① ② ③ Input the number of the component you want to set. (See Table 1)

4

(5)

8 0

6

9

Table 1

No.
CD1
TAPE2
CDR/MD3
DVD/VDP4
VCR5
No setting0

DENON AVR-684 - Punch Through - 5

12 OPERATION

Before operating

DENON AVR-684 - Before operating - 1

DENON AVR-684 - Before operating - 2

Preparations:

Check that all connections are proper.

1 Turn on the power.

Press the ON/STANDBY button on the main unit or ON/SOURCE button on the remote control unit to turn on the power.

DENON AVR-684 - Preparations: - 1
(Main unit)

DENON AVR-684 - Preparations: - 2
(Remote control unit)

  • ON/STANDBY

When the button is pressed, the power turns on and the display lights after approximately 1 second.

When pressed again, the power turns off, the standby mode is set and the display turns off.

Several seconds are required from the time the power operation switch is set to the "ON" position until sound is output. This is due to the built-in mating circuit that prevents noise when the power switch is turned on and off.

2 Select the front speakers.

Press the SPEAKER A or B button to turn the speaker on.

DENON AVR-684 - Preparations: - 3
(Main unit)

DENON AVR-684 - Preparations: - 4
(Remote control unit)

  • The front speaker A, B setting can be also changed with the SPEAKER button on the remote control unit.

Playing the input source

DENON AVR-684 - Playing the input source - 1

1 Select the input source to be played. Example: CD

DENON AVR-684 - Select the input source to be played. Example: CD - 1

DENON AVR-684 - Select the input source to be played. Example: CD - 2

2 Select the input mode.

  • Selecting the analog mode

Press the ANALOG button to switch to the analog input.

DENON AVR-684 - Select the input mode. - 1

DENON AVR-684 - Select the input mode. - 2

  • Selecting the external input (EXT. IN) mode
  • Press the EXT. IN (or the EXT. IN button on the remote control unit) to switch the external input.

DENON AVR-684 - Select the input mode. - 3

DENON AVR-684 - Select the input mode. - 4

  • Selecting the AUTO, PCM and DTS modes
  • The mode switches as shown below each time the INPUT MODE button is pressed.

DENON AVR-684 - Select the input mode. - 5

DENON AVR-684 - Select the input mode. - 6

Input mode selection function

Different input modes can be selected for the different input sources. The selected input modes for the separate input sources are stored in the memory.

① AUTO (All auto mode)

In this mode, the types of signals being input to the digital and analog input jacks for the selected input source are detected and the program in the this unit's surround decoder is selected automatically upon playback. This mode can be selected for all input sources other than TUNER.

The presence or absence of digital signals is detected, the signals input to the digital input jacks are identified and decoding and playback are performed automatically in DTS, Dolby Digital or PCM (2 channel stereo) format. If no digital signal is being input, the analog input jacks are selected.

Use this mode to play Dolby Digital signals.

② PCM (exclusive PCM signal playback mode)

Decoding and playback are only performed when PCM signals are being input.

Note that noise may be generated when using this mode to play signals other than PCM signals.

③ DTS (exclusive DTS signal playback mode)

Decoding and playback are only performed when DTS signals are being input.

(4) ANALOG (exclusive analog audio signal playback mode)

The signals input to the analog input jacks are decoded and played.

⑤ EXT. IN (external decoder input jack selection mode)

The signals being input to the external decoder input jacks are played without passing through the surround circuitry.

NOTE:

  • Note that noise will be output when CDs or LDs recorded in DTS format are played in the "PCM" (exclusive PCM signal playback) or "ANALOG" (exclusive analog audio signal playback) mode. Select the AUTO or DTS (exclusive DTS signal playback) mode when playing signals recorded in DTS from a laser disc player.

Notes on playing a source encoded with DTS

  • Noise may be generated at the beginning of playback and while searching during DTS playback in the AUTO mode. If so, play in the DTS mode.
  • In some rare cases the noise may be generated when you preform the operation to stop playback of a DTS-CD or DTS-LD.

Select the play mode.

Press the SURROUND MODE button, then turn the SELECT knob.

DENON AVR-684 - Select the play mode. - 1
Example: Stereo

DENON AVR-684 - Select the play mode. - 2
(Main unit)

DENON AVR-684 - Select the play mode. - 3
(Remote control unit)

※ To select the surround mode while adjusting the surround parameters, tone defeat or tone control, press the surround mode button then operate the selector.

DENON AVR-684 - Select the play mode. - 4
SURROUND MODE
(Main unit)

Start playback on the selected component.

  • For operating instructions, refer to the component's manual.

Adjust the volume.

DENON AVR-684 - Adjust the volume. - 1
The volume level is displayed on the master volume level display.

DENON AVR-684 - Adjust the volume. - 2
(Main unit)

DENON AVR-684 - Adjust the volume. - 3
(Remote control unit)

The volume can be adjusted within the range of -70 to 0 to 18dB in steps of 1 dB. However, when the channel level is set as described on page 37, if the volume for any channel is set at +1dB or greater, the volume cannot be adjusted up to 18dB . (In this case the maximum volume is adjusted to "18 dB — (Maximum value of channel level)".

Input mode when playing DTS sources

  • Noise will be output if DTS-compatible CDs or LDs are played in the "ANALOG" or "PCM" mode.

When playing DTS-compatible sources, be sure to connect the source component to the digital input jacks (OPTICAL/COAXIAL) and set the input mode to "DTS".

Input mode display

  • In the AUTO mode

DENON AVR-684 - Input mode display - 1

  • In the DIGITAL PCM mode

DENON AVR-684 - Input mode display - 2

  • In the DIGITAL DTS mode

DENON AVR-684 - Input mode display - 3

  • In the ANALOG mode

DENON AVR-684 - Input mode display - 4

One of these lights, depending on the input signal.

DENON AVR-684 - Input mode display - 5

DENON AVR-684 - Input mode display - 6

DENON AVR-684 - Input mode display - 7

DENON AVR-684 - Input mode display - 8

Input signal display

DOLBY DIGITAL

DENON AVR-684 - Input signal display - 1

DTS

DENON AVR-684 - Input signal display - 2

  • PCM

DENON AVR-684 - Input signal display - 3

The DIGITAL indicator lights when digital signals are being input properly. If the DIGITAL indicator does not light, check whether the digital input component setup (page 25) and connections are correct and whether the component's power is turned on.

NOTE:

  • The DIGITAL indicator will light when playing CD-ROMs containing data other than audio signals, but no sound will be heard.

After starting playback

[1] Adjusting the sound quality (tone)

The tone switches as follows each time the TONE CONTROL button is pressed.

DENON AVR-684 - The tone switches as follows each time the TONE CONTROL button is pressed. - 1
TONE CONTROL
(Main unit)

DENON AVR-684 - The tone switches as follows each time the TONE CONTROL button is pressed. - 2

2 With the name of the volume to be adjusted selected, turn the SELECT knob to adjust the level.

DENON AVR-684 - With the name of the volume to be adjusted selected, turn the SELECT knob to adjust the level. - 1
(Main unit)

  • To increase the bass or treble: Turn the control clockwise. (The bass or treble sound can be increased to up to +12 dB in steps of 2 dB.)
  • To decrease the bass or treble: Turn the control counterclockwise. (The bass or treble sound can be decreased to up to -12dB in steps of 2dB .)

DENON AVR-684 - With the name of the volume to be adjusted selected, turn the SELECT knob to adjust the level. - 2

3 If you do not want the bass and treble to be adjusted, turn on the tone defeat mode.

DENON AVR-684 - If you do not want the bass and treble to be adjusted, turn on the tone defeat mode. - 1
(Main unit)

※ The signals do not pass through the bass and treble adjustment circuits, so it provides higher quality sound.

[2] Listening over headphones

Plug the headphones' plug into the jack.

※ Connect the headphones to the PHONES jack. The speaker output is automatically turned off when headphones are connected.

DENON AVR-684 - [2] Listening over headphones - 1

[3] Turning the sound off temporarily (muting)

1 Use this to turn off the audio output temporarily. Press the MUTING button.

DENON AVR-684 - [3] Turning the sound off temporarily (muting) - 1

※ Cancelling MUTING mode.

  • Press the MUTING button again.
  • Muting will also be cancelled when MASTER VOL is adjusted up or down.

[4] Combining the currently playing sound with the desired image

1 Simulcast playback Use this switch to monitor a video source other than the audio source. Press the VIDEO SELECT button repeatedly until the desired source appears on the display.

DENON AVR-684 - [4] Combining the currently playing sound with the desired image - 1
VIDEO SELECT
(Main unit)

DENON AVR-684 - [4] Combining the currently playing sound with the desired image - 2
(Remote control unit)

Cancelling simulcast playback.

  • Select "SOURCE" using the video select button.
  • Switch the program source to the component connected to the video input jacks.

[5] Checking the currently playing program source, etc.

1 Front panel display

  • Descriptions of the unit's operations are also displayed on the front panel display. In addition, the display can be switched to check the unit's operating status while playing a source by pressing the STATUS button.

DENON AVR-684 - [5] Checking the currently playing program source, etc. - 1
STATUS
(Main unit)

DENON AVR-684 - [5] Checking the currently playing program source, etc. - 2
STATUS
(Remote control unit)

Using the dimmer function. Use this to change the brightness of the display. The display brightness changes in four steps (bright, medium, dim and off) by pressing the main unit's DIMMER button repeatedly.

DENON AVR-684 - [5] Checking the currently playing program source, etc. - 3
DIMMER
(Main unit)

DENON AVR-684 - [5] Checking the currently playing program source, etc. - 4
DIMMER
(Remote control unit)

DENON AVR-684 - [5] Checking the currently playing program source, etc. - 5

NOTE:

To prevent hearing loss, do not raise the volume level excessively when using headphones.

DENON AVR-684 - NOTE: - 1

DENON AVR-684 - NOTE: - 2

DENON AVR-684 - NOTE: - 3

DENON AVR-684 - NOTE: - 4

Playback using the external input (EXT. IN) jacks

1 Set the external input (EXT. IN) mode. Press the EXT. IN to switch the external input.

DENON AVR-684 - Playback using the external input (EXT. IN) jacks - 1
EXT.IN
(Main unit)

DENON AVR-684 - Playback using the external input (EXT. IN) jacks - 2
(Remote control unit)

Once this is selected, the input signals connected to the FL (front left), FR (front right), C (center), SL (surround left), and SR (surround right) channels of the EXT. IN jacks are output directly to the front (left and right), center, surround (left and right) speaker systems without passing through the surround circuitry.

In addition, the signal input to the SW (subwoofer) jack is output to the PRE OUT SUBWOOFER jack.

Cancelling the external input mode

To cancel the external input (EXT. IN) setting, press the INPUT MODE (AUTO, PCM, DTS) or ANALOG button to switch to the desired input mode. (See page 33.)

DENON AVR-684 - Cancelling the external input mode - 1
INPUT MODE
(Main unit)

DENON AVR-684 - Cancelling the external input mode - 2
ANALOG

DENON AVR-684 - Cancelling the external input mode - 3
(Remote control unit)

DENON AVR-684 - Cancelling the external input mode - 4

  • When the input mode is set to the external input (EXT. IN), the play mode (DIRECT, STEREO, DOLBY/DTS SURROUND, 5/6CH STEREO or DSP SIMULATION) cannot be selected.

DENON AVR-684 - Cancelling the external input mode - 5

DENON AVR-684 - Cancelling the external input mode - 6

NOTES:

  • In play modes other than the external input mode, the signals connected to EXT. IN jacks cannot be played. In addition, signals cannot be output from channels not connected to the input jacks.
  • The external input mode can be set for any input source. To watch video while listening to sound, select the input source to which the video signal is connected, then set this mode.
  • If the subwoofer output level seems to high, set the "SW ATT." surround parameter to "ON".

Recording the program source (recording the source currently being monitored)

1 Follow step 1 to 3 under "Playing the input source".

2 Start recording on the tape or video deck. For instructions, refer to the component's operating instructions.

Simultaneous recording

The signals of the source selected with the function selector button are output simultaneously to the CDR/TAPE and VCR REC OUT jacks. If a total of two tape and/or video decks are connected and set to the recording mode, the same source can be recorded simultaneously on every decks.

NOTE:

  • The AUDIO IN's signal selected with the input selector knob are output to the CDR/TAPE and VCR AUDIO OUT jacks.

13 SURROUND

Before playing with the surround function

  • Before playing with the surround function, be sure to use the test tones to adjust the playback level from each speakers. This adjustment can be performed from the remote control unit, as (described) below.
  • The adjustment with the test tones is only effective in the DOLBY/DTS SURROUND modes.
    The adjusted playback levels for the different surround modes are automatically stored in the memory of each surround modes.

1 Set the DOLBY/DTS SURROUND (Dolby Pro Logic II or Dolby Digital or DTS) modes.

DOLBY / DTS SURROUND

DENON AVR-684 - Before playing with the surround function - 1
(Main unit)

DENON AVR-684 - Before playing with the surround function - 2
(Remote control unit)

Press the TEST TONE button.

Test tones are output from the different speakers. Use the channel volume adjust buttons to adjust so that the volume of the test tones is the same for all the speakers.

DENON AVR-684 - Before playing with the surround function - 3
(Remote control unit)

DENON AVR-684 - Before playing with the surround function - 4

DENON AVR-684 - Before playing with the surround function - 5
(Remote control unit)

NOTE: Please make sure the "AUDIO" position of the slide switch on the remote control unit.

After completing the adjustment, press the TEST TONE button again.

DENON AVR-684 - Before playing with the surround function - 6
(Remotecnol unit)

DENON AVR-684 - Before playing with the surround function - 7

DENON AVR-684 - Before playing with the surround function - 8

After adjusting using the test tones, adjust the channel levels either according to the playback sources or to suit your tastes, as (described) below.

1 Select the speaker whose level you want to adjust.

DENON AVR-684 - Before playing with the surround function - 9
(Remote control unit)

The channel switches as shown below each time the button is pressed.

DENON AVR-684 - Before playing with the surround function - 10
(Remote control unit)

DENON AVR-684 - Before playing with the surround function - 11
NOTE: Please make sure the "AUDIO" position of the slide switch on the remote control unit.

3 Adjust the level of the selected speaker.

DENON AVR-684 - Before playing with the surround function - 12
(Remote control unit)

※ Default setting of channel level is 0 dB.
※ The level of the selected speaker can be adjusted within the range of +12 to -12 dB using cursor buttons.
※ SW channel level can be turned off by decreasing one step from -12 dB.

$$ O F F \leftrightarrow - 1 2 d B \leftrightarrow 1 2 d B $$

DENON AVR-684 - Before playing with the surround function - 13

Dolby Surround Pro Logic II mode

1 Select the function to which the component you want to play is connected.

Example: DVD

DENON AVR-684 - Dolby Surround Pro Logic II mode - 1
(Main unit)

DENON AVR-684 - Dolby Surround Pro Logic II mode - 2
(Remote control unit)

2 Select the Dolby Surround Pro Logic II mode.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 3
DOLBY / DTS
SURROUND
(Main unit)

DENON AVR-684 - Dolby Surround Pro Logic II mode - 4
(Remotecnrolunit)

  • The Dolby Pro Logic indicator lights.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 5
Display

DENON AVR-684 - Dolby Surround Pro Logic II mode - 6
Light
PROLOGIC II

PLI C DVD

2 Play a program source with the DOLEY SURROUND mark.

  • For operating instructions, refer to the manuals of the respective components.

4 Select the surround parameter mode.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 7
SURROUND
PARAMETER
(Main unit)

DENON AVR-684 - Dolby Surround Pro Logic II mode - 8
SURROUND
(Remote control unit)
Display
MODE ci nema

※ To perform this operation from the remote control unit, check that the mode selector switch is set to "AUDIO".

5 Select the optimum mode for the source.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 9
(Main unit)

DENON AVR-684 - Dolby Surround Pro Logic II mode - 10

DENON AVR-684 - Dolby Surround Pro Logic II mode - 11
(Remote control unit)

control unit)

DENON AVR-684 - Dolby Surround Pro Logic II mode - 12

DENON AVR-684 - Dolby Surround Pro Logic II mode - 13

DENON AVR-684 - Dolby Surround Pro Logic II mode - 14

DENON AVR-684 - Dolby Surround Pro Logic II mode - 15

DENON AVR-684 - Dolby Surround Pro Logic II mode - 16

6 Set the surround parameters according to the mode.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 17
SURROUND
PARAMETER
(Main unit)

DENON AVR-684 - Dolby Surround Pro Logic II mode - 18
SURROUND
(Remote control unit)

  • The mode switches as shown below each time the button is pressed.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 19

※ If you do want the bass and trable to be adjusted, turn off the tone defeat mode.

7 Set the various surround parameters. CINEMA EO setting

DENON AVR-684 - Dolby Surround Pro Logic II mode - 20

  • PANorama setting

DENON AVR-684 - Dolby Surround Pro Logic II mode - 21

  • DIMENSION setting

DENON AVR-684 - Dolby Surround Pro Logic II mode - 22

  • CENTER WIDTH setting

DENON AVR-684 - Dolby Surround Pro Logic II mode - 23

TONE DEFEAT setting

DENON AVR-684 - Dolby Surround Pro Logic II mode - 24

※ Select “Yes” to reset to the factory defaults.

Press the ENTER button to finish surround parameter mode.

DENON AVR-684 - Dolby Surround Pro Logic II mode - 25
(Remote control unit)

NOTE:

  • When making parameter settings, the display will return to the regular condition several seconds after the last button was pressed and the setting will be completed.

DTS NEO:6 mode

DENON AVR-684 - DTS NEO:6 mode - 1

1 Select the function to which the component you want to play is connected.

Example: DVD

DENON AVR-684 - DTS NEO:6 mode - 2
(Main unit)

DENON AVR-684 - DTS NEO:6 mode - 3
(Remote control unit)

DENON AVR-684 - DTS NEO:6 mode - 4

2 Select the DTS NEO:6 mode.

DENON AVR-684 - Select the DTS NEO:6 mode. - 1
DOLBY / DTS SURROUND
(Main unit)

DENON AVR-684 - Select the DTS NEO:6 mode. - 2
(Remotecnrolunit)

  • The mode switches as shown below each time the button is pressed.

DENON AVR-684 - Select the DTS NEO:6 mode. - 3

3 Play a program source.

4 Select the surround parameter mode.

SURROUND

DENON AVR-684 - Select the surround parameter mode. - 1
(Main unit)

SURROUND PARAMETER

DENON AVR-684 - Select the surround parameter mode. - 2
(Remote control unit)

Display

MODE cinema

※ To perform this operation from the remote control unit, check that the mode selector switch is set to "AUDIO".

5 Select the optimum mode for the source.

DENON AVR-684 - Select the optimum mode for the source. - 1
(Main unit)

DENON AVR-684 - Select the optimum mode for the source. - 2

DENON AVR-684 - Select the optimum mode for the source. - 3
(Remote control unit)

DENON AVR-684 - Select the optimum mode for the source. - 4

DENON AVR-684 - Select the optimum mode for the source. - 5

DENON AVR-684 - Select the optimum mode for the source. - 6

6 Set the surround parameters according to the mode.

SURROUND

DENON AVR-684 - Set the surround parameters according to the mode. - 1
(Main unit)

SURROUND

DENON AVR-684 - Set the surround parameters according to the mode. - 2
(Remote control unit)

  • The mode switches as shown below each time the button is pressed.

DENON AVR-684 - Set the surround parameters according to the mode. - 3

※ If you do want the bass and trable to be adjusted, turn off the tone defeat mode.

7 Set the various surround parameters. CINEMA EQ setting

CINEMA EQ setting

CINEMA EQ OFF

ON

or

or

  • CENTER IMAGE setting

C. IMAGE 0.2

0.0

0.2


or

or

TONE DEFEAT setting

TONEDEF. ON

ON

or

F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F F

or

※ Select “Yes” to reset to the factory defaults.

Press the ENTER button to finish surround parameter mode.

DENON AVR-684 - Press the ENTER button to finish surround parameter mode. - 1
(Remote control unit)

IDE CINEMA

CINEMA EQ

TONE DEFEAT

SURROUND BACK

DEFAULT

MODE MUSIC

CENTER IMAGE

TONE DEFEAT

SURROUND BACK

DEFAULT

Surround parameters ①

Pro Logic II Mode:

  • The Cinema mode is for use with stereo television shows and all programs encoded Dolby Surround.
  • The Music mode is recommended as the standard mode for autosound music systems (no video), and is optional for A/V systems.
  • The Pro Logic mode offers the same robust surround processing as original Pro Logic in case the source contents is not of optimum quality. Select one of the modes ("cinema", "music" or "Pro Logic").

Panorama Control:

This mode extends the front stereo image to include the surround speakers for an exciting "wraparound" effect with side wall imaging. Select "OFF" or "ON".

Dimension Control:

This control gradually adjust the soundfield either towards the front or towards the rear.

The control can be set in 7 steps from 0 to 6.

Center Width Control:

This control adjust the center image so it may be heard only from the center speaker; only from the left/right speakers as a phantom image; or from all three front speakers to varying degrees.

The control can be set in 8 steps from 0 to 7.

DTS NEO:6 Mode:

Cinema

This mode is optimum for playing movies. Decoding is performed with emphasis on separation performance to achieve the same atmosphere with 2-channel sources as with 6.1-channel sources.

This mode is effective for playing sources recorded in conventional surround formats as well, because the in-phase component is assigned mainly to the center channel (C) and the reversed phase component to the surround (SL, SR and SB channels).

Music

This mode is suited mainly for playing music. The front channel (FL and FR) signals bypass the decoder and are played directly so there is no loss of sound quality, and the effect of the surround signals output from the center (C) and surround (SL, SR and SB) channels add a natural sense of expansion to the sound field.

CENTER IMAGE (0.0 to 0.5: default 0.2):

The center image parameter for adjusting the expansion of the center channel in the DTS NEO:6 MUSIC mode has been added.

Dolby Digital mode (only with digital input) and DTS Surround (only with digital input)

1 Select the input source.

Playback with a digital input

① Select an input source set to digital (COAXIAL/OPTICAL) (see page 25).

Example: DVD

DENON AVR-684 - Example: DVD - 1
(Main unit)

DENON AVR-684 - Example: DVD - 2
(Remote control unit)

② Set the input mode to "AUTO" or DTS.

DENON AVR-684 - Example: DVD - 3
INPUT MODE
(Main unit)

DENON AVR-684 - Example: DVD - 4
(Remote control unit)

2 Select the Dolby/DTS Surround mode.

DENON AVR-684 - Select the Dolby/DTS Surround mode. - 1
DOLBY / DTS
SURROUND
(Main unit)

DENON AVR-684 - Select the Dolby/DTS Surround mode. - 2
(Remote control unit)

3 Play a program source with the DOLBY, mark.

DENON AVR-684 - Play a program source with the DOLBY, mark. - 1

  • The Dolby Digital indicator lights when playing Dolby Digital sources.

DENON AVR-684 - Play a program source with the DOLBY, mark. - 2

  • The DTS indicator lights when playing DTS sources.

Operate the SURROUND BACK button to switch Surround Back CH ON/OFF.

DENON AVR-684 - Play a program source with the DOLBY, mark. - 3
(Remote control unit)

DENON AVR-684 - Play a program source with the DOLBY, mark. - 4
OUTPUT
SUBROUND
BACK

  • Lights when the Surround Back CH is on.

4 Set the surround parameter according to the source. First, press the SURROUND PARAMETER button.

DENON AVR-684 - Set the surround parameter according to the source. First, press the SURROUND PARAMETER button. - 1
SURROUND
(Remote control unit)

NOTE:

Please make sure the "AUDIO" position of the slide switch on the remote control unit.

DENON AVR-684 - NOTE: - 1

DENON AVR-684 - NOTE: - 2

5

DENON AVR-684 - 5 - 1

DENON AVR-684 - 5 - 2
(Remote control unit)

Use the (left) and (right) buttons to set the CINEMA EQ.

CINEMA EQ OFF

ON

(Initial)

DENON AVR-684 - CINEMA EQ OFF - 1
(left) button

OFF

DENON AVR-684 - CINEMA EQ OFF - 2
(right) button

SURROUND PARAMETER

DENON AVR-684 - CINEMA EQ OFF - 3
(Remote control unit)

Press the SURROUND PARAMETER or (down) button to switch to the D. COMP. setting.

6

DENON AVR-684 - 6 - 1
(Remote control unit)

Use the (left) and (right) buttons to set the D. COMP.

D.COMP. OFF

(Initial)

1

LOW

MID

HIGH

DENON AVR-684 - 6 - 2
(left) button

DENON AVR-684 - 6 - 3
(right) button

SURROUND PARAMETER

DENON AVR-684 - 6 - 4
(Remote control unit)

Press the SURROUND PARAMETER or (down) button to switch to the LFE setting.

NOTE:

This parameter is not displayed during DTS playback.

7

DENON AVR-684 - 7 - 1

DENON AVR-684 - 7 - 2
(Remote control unit)

control unit)

Use the (left) and (right) buttons to set the LFE level.

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1

(Initial)

-10dB

-5dB

DENON AVR-684 - 7 - 1
button
(right) button

SURROUND PARAMETER

DENON AVR-684 - 7 - 2
(Remote control unit)

  • The level can be adjusted in units of 1 dB from -10 to 0 dB.

Set to the desired level according to the speaker systems being used and the source to be played.

Press the SURROUND PARAMETER or (down) button to switch to the TONE DEFEAT setting.

8

DENON AVR-684 - 8 - 1

DENON AVR-684 - 8 - 2
(Remote control unit)

control unit)

Use the (left) and (right) buttons to set the TONE DEFEAT.

TNT

(Initial)

CH

DENON AVR-684 - 8 - 3
(left) button

OFF

DENON AVR-684 - 8 - 4
(right) button

SURROUND PARAMETER

DENON AVR-684 - 8 - 5
(Remote control unit)

Press the SURROUND PARAMETER or (down) button to switch to the SURROUND BACK SPEAKER setting.

9

DENON AVR-684 - 9 - 1

DENON AVR-684 - 9 - 2
(Remote control unit)

control unit)

Use the (left) and (right) buttons to set the SURROUND BACK SPEAKER.

SB:ON

(Initial)

1

DENON AVR-684 - 9 - 1
(right) button

SURROUND PARAMETER

DENON AVR-684 - 9 - 2
(Remotecnrolunit)

Press the SURROUND PARAMETER or (down) button to switch to the default setting.

DENON AVR-684 - 9 - 3
10
(Remote control unit)

To reset the settings to the factory defaults, use the (left) and (right) buttons to display "Yes".

DEFAULT

DENON AVR-684 - 9 - 4
(left) button (right) button

DENON AVR-684 - 9 - 5
(Remote control unit)

Press the SURROUND PARAMETER or (down) button to switch to the CINEMA EQ. setting.

DENON AVR-684 - 9 - 6
11
(Remote control unit)

Press the ENTER button to finish surround parameter mode.

Dialogue Normalization

The dialogue normalization function is activated automatically when playing Dolby Digital program sources.

Dialogue normalization is a basic function of Dolby Digital which automatically normalizes the dialog level (standard level) of the signals which are recorded at different levels for different program sources, such as DVD, DTV and other future formats that will use Dolby Digital.

These contents can be verified with the STATUS button.

Display

OFFSET 4dB

The number indicates the normalization level when the currently playing program is normalized to the standard level.

Surround parameters ②

CINEMA EQ. (Cinema Equalizer):

The Cinema EQ function gently decreases the level of the extreme high frequencies, compensating for overly-bright sounding motion picture soundtracks. Select this function if the sound from the front speakers is too bright.

This function only works in the Dolby Pro Logic II, Dolby Digital and DTS Surround modes. (The same contents are set for all operating modes.)

D.COMP. (Dynamic Range Compression):

Motion picture soundtracks have tremendous dynamic range (the contrast between very soft and very loud sounds). For listening late at night, or whenever the maximum sound level is lower than usual, the Dynamic Range Compression allows you to hear all of the sounds in the soundtrack (but with reduced dynamic range). (This only works when playing program sources recorded in Dolby Digital.) Select one of the four parameters ("OFF", "LOW", "MID" (middle) or "HI" (high)). Set to OFF for normal listening.

LFE (Low Frequency Effect):

This sets the level of the LFE (Low Frequency Effect) sounds included in the source when playing program sources recorded in Dolby Digital or DTS.

If the sound produced from the subwoofer sounds distorted due to the LFE signals when playing Dolby Digital or DTS sources when the peak limiter is turned off with the subwoofer peak limit level setting (system setup menu), adjust the level as necessary.

Program source and adjustment range:

  1. Dolby Digital: -10 dB to 0 dB
  2. DTS Surround: -10 dB to 0 dB

  3. When DTS encoded movie software is played, it is recommended that the LFE LEVEL be set to 0 dB for correct DTS playback.

  4. When DTS encoded music software is played, it is recommended that the LFE LEVEL be set to -10 dB for correct DTS playback.

SB CH OUT (Surround Back):

"OFF".Playback is conducted without using the surround back speaker.

"ON".......Playback is conducted using the surround back speaker.

NOTE: This operation can be performed directly using the "SURROUND BACK" button.

  • This unit is equipped with a high performance DSP (Digital Signal Processor) which uses digital signal processing to synthetically recreate the sound field. One of 7 preset surround modes can be selected according to the program source and the parameters can be adjusted according to the conditions in the listening room to achieve a more realistic, powerful sound. These surround modes can also be used for program sources not recorded in Dolby Surround Pro Logic or Dolby Digital.

Surround modes and their features

15CH/6CH STEREOIn this mode, the signals of the front left channel are output from the left surround channel, the signals of the front right channel are output from the right surround channel, and the same (in-phase) component of the left and right channels is output from the center channel. This mode provides all speaker surround sound, but without directional steering effects, and works with any stereo program source.
2MONO MOVIE (NOTE 1)Select this when watching monaural movies for a greater sense of expansion.
3ROCK ARENAUse this mode to achieve the feeling of a live concert in an arena with reflected sounds coming from all directions.
4JAZZ CLUBThis mode creates the sound field of a live house with a low ceiling and hard walls. This mode gives jazz a very vivid realism.
5VIDEO GAMEUse this to enjoy video game sources.
6MATRIXSelect this to emphasize the sense of expansion for music sources recorded in stereo. Signals consisting of the difference component of the input signals (the component that provides the sense of expansion) processed for delay are output from the surround channel.
7VIRTUALSelect this mode to enjoy a virtual sound field, produced from the front 2-channel speakers.

※ Depending on the program source being played, the effect may not be very noticeable. In this case, try other surround modes, without worrying about their names, to create a sound field suited to your tastes.
NOTE 1: When playing sources recorded in monaural, the sound will be one-sided if signals are only input to one channel (left or right), so input signals to both channels. If you have a source component with only one audio output (monophonic camcorder, etc.) obtain a "Y" adaptor cable to split the mono output to two outputs, and connect to the L and R inputs.

NOTE:

DIRECT, STEREO and 5CH/6CH STEREO mode can be used when playing PCM signals with a sampling frequency of 96kHz (such as from DVD-Video discs that contain 24 bit, 96kHz audio). If such signals are input during playback in the other surround modes, the mode automatically switches to STEREO.

Personal Memory Plus

This set is equipped with a personal memorize function that automatically memorizes the surround modes and input modes selected for the input different sources. When the input source is switched, the modes set for that source last time it was used are automatically recalled.

The surround parameters, tone control settings and playback level balance for the different output channels are memorized for each surround mode.

DSP surround simulation

  • To operate the surround mode and surround parameters from the remote control unit.

1 Select the surround mode for the input channel.

DENON AVR-684 - DSP surround simulation - 1
(Remote control unit)

The surround mode switches in the following order each time the DSP SIMULATION button is pressed:

DENON AVR-684 - DSP surround simulation - 2

DENON AVR-684 - DSP surround simulation - 3

2

DENON AVR-684 - 2 - 1
SURROUND PARAMETER
(Remote control unit)

To enter the surround parameter setting mode, press the SURROUND PARAMETER button. The surround parameter switches in the following order each time the SURROUND P pressed for the different surround modes.

※ If you do want the bass and trable to be adjusted, turn off the tone defeat mode.

3

DENON AVR-684 - 3 - 1

DENON AVR-684 - 3 - 2
(Remote control unit)

Display the parameter you want to adjust, then use the (left) and (right) buttons to set it.

DENON AVR-684 - 3 - 3
(1) ROOM SIZE

DENON AVR-684 - 3 - 4
(Remote control unit)

Use the (left) and (right) buttons to set the room size.

ROOM SIZE MED

DENON AVR-684 - 3 - 5

DENON AVR-684 - 3 - 6
(2) EFFECT LEVEL

DENON AVR-684 - 3 - 7
(Remote control unit)

Use the (left) and (right) buttons to set the effect level.

EFFECT LEVEL 14

DENON AVR-684 - 3 - 8

(3) DELAY TIME

DENON AVR-684 - DELAY TIME - 1

DENON AVR-684 - DELAY TIME - 2
(Remote control unit)

Use the (left) and (right) buttons to set the delay time.

DELAY 30ns

(Initial)

30ms

118

DENON AVR-684 - DELAY TIME - 3

(left) button

(right) button

(4) D. COMP.

DENON AVR-684 - D. COMP. - 1

DENON AVR-684 - D. COMP. - 2
(Remote control unit)

Use the (left) and (right) buttons to set the D. COMP.

D.COMP. OFF

(Initial)

DENON AVR-684 - D. COMP. - 3

LOW

MID

H

button

(ht) button

NOTE:

This parameter is displayed during DOLBY DIGITAL playback.

(5) TONE DEFEAT

DENON AVR-684 - TONE DEFEAT - 1

DENON AVR-684 - TONE DEFEAT - 2
(Remote control unit)

Use the (left) and (right) buttons to set the TONE DEFEAT.

TONE DEF. ON

(Initial)

DENON AVR-684 - TONE DEFEAT - 3

DENON AVR-684 - TONE DEFEAT - 4

(left) button

(right) button

DENON AVR-684 - TONE DEFEAT - 5
(Remote control unit)

Use the (left) and (right) buttons to set the SURROUND BACK SPEAKER.

SB:ON

(Initial)

DENON AVR-684 - TONE DEFEAT - 6

OFF

DENON AVR-684 - TONE DEFEAT - 7

(left) button

(right) button

(7) DEFAULT

DENON AVR-684 - DEFAULT - 1

DENON AVR-684 - DEFAULT - 2
(Remote control unit)

To reset the settings to the factory defaults, use the (left) and (right) buttons to display "Yes".

DEFAULT

DENON AVR-684 - DEFAULT - 3

NO

DENON AVR-684 - DEFAULT - 1

(left) button

(right) button

4

DENON AVR-684 - DEFAULT - 2
(Remote control unit)

Press the ENTER button to finish surround parameter mode.

  • Operating the surround mode and surround parameters from the main unit's panel.

1 Turn the SELECT knob to select the surround mode.

DENON AVR-684 - Turn the SELECT knob to select the surround mode. - 1
(Main unit)

DENON AVR-684 - Turn the SELECT knob to select the surround mode. - 2

  • When turned clockwise

DENON AVR-684 - Turn the SELECT knob to select the surround mode. - 3

  • When turned counterclockwise

DENON AVR-684 - Turn the SELECT knob to select the surround mode. - 4

※ To select the surround mode while adjusting the surround parameters, tone defeat or tone control, press the SURROUND MODE button then operate the selector.

DENON AVR-684 - Turn the SELECT knob to select the surround mode. - 5
SURROUND MODE
(Main unit)

Press the SURROUND PARAMETER button. Press and hold in the surround parameter bu

  • The parameters which can be set differ for the different surround modes. (Refer to "Surround Modes and Parameters" on page 50.)

DENON AVR-684 - Press the SURROUND PARAMETER button. Press and hold in the surround parameter bu - 1
SURROUND
PARAMETER
(Main unit)

3 Display the parameter you want to adjust, then turn the SELECT knob to set it.

NOTE:

  • When playing PCM digital signals or analog signals in the 5CH/6CH STEREO, ROCK ARENA, JAZZ CLUB, VIDEO GAME, MONO MOVIE or MATRIX surround modes and the input signal switches to a digital signal encoded in Dolby Digital, the Dolby surround mode switches automatically. When the input signal switches to a DTS signal, the mode automatically switches to DTS surround.
  • When the "5CH/6CH STEREO" mode is selected, the display differs according to the Surround Back CH ON/OFF.

Surround Back CH ON:

6CH STEREO

Surround Back CH OFF:

5CH STEREO

Surround parameters ③

ROOM SIZE:

This sets the size of the sound field. There are five settings: "small", "med.s" (medium-small), "medium", "med.l" (medium-large) and "large". "small" recreates a small sound field, "large" a large sound field.

EFFECT LEVEL:

This sets the strength of the surround effect.

The level can be set in 15 steps from 1 to 15. Lower the level if the sound seems distorted.

DELAY TIME:

In the matrix mode only, the delay time can be set within the range of 0 to 110 ms.

Surround modes and parameters

ModeChannel outputWhen playing Dolby Digital signalsWhen playing DTS signalsWhen playing PCM signals (96k)When playing ANALOG signals
FRONT L/RCENTERSURROUND L/RSURROUND BACKSUB-WOOFER
DIRECT×××○ (○)
STEREO×××○ (○)
EXTERNAL INPUT×××
DOLBY PRO LOGIC II○ *×
DTS NEO:6×
DOLBY DIGITAL×××
DTS SURROUND×××
5CH/6CH STEREO××○ (○)
ROCK ARENA××
JAZZ CLUB××
VIDEO GAME××
MONO MOVIE××
MATRIX××
VIRTUAL×××
○: Signal ×: No signal◎: Turned on or off by speaker configuration setting○: Able ×: Unable
ModeParameter (default values are shown in parentheses)
SURROUND PARAMETERPRO LOGIC II MUSIC MODE ONLYNEO:6 MUSIC MODE ONLYCINEMA EQDolby Digital signalsDTS signals
TONE CONTROLROOM SIZEEFFECT LEVELDELAY TIMESW ATT.MODEPANoramaDIMENSIONCENTER WIDTHCENTER IMAGED.COMP.LFELFE
DIRECT××××××××××××○ (OFF)○ (0dB)○ (0dB)
STEREO○ (0dB)×××××××××××○ (OFF)○ (0dB)○ (0dB)
EXTERNAL INPUT○ (0dB)×××○ (OFF)××××××××××
DOLBY PRO LOGIC II○ (0dB)××××○ (CINEMA)○ (OFF)○ (3)○ (3)×○ (OFF)○ (OFF)○ (0dB)-
DTS NEO:6○ (0dB)××××○ (CINEMA)---○ (0.2)○ (OFF)--○ (0dB)
DOLBY DIGITAL○ (0dB)×××××××××○ (OFF)○ (OFF)○ (0dB)-
DTS SURROUND○ (0dB)×××××××××○ (OFF)×-○ (0dB)
5CH/6CH STEREO○ (0dB)××××××××××××××
ROCK ARENA○ (0dB)○ (Medium)○ (10)××××××××××××
JAZZ CLUB○ (0dB)○ (Medium)○ (10)××××××××××××
VIDEO GAME○ (0dB)○ (Medium)○ (10)××××××××××××
MONO MOVIE○ (0dB)○ (Medium)○ (10)××××××××××××
MATRIX○ (0dB)××○ (30msec)×××××××××××
VIRTUAL○ (0dB)××××××××××○ (OFF)×××

O:Adjustable
X: Not adjustable

Auto preset memory

This unit is equipped with a function for automatically searching for FM broadcast stations and storing them in the preset memory.

DENON AVR-684 - Auto preset memory - 1

When the main unit's power operation switch turn on while pressing the set's PRESET button the unit automatically begins searching for FM broadcast stations.

DENON AVR-684 - Auto preset memory - 2
ON/STANDBY

DENON AVR-684 - Auto preset memory - 3
PRESET

2 When the first FM broadcast station is found, that station is stored in the preset memory at channel A1. Subsequent stations are automatically stored in order at preset channels A2 to A8, B1 to B8, C1 to C8, D1 to D8 and E1 to E8, for a maximum of 40 stations.
3 Channel A1 is tuned in after the auto preset memory operation is completed.

NOTES:

  • If an FM station cannot be preset automatically due to poor reception, use the "Manual tuning" operation to tune in the station, then preset it using the manual "Preset memory" operation.
  • To interrupt this function, press the power operation button.

DEFAULTVALUE

AUTO TUNER PRESETS
A1 ~ A887.5/89.1/98.1/107.9/90.1/90.1/90.1 MHz
B1 ~ B8520/600/1000/1400/1500/1710 kHz/90.1/90.1 MHz
C1 ~ C890.1 MHz
D1 ~ D890.1 MHz
E1 ~ E890.1 MHz

Auto tuning

DENON AVR-684 - Auto tuning - 1

DENON AVR-684 - Auto tuning - 2

1 Set the input source to "TUNER".

DENON AVR-684 - Set the input source to "TUNER". - 1
(Main unit)

DENON AVR-684 - Set the input source to "TUNER". - 2
(Remote control unit)

2 Watching the display, press the BAND button to select the desired band (AM or FM).

DENON AVR-684 - Watching the display, press the BAND button to select the desired band (AM or FM). - 1
(Main unit)

DENON AVR-684 - Watching the display, press the BAND button to select the desired band (AM or FM). - 2
(Remote control unit)

Press the MODE button to set the auto tuning mode.

DENON AVR-684 - Press the MODE button to set the auto tuning mode. - 1
(Remote control unit)

Press the TUNING UP (+) or (-) button.

DENON AVR-684 - Press the TUNING UP (+) or (-) button. - 1
(Main unit)

DENON AVR-684 - Press the TUNING UP (+) or (-) button. - 2
(Remote control unit)

Automatic searching begins, then stops when a station is tuned in.

NOTE:

  • When in the auto tuning mode on the FM band, the "STEREO" indicator lights on the display when a stereo broadcast is tuned in. At open frequencies, the noise is muted and the "TUNED" and "STEREO" indicators turn off.

Manual tuning

1 Set the input function to "TUNER".
2 Watching the display, press the BAND button to select the desired band (AM or FM).

Press the MODE button to set the manual tuning mode. Check that the display's "AUTO" indicator turns off.
Press the TUNING (+) or (-) button to tune in the desired station. The frequency changes continuously when the button is held in.

NOTE:

  • When the manual tuning mode is set, FM stereo broadcasts are received in monaural and the "STEREO" indicator turns off.

Preset stations

DENON AVR-684 - Preset stations - 1

DENON AVR-684 - Preset stations - 2

Preparations:

Use the "Auto tuning" or "Manual tuning" operation to tune in the station to be preset in the memory.

DENON AVR-684 - Preparations: - 1

DENON AVR-684 - Preparations: - 2
(Remote control unit)
Press the MEMORY button.

DENON AVR-684 - Preparations: - 3

Press the SHIFT button and select the desired memory block (A to E).

DENON AVR-684 - Preparations: - 4
(Main unit)

DENON AVR-684 - Preparations: - 5
(Remote control unit)

NOTE: Please make sure the "AUDIO" position of the slide switch on the remote control unit.

DENON AVR-684 - Preparations: - 6

Press the PRESET (+) or (-) button to select the desired preset channel (1 to 8).

DENON AVR-684 - Preparations: - 7
(Main unit)

DENON AVR-684 - Preparations: - 8
(Remote control unit)

DENON AVR-684 - Preparations: - 9

DENON AVR-684 - Preparations: - 10
(Remotecnrolunit)

Press the MEMORY button again to store the station in the preset memory.

※ To preset other channels, repeat steps 1 to 4.

A total of 40 broadcast stations can be preset - 8 stations (channels 1 to 8) in each of blocks A to E.

Recalling preset stations

DENON AVR-684 - Recalling preset stations - 1

DENON AVR-684 - Recalling preset stations - 2

DENON AVR-684 - Recalling preset stations - 3

Watching the display, press the SHIFT button to select the preset memory block.

DENON AVR-684 - Recalling preset stations - 4
(Main unit)

DENON AVR-684 - Recalling preset stations - 5
(Remotecnrolunit)

NOTE: Please make sure the "AUDIO" position of the slide switch on the remote control unit.

DENON AVR-684 - Recalling preset stations - 6

Watching the display, press the PRESET (+) or (-) button to select the desired preset channel.

DENON AVR-684 - Recalling preset stations - 7
(Main unit)

DENON AVR-684 - Recalling preset stations - 8
(Remotecnrolunit)

16 LAST FUNCTION MEMORY

  • This unit is equipped with a last function memory which stores the input and output setting conditions as they were immediately before the power is switched off.
  • The unit is also equipped with a back-up memory. This function provides approximately one week of memory storage when the main unit's power switch is off and with the power cord disconnected.

17 INITIALIZATION OF THE MICROPROCESSOR

When the indication of the display is not normal or when the operation of the unit does not show the reasonable result, the initialization of the microprocessor is required by the following procedure.

DENON AVR-684 - INITIALIZATION OF THE MICROPROCESSOR - 1

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following SPEAKER A button and B button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

NOTES:

  • If step 3 does not work, start over from step 1.
  • If the microprocessor has been reset, all the button settings are reset to the default values (the values set upon shipment from the factory).

18 ADDITIONAL INFORMATION

Optimum surround sound for different sources

There are currently various types of multi-channel signals (signals or formats with more than two channels).

Types of multi-channel signals

Dolby Digital, Dolby Pro Logic, DTS, high definition 3-1 signals (Japan MUSE Hi-Vision audio), DVD-Audio, SACD (Super Audio CD), MPEG multi-channel audio, etc.

"Source" here does not refer to the type of signal (format) but the recorded content. Sources can be divided into two major categories.

Types of sources

- Movie audio

Signals created to be played in movie theaters. In general sound is recorded to be played in movie theaters equipped with multiple surround speakers, regardless of the format (Dolby Digital, DTS, etc.).

DENON AVR-684 - - Movie audio - 1
Movie theater sound field

DENON AVR-684 - - Movie audio - 2
Listening room sound field

In this case it is important to achieve the same sense of expansion as in a movie theater with the surround channels. To do so, in some cases the number of surround speakers is increased (to four or eight) or speakers with bipolar or dipolar properties are used.

/SL: Surround L channel
SR: Surround R channel
SB: Surround back channel

  • Other types of audio These signals are designed to recreate a 360^ sound field using three to five speakers.

DENON AVR-684 - - Movie audio - 3
Multiple surround speakers
(For 6.1-channel system)

In this case the speakers should surround the listener from all sides to create a uniform sound field from 360^ . Ideally the surround speakers should function as "point" sound sources in the same way as the front speakers.

These two types of sources thus have different properties, and different speaker settings, particularly for the surround speakers, are required in order to achieve the ideal sound.

Surround back speakers

A 6.1-channel system is a conventional 5.1-channel system to which the "surround back" (SB) channel has been added. This makes it easy to achieve sound positioned directly behind the listener, something that was previously difficult with sources designed for conventional multi surround speakers. In addition, the acoustic image extending between the sides and the rear is narrowed, thus greatly improving the expression of the surround signals for sounds moving from the sides to the back and from the front to the point directly behind the listening position.

DENON AVR-684 - Surround back speakers - 1
Change of positioning and acoustic image with 5.1-channel systems
Movement of acoustic image from SR to SL

DENON AVR-684 - Surround back speakers - 2
Change of positioning and acoustic image with 6.1-channel systems
Movement of acoustic image from SR to SB to SL

With this set, speaker(s) for 1 or 2 channels are required to achieve a 6.1-channel system (DTS-ES, etc.). Adding these speakers, however, increases the surround effect not only with sources recorded in 6.1 channels but also with conventional 2- to 5.1-channel sources. All the Denon original surround modes (see page 54) are compatible with 6.1-channel playback, so you can enjoy 6.1-channel sound with any signal source.

■ Placement of the surround left and right channels when using surround back speakers

Using surround back speakers greatly improves the positioning of the sound at the rear. Because of this, the surround left and right channels play an important role in achieving a smooth transition of the acoustic image from the front to the back. As shown on the diagram above, in a movie theater the surround signals are also produced from diagonally in front of the listeners, creating an acoustic image as if the sound were floating in space.

To achieve these effects, we recommend placing the speakers for the surround left and right channels slightly more towards the front than with conventional surround systems. Doing so sometimes increases the surround effect when playing conventional 5.1-channel sources in the 6.1 surround or DTS-ES Matrix 6.1 mode. Check the surround effects of the various modes before selecting the surround mode.

Speaker setting examples

Here we describe a number of speaker settings for different purposes. Use these examples as guides to set up your system according to the type of speakers used and the main usage purpose.

1. DTS-ES compatible system (using surround back speakers)

(1) Basic setting for primarily watching movies

DENON AVR-684 - Basic setting for primarily watching movies - 1
Surround back speakers (1 spkr)
As seen from above

  • Set the front speakers with their front surfaces as flush with the TV or monitor screen as possible. Set the center speaker between the front left and right speakers and no further from the listening position than the front speakers.
  • Consult the owner's manual for your subwoofer for advice on placing the subwoofer within the listening room.
  • If the surround speakers are direct-radiating (monopolar) then place them slightly behind and at an angle to the listening position and parallel to the walls at a position 2 to 3 feet (60 to 90~cm ) above ear level at the prime listening position.
  • When using two surround back speakers, place them at the back facing the front at a narrower distance than the front left and right speakers. When using one surround back speaker, place it at the rear center facing the front at a slightly higher position (0 to 20cm ) than the surround speakers.
  • We recommend installing the surround back speaker(s) at a slightly downward facing angle. This effectively prevents the surround back channel signals from reflecting off the monitor or screen at the front center, resulting in interference and making the sense of movement from the front to the back less sharp.

DENON AVR-684 - Basic setting for primarily watching movies - 2
As seen from the side

(2) Setting for primarily watching movies using diffusion type speakers for the surround speakers

For the greatest sense of surround sound envelopment, diffuse radiation speakers such as bipolar types, or dipolar types, provide a wider dispersion than is possible to obtain from a direct radiating speaker (monopolar). Place these speakers at either side of the prime listening position, mounted above ear level.

DENON AVR-684 - Setting for primarily watching movies using diffusion type speakers for the surround speakers - 1
Path of the surround sound from the speakers to the listening position
Surround back speakers (1 spkr)
As seen from above

  • Set the front speakers, center speaker and subwoofer in the same positions as in example (1).
  • It is best to place the surround speakers directly at the side or slightly to the front of the viewing position, and 2 to 3 feet (60 to 90 cm) above the ears.
  • Same as surround back speaker installation method (1). Using dipolar speakers for the surround back speakers as well is more effective.
  • Connect the surround speakers to the surround speaker jacks.
  • The signals from the surround channels reflect off the walls as shown on the diagram at the left, creating an enveloping and realistic surround sound presentation.

DENON AVR-684 - Setting for primarily watching movies using diffusion type speakers for the surround speakers - 2
As seen from the side

For multi-channel music sources however, the use of bipolar or dipolar speakers mounted at the sides of the listening position may not be satisfactory in order to create a coherent 360 degree surround sound field. Connect another pair of direct radiating speakers as described in example (3) and place them at the rear corners of the room facing towards the prime listening position.

2. When not using surround back speakers

DENON AVR-684 - When not using surround back speakers - 1
As seen from above

  • Set the front speakers with their front surfaces as flush with the TV or monitor screen as possible. Set the center speaker between the front left and right speakers and no further from the listening position than the front speakers.
  • Consult the owner's manual for your subwoofer for advice on placing the subwoofer within the listening room.
  • If the surround speakers are direct-radiating (monopolar) then place them slightly behind and at an angle to the listening position and parallel to the walls at a position 2 to 3 feet (60 to 90~cm ) above ear level at the prime listening position.

DENON AVR-684 - When not using surround back speakers - 2
As seen from the side

Surround

The AVR-1604/684 is equipped with a digital signal processing circuit that lets you play program sources in the surround mode to achieve the same sense of presence as in a movie theater.

Dolby Surround

(1) Dolby Digital

Dolby Digital is the multi-channel digital signal format developed by Dolby Laboratories.

Dolby Digital consists of up to "5.1" channels - front left, front right, center, surround left, surround right, and an additional channel exclusively reserved for additional deep bass sound effects (the Low Frequency Effects - LFE - channel, also called the ".1" channel, containing bass frequencies of up to 120 Hz).

Unlike the analog Dolby Pro Logic format, Dolby Digital's main channels can all contain full range sound information, from the lowest bass, up to the highest frequencies - 22 kHz. The signals within each channel are distinct from the others, allowing pinpoint sound imaging, and Dolby Digital offers tremendous dynamic range from the most powerful sound effects to the quietest, softest sounds, free from noise and distortion.

Dolby Digital and Dolby Pro Logic

Comparison of home surround systemsDolby DigitalDolby Pro Logic
No. recorded channels (elements)5.1 ch2 ch
No. playback channels5.1 ch4 ch
Playback channels (max.)L, R, C, SL, SR, SWL, R, C, S (SW - recommended)
Audio processingDigital discrete processing Dolby Digital encoding/decodingAnalog matrix processing Dolby Surround
High frequency playback limit of surround channel20 kHz7 kHz

Dolby Digital compatible media and playback methods

Marks indicating Dolby Digital compatibility: DOLBY DIGITAL

The following are general examples. Also refer to the player's operating instructions.

MediaDolby Digital output jacksPlayback method (reference page)
LD (VDP)Coaxial Dolby Digital RF output jack ※1Set the input mode to “AUTO”. (Page 33)
DVDOptical or coaxial digital output (same as for PCM) ※2Set the input mode to “AUTO”. (Page 33)
Others (satellite broadcasts, CATV, etc.)Optical or coaxial digital output (same as for PCM)Set the input mode to “AUTO”. (Page 33)

※ 1 Please use a commercially available adapter when connecting the Dolby Digital RF output jack of the LD player to the digital input jack. Please refer to the instruction manual of the adapter when making connection.
※ 2 Some DVD digital outputs have the function of switching the Dolby Digital signal output method between "bit stream" and "(convert to) PCM". When playing in Dolby Digital surround on the AVR-1604/684, switch the DVD player's output mode to "bit stream". In some cases players are equipped with both "bit stream + PCM" and "PCM only" digital outputs. In this case connect the "bit stream + PCM" jacks to the AVR-1604/684.

(2) Dolby Pro Logic II

  • Dolby Pro-Logic II is a new multi-channel playback format developed by Dolby Laboratories using feedback logic steering technology and offering improvements over conventional Dolby Pro Logic circuits.
  • Dolby Pro Logic II can be used to decode not only sources recorded in Dolby Surround (※) but also regular stereo sources into five channels (front left, front right, center, surround left and surround right) to achieve surround sound.
  • Whereas with conventional Dolby Pro Logic the surround channel playback frequency band was limited, Dolby Pro Logic II offers a wider band range (20 Hz to 20 kHz or greater). In addition, the surround channels were monaural (the surround left and right channels were the same) with previous Dolby Pro Logic, but Dolby Pro Logic II they are played as stereo signals.
  • Various parameters can be set according to the type of source and the contents, so it is possible to achieve optimum decoding (see page 48).

※ Sources recorded in Dolby Surround

These are sources in which three or more channels of surround have been recorded as two channels of signals using Dolby Surround encoding technology.

Dolby Surround is used for the sound tracks of movies recorded on DVDs, LDs and video cassettes to be played on stereo VCRs, as well as for the stereo broadcast signals of FM radio, TV, satellite broadcasts and cable TV.

Decoding these signals with Dolby Pro Logic makes it possible to achieve multi-channel surround playback. The signals can also be played on ordinary stereo equipment, in which case they provide normal stereo sound.

There are two types of DVD Dolby surround recording signals.

① 2-channel PCM stereo signals
② 2-channel Dolby Digital signals

When either of these signals is input to the AVR-1604/684, the surround mode is automatically set to Dolby Pro Logic II when the "DOLBY/DTS SURROUND" mode is selected.

Sources recorded in Dolby Surround are indicated with the logo mark shown below.

Dolby Surround support mark: DOLBY SURROUND

Manufactured under license from Dolby Laboratories.

"Dolby", "Pro Logic" and the double-D symbol are trademarks of Dolby Laboratories.

DTS Digital Surround

Digital Theater Surround (also called simply DTS) is a multi-channel digital signal format developed by Digital Theater Systems.

DTS offers the same "5.1" playback channels as Dolby Digital (front left, front right and center, surround left and surround right) as well as the stereo 2-channel mode. The signals for the different channels are fully independent, eliminating the risk of deterioration of sound quality due to interference between signals, crosstalk, etc.

DTS features a relatively higher bit rate as compared to Dolby Digital (1234 kbps for CDs and LDs, 1536 kbps for DVDs) so it operates with a relatively low compression rate. Because of this the amount of data is great, and when DTS playback is used in movie theaters, a separate CD-ROM synchronized with the film is played.

With LDs and DVDs, there is of course no need for an extra disc; the pictures and sound can be recorded simultaneously on the same disc, so the discs can be handled in the same way as discs with other formats.

There are also music CDs recorded in DTS. These CDs include 5.1-channel surround signals (compared to two channels on current CDs). They do not include picture data, but they offer surround playback on CD players that are equipped with digital outputs (PCM type digital output required). DTS surround track playback offers the same intricate, grand sound as in a movie theater, right in your own listening room.

DTS compatible media and playback methods

Marks indicating DTS compatibility: dts and

DENON AVR-684 - DTS compatible media and playback methods - 1

SURROUND

The following are general examples. Also refer to the player's operating instructions.

MediaDolby Digital output jacksPlayback method (reference page)
CDOptical or coaxial digital output (same as for PCM) ※2Set the input mode to “AUTO” or “DTS” (page 33). Never set the mode to “ANALOG” or “PCM”. ※1
LD (VDP)Optical or coaxial digital output (same as for PCM) ※2Set the input mode to “AUTO” or “DTS” (page 33). Never set the mode to “ANALOG” or “PCM”. ※1
DVDOptical or coaxial digital output (same as for PCM) ※3Set the input mode to “AUTO” or “DTS” (page 33).

※ 1 DTS signals are recorded in the same way on CDs and LDs as PCM signals. Because of this, the un-decoded DTS signals are output as random "hissy" noise from the CD or LD player's analog outputs. If this noise is played with the amplifier set at a very high volume, it may possibly cause damage to the speakers. To avoid this, be sure to switch the input mode to "AUTO" or "DTS" before playing CDs or LDs recorded in DTS. Also, never switch the input mode to "ANALOG" or "PCM" during playback. The same holds true when playing CDs or LDs on a DVD player or LD/DVD compatible player. For DVDs, the DTS signals are recorded in a special way so this problem does not occur.
※ 2 The signals provided at the digital outputs of a CD or LD player may undergo some sort of internal signal processing (output level adjustment, sampling frequency conversion, etc.). In this case the DTS-encoded signals may be processed erroneously, in which case they cannot be decoded by the AVR-1604/684, or may only produce noise. Before playing DTS signals for the first time, turn down the master volume to a low level, start playing the DTS disc, then check whether the DTS indicator on the AVR-1604/684 (see page 51) lights before turning up the master volume.
※3 A DVD player with DTS-compatible digital output is required to play DTS DVDs. A DTS Digital Output logo is featured on the front panel of compatible DVD players. Recent DENON DVD player models feature DTS-compatible digital output – consult the player's owner's manual for information on configuring the digital output for DTS playback of DTS-encoded DVDs.

Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942, 5,956,674, 5,974,380, 5,978,762 and other world-wide patents issued and pending.

"DTS", "DTS-ES Extended Surround" and "Neo:6" are trademarks of Digital Theater Systems, Inc. ©1996, 2000 Digital Theater Systems, Inc. All Rights Reserved.

DTS-ES Extended Surround™

DTS-ES Extended Surround is a new multi-channel digital signal format developed by Digital Theater Systems Inc. While offering high compatibility with the conventional DTS Digital Surround format, DTS-ES Extended Surround greatly improves the 360-degree surround impression and space expression thanks to further expanded surround signals. This format has been used professionally in movie theaters since 1999.

In addition to the 5.1 surround channels (FL, FR, C, SL, SR and LFE), DTS-ES Extended Surround also offers the SB (Surround Back, sometimes also referred to as "surround center") channel for surround playback with a total of 6.1 channels. DTS-ES Extended Surround includes two signal formats with different surround signal recording methods, as described below.

DTS-ES™ Discrete 6.1

DTS-ES Discrete 6.1 is the newest recording format. With it, all 6.1 channels (including the SB channel) are recorded independently using a digital discrete system. The main feature of this format is that because the SL, SR and SB channels are fully independent, the sound can be designed with total freedom and it is possible to achieve a sense that the acoustic images are moving about freely among the background sounds surrounding the listener from 360 degrees.

Though maximum performance is achieved when sound tracks recorded with this system are played using a DTS-ES decoder, when played with a conventional DTS decoder the SB channel signals are automatically down-mixed to the SL and SR channels, so none of the signal components are lost.

DTS-ESTM Matrix 6.1

With this format, the additional SB channel signals undergo matrix encoding and are input to the SL and SR channels beforehand. Upon playback they are decoded to the SL, SR and SB channels. The performance of the encoder used at the time of recording can be fully matched using a high precision digital matrix decoder developed by DTS, thereby achieving surround sound more faithful to the producer's sound design aims than with conventional 5.1- or 6.1-channel systems.

In addition, the bit stream format is 100% compatible with conventional DTS signals, so the effect of the Matrix 6.1 format can be achieved even with 5.1-channel signal sources. Of course it is also possible to play DTS-ES Matrix 6.1 encoded sources with a DTS 5.1-channel decoder.

When DTS-ES Discrete 6.1 or Matrix 6.1 encoded sources are decoded with a DTS-ES decoder, the format is automatically detected upon decoding and the optimum playing mode is selected. However, some Matrix 6.1 sources may be detected as having a 5.1-channel format, so the DTS-ES Matrix 6.1 mode must be set manually to play these sources.

(For instructions on selecting the surround mode, see page 51.)

The DTS-ES decoder includes another function, the DTS Neo:6 surround mode for 6.1-channel playback of digital PCM and analog signal sources.

DTS Neo:6TM surround

This mode applies conventional 2-channel signals to the high precision digital matrix decoder used for DTS-ES Matrix 6.1 to achieve 6.1-channel surround playback. High precision input signal detection and matrix processing enable full band reproduction (frequency response of 20Hz to 20kHz or greater) for all 6.1 channels, and separation between the different channels is improved to the same level as that of a digital discrete system.

DTS Neo:6 surround includes two modes for selecting the optimum decoding for the signal source.

DTS Neo:6 Cinema

This mode is optimum for playing movies. Decoding is performed with emphasis on separation performance to achieve the same atmosphere with 2-channel sources as with 6.1-channel sources.

This mode is effective for playing sources recorded in conventional surround formats as well, because the in-phase component is assigned mainly to the center channel (C) and the reversed phase component to the surround (SL, SR and SB channels).

DTS Neo:6 Music

This mode is suited mainly for playing music. The front channel (FL and FR) signals bypass the decoder and are played directly so there is no loss of sound quality, and the effect of the surround signals output from the center (C) and surround (SL, SR and SB) channels add a natural sense of expansion to the sound field.

19 TROUBLESHOOTING

If a problem should arise, first check the following.

1. Are the connections correct?

2. Have you operated the receiver according to the Operating Instructions?

3. Are the speakers and other components operating property?

If this unit is not operating properly, check the items listed in the table below. Should the problem persist, there may be a malfunction.

Disconnect the power immediately and contact your store of purchase.

SymptomCauseMeasuresPage
Common problems arising when listening to the CD, records, tapes, and FM broadcasts, etc.DISPLAY not lit and sound not produced when power switch set to on.• Power cord not plugged in securely.• Check the insertion of the power cord plug. • Turn the power off with the remote control unit after turning the POWER operation switch on.9 32
DISPLAY lit but sound not produced.• Speaker cords not securely connected. • Improper position of the audio function button. • Volume control set to minimum. • MUTING is on. • Digital signals not input Digital input selected.• Connect securely. • Set to a suitable position. • Turn volume up to suitable level. • Switch off MUTING. • Input digital signals or select input jacks to which digital signals are being input.14, 15 33 34 35 34
DISPLAY not displayed and the "ON/STANDBY" LED flashes at a high rate• Speaker terminals are short-circuited. • Block the ventilation holes of the set. • The unit is operating at continuous high power conditions and/or inadequate ventilation.• Switch power off, connect speakers properly, then switch power back on. • Turn off the set's power, then ventilate it well to cool it down. Once the set is cooled down, turn the power back on. • Turn off the set's power, then ventilate it well to cool it down. Once the set is cooled down, turn the power back on.14, 15 5, 15 5, 15
Sound produced only from one channel.• Incomplete connection of speaker cords. • Incomplete connection of input/output cords.• Connect securely. • Connect securely.14, 15 9 ~ 15
Positions of instruments reversed during stereo playback.• Reverse connections of left and right speakers or left and right input/output cords.• Check left and right connections.14, 15
Remote control unit.This unit does not operate properly when remote control unit is used.• Batteries dead. • Remote control unit too far from this unit. • Obstacle between this unit and remote control unit. • Different button is being pressed. • ⊕ and ⊕ ends of battery inserted in reverse.• Replace with new batteries. • Move closer. • Remove obstacle. • Press the proper button. • Insert batteries properly.16 16 16 — 16

Note:

When a subwoofer has been connected and the virtual surround function is being used, the signal played from the subwoofer channel is LFE only (only when playing Dolby Digital or DTS signals) for initial factory settings (i.e., the setting of the front speaker is "LARGE" and the setting of the subwoofer mode is "NORM").

When subwoofer effects are felt to be weak, while in the system setup mode try setting the subwoofer mode to " +MAIN", or the front speaker to "SMALL" in the system setup "Speaker Configuration" settings.

Making these settings will result in the low-frequency sounds of the front channel being played from the subwoofer.

20 SPECIFICATIONS

Audio section

Power amplifier Rated output:

Front:75 W + 75 W(8 Ω/ohms, 20 Hz ~ 20 kHz with 0.08% T.H.D.)
110 W + 110 W(6 Ω/ohms, 1 kHz with 0.7% T.H.D.)
Center:75 W(8 Ω/ohms, 20 Hz ~ 20 kHz with 0.08% T.H.D.)
110 W(6 Ω/ohms, 1 kHz with 0.7% T.H.D.)
Surround:75 W + 75 W(8 Ω/ohms, 20 Hz ~ 20 kHz with 0.08% T.H.D.)
110 W + 110 W(6 Ω/ohms, 1 kHz with 0.7% T.H.D.)
Surround back:75W(8 Ω/ohms, 20 Hz ~ 20 kHz with 0.08% T.H.D.)
110 W(6 Ω/ohms, 1 kHz with 0.7% T.H.D.)
Front:A or B6 to 16 Ω/ohms
A + B12 to 16 Ω/ohms
Center/Surround/Surr. Back:6 to 16 Ω/ohms
  • Analog Input sensitivity / input impedance: Frequency response: S/N ratio:
200 mV / 47 kΩ/kohms
10 Hz ~ 100 kHz: +1, -3 dB (TONE DEFEAT ON)
98 dB (IHF-A weighted) (TONE DEFEAT ON)

Video section

  • Standard video jacks Input / output level and impedance: Frequency response:
1 Vp-p, 75 Ω/ohms
5 Hz ~ 10 MHz — +1, -3 dB
  • S-video jacks Input / output level and impedance: Frequency response:
Y (brightness) signal — 1 Vp-p, 75 Ω/ohms
C (color) signal — 0.286 Vp-p, 75 Ω/ohms
5 Hz ~ 10 MHz — +1, -3 dB

Color component video jacks Input / output level and impedance:

Y (brightness) signal — 1 Vp-p, 75 Ω/ohms PB/CB (blue) signal — 0.7 Vp-p, 75 Ω/ohms PR/CR (red) signal — 0.7 Vp-p, 75 Ω/ohms 5 Hz ~ 30 MHz — +0, -3 dB

Frequency response:

■ Tuner section

[FM] (note: μV at 75 Ω/ohms, 0 dBf = 1 x 10-15W)[AM]
87.50 MHz ~ 107.90 MHz520 kHz ~ 1710 kHz
1.0 μV (11.2 dBf)18 μV
MONO1.6 μV (15.3 dBf)
STEREO23 μV (38.5 dBf)
MONO80 dB (IHF-A weighted)
STEREO75 dB (IHF-A weighted)
MONO0.15% (1kHz)
STEREO0.3% (1kHz)

General

Power supply:AC 120 V, 60 Hz
Power consumption:4.0 A
Maximum external dimensions:434 (W) x 147 (H) x 417 (D) mm (17-3/32" x 5-25/32" x 16-23/64")
Mass:10.8 kg (23 lbs 13 oz)

Remote control unit (RC-941)

Batteries:R6P/AA Type (two batteries)
External dimensions:55 (W) x 225 (H) x 34.5 (D) mm (2-11/64" x 8-55/64" x 1-9/64")
Mass:165 g (Approx. 5.8 oz) (including batteries)
  • For purposes of improvement, specifications and design are subject to change without notice.

INTRODUCTION

  1. Mode auto surround (Auto Surround Mode)
CDAUXDVDTUVCRCDROFF

DBS/CABLE ABC (CABLE)

DISPLAY :Changer I'affichage

DISPLAY :Changer I'affichage

No.
CD1
TAPE2
CDR/MD3
DVD/VDP4
VCR5
No setting0

DENON AVR-684 - INTRODUCTION - 1

Avant l'utilisation

DENON AVR-684 - Avant l'utilisation - 1

DENON AVR-684 - Avant l'utilisation - 2

Preparatifs:

Cancelling simulcast playback.

Recalling preset stations

DENON AVR-684 - Recalling preset stations - 1

DENON AVR-684 - Recalling preset stations - 2

DENON AVR-684 - Recalling preset stations - 3

DTS Digital Surround

Ambiance Etendue DTS-ES™ (DTS-ES Extended Surround™)

Matrice DTS-ESTM 6.1 (DTS-ESTM Matrix 6.1)

  • Prises video standard

Signal Y — 1 Vc-c, 75 Ω/ohms

Signal C — 0,286 Vc-c, 75 Ω/ohms

Signal Y — 1 Vc-c, 75 Ω/ohms

Signal P_B / C_B 0,7 Vc-c,75 Ω/ohms

Signal PR / CR 0,7Vc-C,75Ω/ohms

5 Hz ~ 30 MHz — +0, -3 dB

Sectiontuner

[FM] (Remarque: V à 75 Ω/ohms, 0 dBf = 1 x 10 ^-15 W) [AM]

520 kHz ~ 1710 kHz

87,50 MHz ~ 107,90 MHz

18 V

1,0 V (11.2 dBf)

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Product information

Brand : DENON

Model : AVR-684

Category : AV amplifier