DMM8 UL - Uncategorized AKG - Free user manual and instructions

USER MANUAL DMM8 UL AKG

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help. 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. Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCCregulations.Changesormodicationsnotexpresslyapprovedbythepartyresponsible for compliance could void the user’s authority to operate this equipment. Aktualisierung DiesesManualkannohneVorankündigunggeändertwerdenundstelltkeineVerpichtung seitens der Firma AKG Acoustics GmbH dar. Version 1.0 Ausgabedatum Juli 2015/DE 07/15/5061691ALLgemeines DMM8 MANUAL 5 1 Allgemeines

EQ 1.4 kHz / 11.3 kHz

1.1 Purpose of the manual 70

1.2 Retention of the manual 70

3.2 Required knowledge and areas of

responsibility of the operators/users 73

3.3 Explanation of the symbols used 73

4 DECLARATION OF CONFORMITY 74

5.3 Front: Description of the controls 77

5.4 Rear: Description of the controls 79

5.6 Expansion/cascading 86

6.3 Connecting microphones and

6.4 Connect to the mains power supply 89

7 FUNCTIONAL DESCRIPTION 90

7.1 Control concept 90

7.2 Operation of the rotary knobs 90

7.3.4 Functions of the stereo headphone

8.7.3 Deleting a preset 119

8.11.5 Unlocking individual channels 123

8.11.6 Locking individual channels 124

8.13 Resetting the factory settings 127

9 TROUBLESHOOTING 129IMPRESSUM DMM8 MANUAL 69 Publisher AKG Acoustics GmbH Laxenburger Straße 254 1230 Wien Austria Tel: +43 (0)1 86654-0 Fax: +43 (0)1 86654-8800 sales@akg.com AKG ACOUSTICS, U.S. 8500 Balboa Blvd. Dock 15 Northridge, CA 91329 U.S.A. Tel: +1 818 920-3224 akgusatechsupport@harman.com Copyright © 2015 AKG Acoustics GmbH All rights reserved. The information contained in this manual, including any drawings and photos provided, are the intellectual property of AKG Acoustics GmbH. In accordance with copyright law, it is not permitted for this documentation or parts thereof to be reproduced or transmitted for any purpose in any form using any means, whether electronic or mechanical, by photocopying, recording or using information storage and infor- mation processing systems without the express, written consent of AKG Acoustics GmbH. Forwarding to third parties is not permitted. This manual should be returned to us on request. FCC Statement Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help. 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. Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCCregulations.Changesormodicationsnotexpresslyapprovedbythepartyresponsible for compliance could void the user’s authority to operate this equipment. Updates Thismanualmaybemodiedwithoutpriornoticeanddoesnotrepresentanyobligationon the part of AKG Acoustics GmbH. Version 1.0 Publication date July 2015/EN 07/15/5061691generAL DMM8 MANUAL 70 1 General

1.1 Purpose of the manual

This manual is intended to enable you to:

• operate the equipment safely

• use the equipment correctly.

1.2 Retention of the manual

Print out this manual and keep it carefully or store it electronically at an easily accessible location. Pass this manual on to subsequent owners. This manual is an important part of the equipment.

• The equipment is used for purposes other than those described under correct usage.

• Damage is incurred due to incorrect operation

• Unauthorizedornon-permittedmodicationshavingbeencarried out.

• Damage due to out of date documentation.

• incorrect operation.

• Unauthorizedornon-permittedmodicationshavingbeencarried out.

• Damage due to out of date documentation. Liability Warrantyscope of sUppLy DMM8 MANUAL 71 2 Scope of supply

Check that the package contains all the parts given below. If anything is missing, please contact your AKG dealer.

2.2 Optional accessories

Optional accessories can be found at www.akg.com. Your dealer will be happy to advise. Packing unit Optional accessoriessAfety AnD environment DMM8 MANUAL 72 3 Safety and environment

Caution: Risk of damage

• Protect the equipment against - direct sunlight - theimpactofsignicantdustandhumidity - rain - vibrations or knocks.

• Do not spill any liquids on the equipment and do not allow any other objects to drop through the ventilation slits into the equipment.

• Donotplaceanycontainerslledwithliquidontheequipment.

• The equipment must only be used in dry rooms.

• The equipment must only be opened, serviced and repaired by authorized personnel. The equipment contains no user-serviceable parts.

• Before connecting the equipment to power, check that the AC mains voltage stated on the integrated power adapter is identical to the AC mains voltage available where the equipment will be used.

• Only operate the equipment on a mains voltage between the 100 and 240 V AC. Using adapters with different output voltage or cur- rent types may cause serious damage to the equipment.

• If any solid or liquid should get into the equipment, shut down the system immediately. Disconnect the power cable from the power outlet at once and have the equipment checked by our customer service department.

• If the equipment is not going to be used for a longer time, discon- nect the mains cable from the power outlet. Please note that if you switch the equipment off while leaving the mains cable plugged in, it is not fully isolated from the power network.

• Do not place the equipment near heat sources such as radiators, heatingducts,ampliers,etc. SafetysAfety AnD environment DMM8 MANUAL 73

• To avoid hum or interference, route all audio lines, particularly those connected to the microphone inputs, away from power lines of any type. If you use cable ducts, be sure to use separate ducts for the audio lines.

• Clean the equipment with a moistened (not wet) cloth only. Be sure to disconnect the power adapter from the power outlet beforehand. Never use caustic or scouring cleaners or cleaning products con- taining alcohol or solvents since these may damage the enamel and plastic parts.

• Only use the equipment for the applications described in this manual. AKG cannot accept any liability for damages resulting from improper handling or misuse.

3.2 Required knowledge and areas of responsibility of the operators/users

• The cascading of the devices is only permitted to be carried out by qualiedpersonnel.

• Qualiedexpertpersonnelareabletodeterminerisksandavoid hazards when using the product, based on their professional train- ing, education and experience.

3.3 Explanation of the symbols used

Caution: Risk of damage Not following the instructions may damage the equip- ment.

Warning: Hazard due to electric shock

Hazardous situation: Not following the instructions may result in minor or serious injury. Describes useful information and application notes for efcientoperationoftheequipment.DecLArAtion of conformity DMM8 MANUAL 74 Provides reference to more in-depth information and downloads online. Describes information on the correct disposal of the components described.

The Digital Automatic Microphone Mixer DMM8 U (UL, ULD) is designed solely for mixing audio signals.

Any use not given under correct use is regarded as incorrect.

• The packaging is recyclable. Dispose of the packaging in an appro- priate recycling collection system.

• In case of scrapping the equipment, separate the housing, electron- ics and cables and dispose of all the components in accordance with the appropriate waste disposal regulations. 4 Declaration of Conformity This product conforms to the standards listed in the Declaration of Conformity. You can download the Declaration of Conformity at www.akg. com or request it by email from sales@akg.com.Description DMM8 MANUAL 75 5 Description

The DMM8 U (UL, ULD) is a 19" Digital Automatic Microphone Mixer. Internal signal processing takes place digitally. The inputs and outputs are available as analog and digital. It has 6 balanced mono inputsthatcanbeconguredasmicrophone inputs or line inputs (e.g. for wireless microphone receivers). On the output side it has one balanced master output each for the left and right channels, one stereo recording output and one stereo headphone output. It has a USB port that can be used as both an input and an output. Inputs and outputs are controlled via LAN and Dante™ networks (optional). The device has a wide-range power supply unit and is connected to the power network using the mains cable supplied. In addition to multiple DSP digital signal processing functions, the DMM8 U (UL, ULD) also has innovative automatic mixing functions. Up to ten DMM8 U (UL, ULD) can be cascaded if the six balanced inputs arenotsufcientforyourapplication.

General Dimensions Standard housing for rack mounting, 1

5.3 Front: Description of the controls

There is a total of nine controls on the front. Figure 1: Front of the DMM8 U (UL, ULD) The following table describes the controls on the front of the DMM8 U (UL, ULD): No. Description 1 to 6 Microphone or line inputs 7 Operating mode / System Control 8 Stereo output 9 Modulation display for stereo outputs 10 Stereo headphone output 11 Socket for headphone connection The parameters of the selected audio functions are changed using the controls.

5.3.1 Controls for input channels

The DMM8 U (UL, ULD) has 6 balanced input channels to connect low ohm, dynamic microphones or capacitor microphones and other signal sources, e.g. receivers for wireless microphones. There is a control for each input channel (1 to 6). Each input channel has a green LED ON and a red LED PEAK. ON is lit when the input channel is prioritized in automatic mode. If the auto- mix function is switched off, ON is lit continuously. PEAK is lit if the signal on an input channel comes close to the maximum modulation limit. In this case, the level should be reduced or the input sensi- tivity changed. Front controls

EQ 1.4 kHz / 11.3 kHz

Rotary knobs for inputs LED ON LED PEAKDescription DMM8 MANUAL 78 Theinputsensitivityismodiedusingthegainregulatorontherearofthe connected equipment.

5.3.2 Operating mode / SYSTEM CONTROL

The DMM8 U (UL, ULD) has numerous functions such as volume, tre- bles, bass, auto-mixer functions etc. These functions are selected on the SYSTEM CONTROL (7).

5.3.3 Control for stereo outputs

The control for the stereo outputs are labeled OUT (8). This control is used to change the following parameters on the output channel:

The modulation display (9) under the control for the stereo output channels shows the output level in dB.

5.3.5 Stereo headphone output

Both inputs and outputs can be picked up on the stereo headphone out- put (10). SYSTEM CONTROL Rotary knobs for outputs Modulation display Headphone outputDescription DMM8 MANUAL 79

5.4 Rear: Description of the controls

On the rear are the sockets for the input channels and output channels as well as the mains connection, etc. Figure 2: Rear of the DMM8 U (UL, ULD) *only available with DMM8 ULD **only available with DMM8 UL and DMM8 ULD The following table describes the controls on the rear of the DMM8 U (UL, ULD): No. Description 1, 5, 6, 10, 11, 15 Input channels 2, 4, 7, 9, 12, 14 Gain control 3, 8, 13 Phantom power 16 Stereo output channel, left 17 Stereo output channel, right 18 Stereo record output 19 Dante™: *only available with DMM8 ULD 20 Expansion sockets 21 Phoenix terminal (ground / remote control) 22 Serial control (RS232) 23 Modular jack (RJ-45) socket: **only available for DMM8 UL and DMM8 ULD 24 Remote level control Rear controls IN 1 IN 2 Off PHANT. PWR IN 3 IN 4 Off PHANT. PWR IN 5 IN 6 Off PHANT. PWR OUT L OUT R REC (OUT) IN - EXPANSION - OUT RS232DANTEUSB LAN

Figure 3: Input The 6 balanced input channels (1, 5, 6, 10, 11, 15) can be accessed via 3-pin Phoenix sockets. These are labeled IN 1 to IN 6. The input levels can be controlled with the rotary knobs IN 1 to IN 6 on the front panel. The assignment is labeled via socket IN 3 with:

• Pin 3 = b A switch for the phantom power and a gain control for every channel is located between two XLR sockets.

0 dB0 dB 57 dB57 dBDescription DMM8 MANUAL 81 The associated gain control is located next to every input channel (2, 4, 7, 9, 12, 14) to set the input level. The gain controls are equipped with integrated switch for the left side stop. The input level is set at 0 dB when the left end stop is reached By turning the control clockwise the gain can be increased by max. 57 dB.

5.4.3 Stereo master output

Figure 5: Stereo master output The device has one balanced master output (16, 17). It is accessible via two 3-pin XLR sockets. The outputs are labeled OUT L and OUT R. The OUT rotary knob on the front can be used to make settings on the out- put level of the stereo output.

5.4.4 Stereo record output

Figure 6: Stereo record output Two RCA jacks, labeled REC (OUT) (18) are available for connecting stereo recording equipment. The allocation of the individual channels to the unbal- ancedstereorecordingoutputcanbeconguredasdesired.

Serial control RS232Description DMM8 MANUAL 82 The RS232 socket (21) permits software updates to be carried out and to operate the device via an external control (e.g.: AMX). The pin assignment is as follows: Pin Function 1 GND 2 TxD 3 RxD

Figure 8: USB port The USB port (22) can be used to connect the device to a PC to perform rmwareupdatesandpermitexternalcontrol. The connection is established via a standard MS Windows driver. An Apple driver needs to be installed manually if required.

Figure 9: LAN port The LAN port (23) permits software updates to be carried out and to operate the device via an external control (e.g.: AMX). Remote control and remote diagnostics are also possible via a web server. USB port

RS232 USB LANDescription DMM8 MANUAL 83 This web server provides a simple and functional user interface that can be opened via a browser and that permits access via LAN infrastructure. Simultaneous operation via the front panel of the automixer and via the web server is possible: it is preferable for the inputs to be handled via the web server, however. The automixer is provided with protocol allowing it to be actuated via exter- nal software or wirelessly via APP. These applications can add considerably more functions depending on the programming type and scope, and provide a more complex graphic inter- face depending on the terminal.

5.4.8 Expansion/cascading

Figure 10: Expansion The 8-pin (RJ-45) modular jacks (20) can be used to connect up to 10 devic- es. The audio master and the status signal for the automix algorithm are trans- mitted. The audio transmission via cascading is carried out in 24Bit. This does not impair the noise values.

Figure 11: Phantom power The device is equipped with three switches for phantom power (3, 8, 13). Cascading OUT R REC (OUT) IN - EXPANSION - OUT RS232 USB LAN

Phantom power IN 1 IN 2 Off PHANT. PWR OnDescription DMM8 MANUAL 84 The corresponding slide switch activates the phantom power supply of +48 V for the inputs located on the left and right. Ground connection Figure 12: Phoenix terminal A Phoenix terminal connects the housing to the 0 V potential of the power supply. Only bridge the 0 V potential with the grounding (factory setting) or connect it to the central system ground, as otherwise the phantom power has no reference point and will not function. Analog control Figure 13: Phoenix terminal A linear 50 kΩ potentiometer at the VCA input, labeled "VCA" and "", allows you to vary the master volume. Figure 14: VCA VCA VCA Poti 50k lin.Description DMM8 MANUAL 85 The linear potentiometer is connected to the VCA input as shown above The resistance at the VCA input is changed by turning the potentiometer This value is input and the volume is changed accordingly The left setting signi- es0%whiletherightsettingsignies100%. The output level depends on the master control and the remote level control. The remote level control has the same effect on both masters

5.4.10 Dante™ network

Figure 15: Dante™ The DMM8 ULD is equipped with an 8-pin (RJ-45) modular jack labeled DANTE (19). All inputs and outputs are thereby automatically routed to the Dante™ network. The inputs are routed to the Dante™ network after signal processing (treble, bass,…) and after the automix algorithm as direct-out signals. The output masters are routed before the balance regulator, before volume out and before limiter to the Dante™ network as direct out signals. Settings must be made via the Dante™ receiver unit (e.g. mixing desk). When cascading automixers, note that only the channels available locally on an automixer can be transmitted via the Dante™ network. If in addition the inputs of another, cascaded device are required, this device must also have a standalone Dante™ interface. If multiple devices are also to be operated in the automix, these must also beconnectedviacascading:Specically,inadditiontothemastersignals, the control signals of the automix algorithm are also transmitted.

5.5 Automix algorithm

The unit's automix algorithm has 3 basic functions which assess the amount by which an input signal is to be attenuated and the output signal's output Dante™ network REC (OUT)

• Dynamic level adjustment

The master of all input channels is determined on an ongoing basis. This value is used as the reference value. If the input channel level is very close or over the reference value, this channel will be assessed as dominant and will be slightly attenuated. If the input channel level is well below the reference value, this is assessed as ambient noise and be severely attenuated. If a channel is no longer assessed as dominant, this falls at 1 dB/second and all other nondominant channels increase with the same constant so that the master output level remains constant. The upward adjustment of a channel takes between 3 ms and 5 ms.

With two microphones that are positioned close together there is the disadvantagethatcombltereffectsmayarisebycancelingthefrequency components To suppress these unnaturally dull or hollow signals, only the microphone channel with the highest level is assessed as dominant and switched on.

Permanently present interfering signals, whose amplitude are large enough to be assessed as dominant, but whose level and frequency changes are too low, are not assessed as dominant. Interfering signals such as noise from fans and air-conditioning units are recognized and not used as activation criteria for microphone channels.

5.6 Expansion/cascading

Up to ten devices can be cascaded if the number of inputs on a single de- vicearenotsufcient. Level adjustment Best Mic On Noise Detect Expansion for cascadingDescription DMM8 MANUAL 87 The device has two 100 MBit/s Ethernet ports. These are used to exchange control data and audio communication between cascaded devices. This means that an automixing system can be realized with:

• 10 stereo headphone outputs The master buses for OUT, REC-OUT and HEADPHONE are accessible to the entire system of cascaded devices. Every unit adds its input channels to the master buses, which are transferred via the Ethernet interface. Every unit can monitor and output the master buses. The automix algorithm also transfers its control data via this interface. This allows the automix algorithm to function system-wide.instALLAtion AnD connection DMM8 MANUAL 88 6 Installation and connection The following steps are required for installation and connection of the DMM8 U (UL, ULD):

3. Connecting microphones and accessories

4. Connect to the mains power supply

To install the device, proceed as follows: Step Description 1 Mount the device into your 19" rack using 4 appropriate rack bolts. Ensure that the device is securely screwed onto the rack. Alternatively, the device can be positioned on a stable sur- face.

6.2 Cascade devices (optional)

Caution: Risk of damage It is only permitted for this connection to be carried out by authorized, qual- iedpersonnel. Itisnotpermittedtoconnecttherstdeviceinthecascadetothelast device. For the cabling (cascading) of the individual devices via the expansion sock- ets, see 8.4 Cascading devices on page 117

6.3 Connecting microphones and accessories

Read the user instructions for your microphones and accessories for con- nection.instALLAtion AnD connection DMM8 MANUAL 89 Connect the microphones and accessories to the rear of the DMM8 U (UL, ULD) as follows: Step Description 1 Connect microphones and other signal sources (e.g. receivers for wireless microphones) to the IN inputs

Connect outputs OUT L and OUT R to a mixing desk or am- plier

Connect the RCA jacks on the stereo recording output REC (OUT) to a recording device

6.4 Connect to the mains power supply

Caution: Risk of damage Do not connect the unit to the power network until you have established all the audio connections! Ensure that the input voltage on the DMM8 U (UL, ULD) corresponds to the mains voltage. To connect the device to the mains, proceed as follows: Step Description 1 Connect the mains power supply cable to the appropriate socket on the rear panel of the DMM8 U (UL, ULD) 2 Plug the power supply cable into a mains socketfUnctionAL Description DMM8 MANUAL 90 7 Functional description

The device is controlled using the total of 9 rotary knobs on the front panel. These are labeled IN 1 to IN 6, SYSTEM CONTROL, OUT and HEADPHONE. The rotary knobs on the inputs are each surrounded by an LED ring with 15 yellow LEDs, one green LED and one red LED. The SYSTEM CONTROL rotary knobs and the rotary knobs on the outputs are surrounded by 15 yellow LEDs. The control display under the outputs has 6 green, one yellow and one red LED. The LED rings help to visualize the rotary knob setting or display signal levels.

7.2 Operation of the rotary knobs

Figure 16: Rotary knob

• Turn the rotary knob clockwise or counter-clockwise to make changes to inputs and outputs and function settings. These chang- es are shown on the LED ring around the rotary knob. The starting point and the increments on the LED ring will vary according to the function.

With the LEVEL function selected, the level set is displayed on the LED rings on the inputs and outputs.

The SYSTEM CONTROL rotary knob provides the option of selecting various functions on the device. Figure 17: SYSTEM CONTROL For selecting the functions and setting parameters, see 8.1 SYSTEM CONTROL: Changing parameters on the device on page 115

7.3.1 SYSTEM CONTROL functions

The following functions can be selected via the SYSTEM CONTROL:

The input channels have the following function controls:

7.3.3 Output channel modes

The output channels have the following function controls:

7.3.4 Functions of the stereo headphone output (monitoring output)

The exception to this is the HEADPHONE rotary knob. The stereo head- phone output is always Input channel modes Output channel modesfUnctionAL Description DMM8 MANUAL 93 located in the LEVEL mode, regardless of the SYSTEM CONTROL rotary knob setting.

Given below are explanations of the individual functions and their operation and effects.

-8 dB -7 dB -6 dB -5 dB -4 dB -3 dB -2 dB -1 dB 0 dB +1 dB +2 dB +3 dB TREBLE PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKEDSYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 95 All inputs and outputs can be controlled in TREBLE mode. Figure 21: Adjustment range of the LED ring for the TREBLE function The TREBLEraisesorlowerstheaudiosignal'streblerange.Thelterisde- signedasarstordertrebleshelvinglter.Thecut-offfrequencyis10kHz. The settings range from -14 dB to +14 dB. Only the upper middle LED lights up (0 dB) with linear adjustment. More LEDs light up on the left side as the rotary knob is turned further to the left. More LEDs light up on the right side as the rotary knob is turned further to the right.

Figure 23: BASS function All the input and output channels can be controlled in the BASS mode.

BASS PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 97 The BASSraisesorlowerstheaudiosignal'sbassrange.Thelterisde- signedasarstorderbassshelvinglter.Thecut-offfrequencyis100Hz. The settings range from -14 dB to +14 dB. Only the upper middle LED lights up (0 dB) with linear adjustment. More LEDs light up on the left side as the rotary knob is turned further to the left. More LEDs light up on the right side as the rotary knob is turned further to the right. Figure 24: Adjustment range of the LED ring for the BASS function

Figure 26: LOW CUT function All the input channels can be controlled in the LOW CUT function. The LOW CUT function suppresses low-frequency interference noise. The lowcutlterisdesignedasasecondorderhigh-passlter.Thecut-offfre-

LOW CUT PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 99 quency can be raised by turning the rotary knob in a clockwise direction and lowered by turning it counter-clockwise. The settings range from 0 Hz (no effect) to 300 Hz (severe attenuation). One LED is illuminated at 0 Hz, while the entire LED ring is illuminated at 300 Hz. Figure 27: Adjustment range of the LED ring for the LOW CUT function

0-20 Hz40 Hz60 Hz80 Hz100 Hz120 Hz140 Hz300 Hz280 Hz260 Hz240 Hz220 Hz200 Hz180 Hz160 Hz LOW CUTfUnctionAL Description DMM8 MANUAL 100 The adjustable increments are equal to 20 Hz per click and also correspond to one LED. Figure 28: Adjustment range for the LOW CUT function

LIMITER PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 101 Turning the rotary knob in a clockwise direction increases the effect, while turning it counterclockwise dampens the effect. The settings range from +20 dBu to -25 dBu. One LED is illuminated at +20 dBu, while the entire LED ring is illuminated at -25 dBu. Figure 30: Increments on the LED ring for the LIMITER function The adjustable increments are equal to 3 dB per click and also correspond to one LED. Figure 31: Adjustment range for the LIMITER function

Figure 32: COMPRESSOR function All the input channels can be controlled in the COMPRESSOR mode. Thecompressorratioisxed.Ithasavalueof1:2.Turningtherotaryknob in a clockwise direction increases the effect, while turning it counterclock- wise dampens the effect. The settings range from +20 dBu to -25 dBu. One LED is illuminated at +20 dBu, while the entire LED ring is illuminated at -25 dBu. Figure 33: Increments on the LED ring for the COMPRESSOR function COMPRESSOR PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROL

AUTOMIXING PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 104 All the input channels can be controlled in the AUTOMIXING mode. Figure 36: Adjustment range for the AUTOMIXING function The automatic mixing functions for the relevant channel are switched on by turning a rotary knob in the clockwise direction. (Entire LED ring is illumi- nated). Turning the rotary knob counterclockwise switches the automatic mixing function off. (Only one LED is illuminated) Pressing the rotary knob also switches the function on or off.

AUTOMIXING COMPRESSOR LIMITER LOW CUT BASS TREBLE LEVEL LOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 105 The PRIORITY mode allows you to select which input channel will function as the priority channel. The priority channel then receives a 6 dB advantage in the signal detection in connection with the AUTOMIXING mode. Figure 38: Adjustment range for the PRIORITY function The function for the relevant channel is switched on by turning a rotary knob in the clockwise direction. (Entire LED ring is illuminated). Turning the rotary knob counter-clockwise switches the functions off (only one LED is illumi- nated). Pressing the rotary knob also switches the function on or off. Switching on the PRIORITY function on an input channel turns off the func- tion on the previously activated channel.

AUTOMIXING COMPRESSOR LIMITER LOW CUT BASS TREBLE LEVEL LOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 106 all the output channels to be controlled. Figure 40: Increments on the LED ring for the PAN / BALANCE function Balance means assignment of a main signal to the output. Only the upper middle LED lights up (0 dB) with linear adjustment. This LED (0 dB) is also considered to be the starting point for a clockwise or count- er-clockwise rotation. More LEDs light up on the left side as the rotary knob is turned further to the left. More LEDs light up on the right side as the rotary knob is turned further to the right. If no further output is required from the left output channel of a stereo out- put, turn the balance controller to the right. In mono inputs, the signal is assigned equally to stereo left and right as standard. If the input is to be assigned to the left only, turn the rotary knob for the input to the left when the PAN function is active. The adjustable increments are equal to 6 dB per click and also correspond to one LED.

Figure 41: DELAY function The DELAY function can be used to modify the OUT output. This function can be used to delay the left output over the right. Figure 42: Increments on the LED ring for the DELAY function The settings range from 0 m to 75 m. One LED is illuminated at 0 m, while the entire LED ring is illuminated at 75 m. The adjustable increments are equal to 1 m per click. 5 m is equal to one LED. DELAY PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROL

Figure 43: ROUTING TO REC function All the input channels can be controlled in the ROUTING TO REC mode. Figure 44: Adjustment option of the ROUTING TO REC function The function for the relevant channel is switched on by turning the rotary knob in the clockwise direction (entire LED ring is illuminated). Turning the rotary knob counter-clockwise switches the function off (only one LED is illuminated). Pressing the rotary knob also switches the function on or off. Switching this on sets the input channel to the OUT master bus. ROUTING TO REC PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROL

Figure 45: ROUTING TO USB function All the input channels can be controlled in the ROUTING TO USB mode. Figure 46: Adjustment range for the ROUTING TO USB function The function for the relevant channel is switched on by turning the rotary knob in the clockwise direction (entire LED ring is illuminated). Turning the rotary knob counter-clockwise switches the function off (only one LED is illuminated). Pressing the rotary knob also switches the function on or off. Switching this on sets the input channel to the USB OUT master bus. ROUTING TO USB PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROL

Figure 47: EQUALIZER function The function EQUALIZER HIGH and EQUALIZER LOW affects the output OUT: The adjustment is the same for the left and right channel. If the EQUALIZER HIGHfunctionisselected,thetopspeciedvalueis actuated; if the EQUALIZER LOWisselected,thebottomspeciedvalueis actuated. E.g.: At EQ 250 Hz / 2kHz, the frequency 250 Hz is actuated in the EQUALIZER LOW function. In the EQUALIZER HIGH function,, the frequen- cy 2 kHz is actuated. The room equalization can be performed in 12 bands. The raising or lower- ing of the bands is performed by the 6 rotary knobs for the input channels. The adjustment range extends from +/-14 dB. Only the upper middle LED lights up with linear adjustment. More LEDs light up on the left side as the rotary knob is turned EQUALIZER PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROL PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 111 further to the left. More LEDs light up on the right side as the rotary knob is turned further to the right. Figure 48: Increments on the LED ring for the EQUALIZER function The adjustment takes place in 2 dB increments.

PRESET PRIORITYPAN / BALANCEDELAYROUTE TO RECROUTE TO USBEQUALIZER LOWEQUALIZER HIGHPRESETIN USB / DANTEAUTOMIXINGCOMPRESSORLIMITERLOW CUT BASS TREBLELEVELLOCKED SYSTEM CONTROLfUnctionAL Description DMM8 MANUAL 113 To do this, the PRESET function is selected on the SYSTEM CONTROL. In addition to the 6 device presets, there is also a work preset: All changes in the settings initially only have an effect on that preset. To store changes permanently, the work preset must be stored under one of the available device presets. Loading a device preset overwrites the work preset and makes it active immediately. After re-starting the device, the last work preset becomes active with the last settings made. The6inputrotaryknobsprovideaccesstothepresets,andtheircongura- tion. Figure 51: PRESET congurations IfonlyLED1lightsonanLEDring,thisstoragelocationisnotcongured (see Figure 51, encoder IN 3 ). If all LEDs and the red PEAK LED are lit, this storage location is assigned and selected (see Figure 51, encoder IN 1 / USB L). If only LED 1 and the red PEAK LED are on, this storage location is assigned but not selected (see Figure 51, encoder IN 2 / USB R). For more information, see 8.7 Using presets on page 118.

Figure 52: LOCKED function In LOCKED mode the rotary knobs or the entire unit are protected against improper use by means of locking. For more information, see 8.11 Activate/deactivate LOCKED on page

To change the parameters on the device, proceed as follows: Step Description

Turn to the required function on the SYSTEM CONTROL rotary knob, turning the rotary knob until the LED is lit at the required function.

Modify the outputs with the selected function using the OUT rotary knob The stereo record output does not have any setting options. 5 minutes after the last change, the SYSTEM CONTROL rotary knob goes back to the LEVEL mode. 1 minute after the last change, the set value is saved automatically.

• Selecttheamplicationoftheinputsignalsbetween0dB and +57 dB.

• Higheramplicationoftheinputsignalsissuitablefor microphones with a low output level.

• Loweramplicationisrecommendedformicrophoneswith a high output level.

• If you are using capacitor microphones, determine which supply voltage or supply devices these require.

• If your capacitor microphones are suitable for phantom power, switch the phantom power on. To do this, switch the PHANT. PWR slider switch to ON. 2 Switch on the device with the main power switch Caution: Risk of damage When using wireless microphones, switch off the phantom power on the in- puts where you have connected a receiver to avoid damage to the receiver.

8.3 Monitoring the inputs/outputs

To monitor the inputs and outputs, proceed as follows: Step Description

Hold down the HEADPHONE rotary knob and press to select one or more monitoring source rotary knob 2 Change monitoring source by pressing on another monitoring source.

• The previous monitoring source is switched off. With inputs, multiple sources can be monitored. The output can be monitored individually and in stereo. The REC (OUT) output cannot be monitored.operAting the Device DMM8 MANUAL 117

8.4 Cascading devices

Caution: Risk of damage It is only permitted for this connection to be carried out by authorized, qual- iedpersonnel. Itisnotpermittedtoconnecttherstdeviceinthecascadetothelast device. To cable the individual devices with the expansion sockets, proceed as follows: Step Description 1 Cascade the devices as follows using CAT5+ connection cables: OUT R REC (OUT) IN - EXPANSION - OUT RS232 USB LAN

For cascading we recommend using only cables from the AKG range of accessories. All devices are equivalent for the user in terms of their function and re- sponse. In cascading, all functions of the individual devices are retained.

8.5 Feed via USB and Dante™

8.5.1 Processing the feed

To feed the input signals via USB or Dante™, proceed as follows: Feed via USB and Dante™operAting the Device DMM8 MANUAL 118 Step Description

• The 6 input controls are switched over for operation.

• The LEDs IN USB and IN USB/DANTE are permanently lit

• Changes to the input controls no longer affect the 6 analog inputs; only digital inputs 7 to 12

• The remaining operation is the same as on the analog level The inputs from USB Port are assigned to channels 7 (IN1 / USB L) and 8 (IN 2 / USB R), for devices without Dante™ interface the digital inputs 9 to 12 are without function and inactive. For devices with Dante™ interface, the remaining digital input channels from channel 9 are assigned as follows:

• etc. All digital inputs have the same signal processing functionalities as the analog inputs.

8.6 Activating phantom power

Only bridge the 0 V potential with the grounding (factory setting) or connect it to the central system ground, as otherwise the phantom power has no reference point and will not function.

The presets on the DMM8 U (UL, ULD) function in a very similar way to the presets on a car radio.

8.7.1 Selecting a preset

To select a preset, proceed as follows: PRESEToperAting the Device DMM8 MANUAL 119 Step Description

• An acoustic signal (beep) is sounded. 3 Release the rotary knob after the beep

• Device preset is loaded to work preset.

• Settings for the selected device preset are active immedi- ately (all LEDs lit).

8.7.2 Programming a preset

To program a preset, proceed as follows: Step Description

With SYSTEM CONTROL, select the PRESET function 2 Press input rotary knobs (1 to 6) for between 3 and 5 seconds

• An acoustic signal (beep) is sounded. 3 Release the rotary knob after the beep

• The current settings from the work preset are stored under the selected device preset (all LEDs lit).

8.7.3 Deleting a preset

To delete a preset, proceed as follows: Step Description

With SYSTEM CONTROL, select the PRESET functionoperAting the Device DMM8 MANUAL 120 Step Description 2 Press the rotary knob for the corresponding input or output for between 8 and 10 seconds

• An acoustic signal (beep) is sounded. 3 Release the rotary knob after the beep

• The device preset is deleted and cannot be selected (emp- ty storage location, LED 1 lit).

Inputs and outputs can be switched to MUTE. Proceed as follows: Step Description

• The corresponding channel is muted.

• AllLEDspreviouslylitwillash.

• The current volume is stored. The MUTE function cannot be used for the HEADPHONE rotary knob!

• MUTE function for the corresponding channel is deactivat- ed.

• The volume previously stored is applied.

All inputs can be routed to the OUT output. Proceed as follows: Step Description

Press and hold the OUT rotary knob Press the rotary knob of the required input

• The corresponding input is routed to the OUT master bus.

8.9.2 For multiple inputs

To route multiple inputs to OUT, proceed as follows: Step Description

Press and hold the OUT rotary knob Press the rotary knob of the required inputs

• The corresponding inputs are routed to the OUT master bus.

8.10 Deactivating ROUTING TO OUT

To deactivate the ROUTING TO OUT function, proceed as follows: ROUTING TO OUToperAting the Device DMM8 MANUAL 122 Step Description 1 Press the rotary knob of the required input

• ROUTING TO OUT is deactivated for the corresponding input.

8.11 Activate/deactivate LOCKED

The following elements can be locked using the LOCKED function:

To lock the SYSTEM CONTROL rotary knob, proceed as follows: Step Description

Press the SYSTEM CONTROL rotary knob for longer than 3 seconds

• The LOCKED LED is lit.

• Turning the rotary knob has no function.

• All other rotary knobs are in LEVEL mode and can still be operated.

8.11.2 Unlocking the SYSTEM CONTROL rotary knob

To unlock the SYSTEM CONTROL rotary knob, proceed as follows: Step Description

Press the SYSTEM CONTROL rotary knob for longer than 3 seconds

• The rotary knob lock is removed.

• The LOCKED LED is no longer lit.

• The rotary knob is in the basic LEVEL position. LOCKED Lock rotary knob Unlock rotary knoboperAting the Device DMM8 MANUAL 123

8.11.3 Locking the complete unit

To lock the complete unit, proceed as follows: Step Description

Press the SYSTEM CONTROL rotary knob at the same time as the OUT rotary knob for longer than 3 seconds

• The LOCKED LED is lit.

• The original settings are stored.

• Turning the rotary knob has no function.

• All other rotary knobs are in LEVEL mode and can still be operated.

8.11.4 Unlocking the complete unit

To unlock the complete unit, proceed as follows: Step Description

Press the SYSTEM CONTROL rotary knob at the same time as the OUT rotary knob for longer than 3 seconds

• The rotary knob lock is removed.

• The LOCKED LED is no longer lit.

• The rotary knobs are in the basic LEVEL position.

8.11.5 Unlocking individual channels

To unlock individual channels, proceed as follows: Lock unit Unlock unit Unlock channelsoperAting the Device DMM8 MANUAL 124 Step Description 1 Lock the complete unit, to do this press the SYSTEM CONTROL rotary knob at the same time as the OUT rotary knob for longer than 3 seconds

• The LOCKED LED is lit.

• The original settings are stored.

• Turning the rotary knob has no function.

• All other rotary knobs are in LEVEL mode and can still be operated. 2 Remove the lock on the required channel by pressing the rotary knob for the required channel for longer than 3 seconds

8.11.6 Locking individual channels

Tolockindividualchannels,thecompleteunitislockedrstandthelockis then removed for all channels that are not to be locked. To lock individual channels, proceed as follows: Step Description 1 Lock the complete unit, to do this press the SYSTEM CONTROL rotary knob at the same time as the OUT rotary knob for longer than 3 seconds

• The LOCKED LED is lit.

• The original settings are stored.

• Turning the rotary knob has no function.

• All other rotary knobs are in LEVEL mode and can still be operated. 2 Remove the lock on all channels by pressing the rotary knob for the required channels for longer than 3 seconds. The status conditions that were set before the channels or the complete unit was locked, are retained even after the DMM8 U (UL, ULD) is switched of and back on! Lock channelsoperAting the Device DMM8 MANUAL 125

8.12 Copying conguration data

The copy function can be used to copy individual or multiple settings (LEVEL, TREBLE, BASS, LOWCUT, LIMITER and COMPRESSOR) on an input to one or more other inputs.

8.12.1 Copying individual values

To copy individual values from one channel to one or more other channels, proceed as follows: Step Description

Select the required function on the SYSTEM CONTROL rotary knob 2 Press the rotary knob with the value to be copied, then straight away press the rotary knob up to which the copy process is to be carried out 3 Keep both rotary knobs pressed down (approx. 4 seconds) until an acoustic signal is sounded (beep) and the affected LEDringsashoncebriey.

• Value was transmitted to the selected channels. The copying process is applied to all rotary knobs that located between the two selected knobs.

8.12.2 Copying all values

To copy all values from one channel to one or more other channels, proceed as follows: Step Description 1 Press the rotary knob with the values to be copied, then straight away press the rotary knob up to which the copy process is to be carried out Copy congurationsoperAting the Device DMM8 MANUAL 126 Step Description 2 Keep both rotary knobs pressed down (approx. 8 seconds) until an acoustic signal is sounded (beep beep) and the affect- edLEDringsashoncebriey.

• Values were transmitted to the selected channels. The copy process is possible in both directions (IN 1 to IN 6 and IN 6 to IN 1). The following diagrams visualize the copy process. Figure 53: Select rotary knobs (source) Figure 54: Dene copy range (target) Figure 55: Keep the rotary knobs pressed down

8.13 Resetting the factory settings

To reset the factory settings for the entire device, proceed as follows: Step Description 1 Switch on the device Wait until the start sequence of the automixer is complete (approx. 15 seconds).

Press the SYSTEM CONTROL rotary knob and keep pressed until step 5 3 Switch off the device at the mains 4 Switch the device back on after a short waiting time Wait until the start sequence of the automixer is complete (approx. 15 seconds).

• The device's factory settings have now been restored and anewsystemcongurationcannowbesetup.

WARNING: Risk of electric shock

There are unprotected contacts and cables within the unit that could cause serious injury from electric shock on contact.

• Theunitisonlypermittedtobeopenedbyauthorized,qualied personnel for troubleshooting purposes.

PROBLEM POSSIBLE CAUSE REMEDY

No sound Power supply cable is not connected to unit Connect power supply cable to unit Power switch off Turn power switch to on position Deviceisnotconnectedtoamplier Connectoutputchanneltoamplier Microphone or auxiliary equipment not connected to unit Connect microphone or auxiliary de- vice to unit Volume control set to minimum Turn up volume control Volume controls set to MUTE Cancel MUTE by pressing the rotary knob Pre-amplicationnotsetcorrectly Set gain control on rear panel to cor- rectpre-amplication Phantom power is switched off Switch on phantom power for con- denser microphone External potentiometer set to minimum Turn up external potentiometer No sound with sinu- soidal feed Automix algorithm suppressing con- stant signal Exclude channel from automix algo- rithmtroUbLeshooting DMM8 MANUAL 130

PROBLEM POSSIBLE CAUSE REMEDY

Distorted signal repro- duction Pre-amplicationnotsetcorrectly Set gain control on rear panel to cor- rectpre-amplication Volume control turned up too far Turn down volume Input signal level too high Reduce input signal If the error persists despite these instructions, contact AKG Acoustics GmbH or your AKG dealer immediate- ly.DMM8 MANUAL 131

PROBLEM POSSIBLE CAUSE REMEDY

Distorted signal repro- duction Pre-amplicationnotsetcorrectly Set gain control on rear panel to cor- rectpre-amplication Volume control turned up too far Turn down volume Input signal level too high Reduce input signalINHALT DMM8 MANUAL 132

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

EQ 1.4 kHz / 11.3 kHz

8.11 Activer/Désactiver LOCKED

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help. 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. Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCCregulations.Changesormodicationsnotexpresslyapprovedbythepartyresponsible for compliance could void the user’s authority to operate this equipment. Actualización Estemanualpuedeserobjetodemodicacionessinprevioaviso,ynosuponeningunaobli- gación para la empresa AKG Acoustics GmbH. Versión 1.0 Fecha de publicación Julio de 2015/Alemania 07/15/5061691generALiDADes DMM8 MANUAL 197 1 Generalidades

EQ 1.4 kHz / 11.3 kHz