D-407F - Pregnant ONKYO - Free user manual and instructions

Product Type	2-way bass reflex speaker system
Impedance	6 Ω
Maximum Input Power	180 W
Output Sound Pressure Level	85.5 dB/W/m
Frequency Response	35 Hz - 40 kHz
Crossover Frequency	3000 Hz
Cabinet Capacity	30.3 L
Speaker (Woofer)	13 cm A-OMF cone x 2
Speaker (Tweeter)	2.5 cm soft dome
Dimensions (W x H x D)	185 x 930 x 274 mm
Weight	14.5 kg
Magnetic Shielding	Yes, for use near TV
Accessories Included	2.5 m speaker cable, cork spacers x4, stand attachment, screws
Recommended Amplifier Impedance	6 Ω capable
Placement	Rigid, level surface; avoid direct sunlight, humidity
Speaker Grille	Detachable, pull gently from edges
Cabinet Material	Wood with high-quality covering (natural wood finish available)
Connection	Twist core wires, secure screw terminals; observe polarity
Safety Precautions	Turn off amplifier before connection; avoid short circuits
Stand Attachment	300 mm stand attachment included; use M4 screws

Frequently Asked Questions - D-407F ONKYO

What is the impedance of the Onkyo D-407F speaker?

The nominal impedance is 6 Ω. Use only amplifiers capable of handling this impedance.

How should I connect the speaker cables?

Turn off the amplifier, strip 15 mm of plastic, twist the core wire, and insert into the terminal. Tighten the screw securely. Ensure correct polarity (red to red, black to black). Avoid short circuits.

Can I use the D-407F near a TV?

Yes, the speaker has magnetic shielding to minimize picture distortion. If discoloration occurs, turn off the TV for 15-30 minutes to activate self-demagnetization.

How do I remove the speaker grille?

Hold the bottom edge of the grille with both hands and pull gently toward you. Then do the same for the top edge. To reattach, push the corner pins into the holes.

What is the recommended placement for best sound?

Place speakers on a rigid, level surface. Avoid direct sunlight and humidity. For stereo, position them at the base of an equilateral triangle with the listening position at the apex. Move closer to walls for stronger bass.

What are the dimensions and weight of the D-407F?

Dimensions: 185 x 930 x 274 mm (W x H x D). Weight: 14.5 kg.

How should I clean and maintain the speakers?

Wipe the cabinet with a dry, soft cloth. For grilles, use a soft brush or hand vacuum. Avoid furniture polishes and harsh cleaners. Natural wood models have a unique grain; treat with care.

What type of speakers does the D-407F use?

It uses two 13 cm A-OMF cone woofers and a 2.5 cm soft dome tweeter in a 2-way bass reflex design.

How do I mount the stand attachment for stability?

Attach the included 300 mm stand attachment to the bottom back of the cabinet using the supplied M4 x 35 mm screws. For additional safety, secure the cabinet to a wall with a cord and cup hooks (not included).

What is the maximum input power and frequency response?

Maximum input power: 180 W. Frequency response: 35 Hz - 40 kHz.

USER MANUAL D-407F ONKYO

Thank you for your purchase of the Onkyo speaker system.

Please read this manual thoroughly before using it.

Following the instructions in this manual will enable you to obtain optimum performance and listening enjoyment from your new speaker system.

Please retain this manual for future reference.

使用手册

Precaution on use En-2

使用注意事項 Ct-2

Connection En-2

連接 Ct-2

Mounting the stand

attachment En-3

安装站立支架附件 Ct-3

Placement En-3

安放 Ct-3

Attaching and detaching

the speaker grilles En-3

揚聲器前格板的安裝和拆除 Ct-3

Use with a TV set En-4

作為電視機的外接揚聲器

使用時 Ct-4

Speaker care En-4

揚聲器的維護保養 Ct-4

Specifications En-4

規格 Ct-4

Before using this unit

• The speaker cabinet is made of wood and is therefore sensitive to extreme temperatures and humidity. Avoid placing the speaker systems in locations subjected to direct sunlight, or in smoky or in humid places, such as near an air conditioner, humidifier, bathroom, or kitchen. Doing so may result in damage to the speaker.
• Place the unit on a rigid, level surface. Placing it on a slanted surface or weak base not only may cause the unit to fall, but also results in decreased sound quality.
• Be sure to turn off your amplifier before connecting the speaker system. Connecting them with the amplifier's power on may result in damage to the amplifier or the speaker system.
• Keep water or other liquids away from the unit. If water is spilled into the unit, not only the unit but also the speakers themselves may be damaged.

Precaution on use

• This speaker system can handle the specified input power when it is used for ordinary music reproduction. If the following abnormal signals are fed to the speaker, however, an overcurrent may flow in the internal circuits, causing burning or breakage of the wires even if the input power is below the specified rating.
• Noise produced when FM station is not tuned in
• Sound produced when fast-forwarding cassette tape deck
• High-frequency sound generated by an oscillator, an electronic musical instruments, etc.
• Oscillating amplifier signals
• Special test signals produced by audio checking CD, etc.
• Sound produced when connecting or disconnecting audio connection cables (Always turn off the amplifier's power before connecting or disconnecting cables.)
• Howling when a microphone is used
• Do not place magnetic objects such as screwdrivers and iron parts near the tweeter since they use speakers with strong magnets. Otherwise, the objects may be attracted, causing injury or damaging the diaphragm.

Connection

• Turn the sound volume to the minimum and disconnect the power cord from the amplifier before connecting the speaker cables.
• The nominal impedance of this speaker system is 6 . Use only amplifiers capable of handling this impedance.
• Use the supplied speaker cables to connect between speaker's input terminals and the amplifier's speaker terminals as illustrated below.
• Connect the speaker cables securely to the terminals, with the core wires twisted properly. In this case, make sure that the core wires do not touch each other. Note that a short circuit in core wires may result in damage to the amplifier.

Connecting to AV amplifier

Before turning on the amplifier's power switch:

• Make sure that the positive (+) and negative (−) speaker cables do not contact each other. Otherwise, a short-circuit may occur, causing damage to the amplifier.
• Be sure to connect the speaker cables with correct polarity (connect the speaker's positive (+) and negative (−) binding posts with the amplifier's corresponding speaker terminals). Reversed polarity results in impaired bass-range reproduction, causing mislocalization of the sound image. Also, be sure to connect the Right and Left speakers with the amplifier's corresponding speaker terminals.
• Pull lightly on the speaker cables to ensure that they are connected firmly.

Mounting the stand attachment

A set of tip-resistant accessories is included with shipment: 300mm long stand attachment and M4 x 35mm screws. Mount the stand attachment in the bottom of backside the cabinet using a screwdriver.

Caution:

• Allow for secure placement of the speaker; the cabinet is very tall and tends to fall down under unstable conditions. Do not place it on an unstable location such as shaky or sloping table, platform or thick carpet. Otherwise it could cause injury when dropping or falling.
• You can secure the cabinet to the wall, etc. by using a durable cord or chain along with cup hooks: Find a hole on the either side of backside the cabinet, and screw into each hole the cup hook of about 4mm in diameter and 15mm long, and then secure the cabinet to the wall, etc. with the cord or chain.

- Exercise due care to install and secure the cabinet; the sustainability of the screws may vary depending on the quality and/or location of the wall where they are tightened. You may want to consult with a professional installer.

Placement

D-407F Front speaker system

The sound quality a speaker system reproduces varies greatly depending on the construction and area of the room where it is installed, as well as the location and size of the furniture. For better-quality sound, observe the following precautions.

• Avoid placing the speaker system on an elevated object such as on concrete blocks. Instead, place it on a rigid floor surface with minimal vibration. Also note that high-quality bass cannot be obtained if the speaker system is unstably positioned. Generally speaking, placing the speaker system on several small-diameter supports results in better bass than placing it directly on the installation surface. Moreover, if you feel the bass reproduced by the system is too weak, move the speaker system closer to the wall behind it. You can thus control the strength of the reproduced bass by the position of the speakers.
• In many rooms, the furniture and wall affect the reproduced sound quality. For stereo sound reproduction, placing the Right and Left speakers in the same condition produces the best results. If they are placed in extremely different conditions, the Right- and Left-channel balance will be adversely affected.
• The ideal placement of the speaker system is as follows: Imagine an equilateral triangle and position the Right and Left speakers on both ends of the base. The ideal listening position is at or slightly to the rear of the triangle apex.
• Glazed doors or surrounding walls in front of the speaker system may cause the resonance of specific frequency ranges due to reflected sound. To eliminate this resonance, place some sound-absorbing material such as a thick curtain in front of the doors or walls.

Attaching and detaching the speaker grilles

This speaker system uses detachable grilles. Use the following method to attach or detach the grilles.

1. While holding the bottom edge of the speaker grille with your both hands, pull it gently toward you to remove the bottom of the grille.
2. In the same way, gently pull the upper edge of the speaker grille toward you to remove it from the main unit.
3. To replace the grill, push the projections at the corners into the grille plug holes on the speaker cabinet.

Use with a TV set

In general, Braun tubes used for color television sets, etc. are extremely sensitive and can be affected even by the magnetism of the earth. If a speaker system is used near them, therefore, discoloration or distortion of pictures will occur. To allow use with color television sets, etc., this speaker system is provided with magnetic shielding.

Even so, discoloration may still result, depending on the installation environment. If discoloration occurs, turn off the power of the television set, wait for 15 to 30 minutes and then turn it on again. This activates the self-demagnetizing function of the television set, improving the display condition. If discoloration persists even after performing this remedy, move the speaker apart from the television set. Discoloration may also be caused when a magnet or other magnetizing object exists near the television because of the combined effect.

Speaker care

Your Onkyo speakers are finished with a high quality covering that serves to protect the wood speaker cabinet.

Wipe the cabinet periodically with a dry, silicon-embedded or plain soft cloth.

The covering may be cleaned with a soft cloth moistened with water and a mild soap. Avoid the use of furniture polishes or harsh cleansers. Use a soft brush or hand vacuum cleaner to remove dust and lint from the grille material.

Natural wood finished cabinets

The cabinets are finished with a natural wood surface. They have a unique wood grain pattern. Your cabinets have their own raw beauty and uniqueness which is unlocked from the tree; this is depicted by the cross-grain patterns with dark and light coloring. You can enjoy Onkyo's craftsmanship not only when designing for the best sound quality, but to assimilate natural blessings for the visual senses. The paint and finishing work of the cabinets are conducted under the strictest quality control standards.

Specifications

Type: 2-way bass reflex

Impedance: 6 Ω

Maximum input power: 180 W

Output sound pressure level: 85.5 dB/W/m

Frequency response: 35 Hz - 40 kHz

Crossover frequency: 3000 Hz

Cabinet capacity: 30.3 L

Speaker (woofer): 13 cm A-OMF cone x 2

Speaker (tweeter): 2.5 cm soft dome

Dimensions: 185 (W) x 930 (H) x 274 (D) mm

(Overall dimensions)

Weight: 14.5 kg

Accessory: 2.5 m speaker cable x 1

Cork spacer x 4

Stand attachment x 1

Screw (M4 x 35 mm) x 2

Instruction manual

Others: Magnetic shielding

Specifications and appearance are subject to change for improvement without prior notice.

In catalogs and on packaging, the letter added to the end of the product name indicates the color of the D-407F. Specifications and operation are the same regardless of color.

使用本系統之前

18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.

Tel: [phone] Fax: [phone] http://www.onkyousa.com

ONKYO EUROPE ELECTRONICS GmbH

Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY

Tel: [phone] Fax: [phone] http://www.onkyo.net

ONKYO EUROPE UK Office

Suite 1, Gregories Court, Gregories Road, Beaconsfield, Buckinghamshire, HP9 1HQ

UNITED KINGDOM Tel: [phone] Fax: [phone]

ONKYO CHINA LIMITED

Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,

N.T., HONG KONG Tel: [phone] Fax: [phone]

http://www.onkyo.com/

D0408-1