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

Product Type	2-way bass reflex bookshelf speaker
Brand	Onkyo
Model	D-407M
Impedance	6 Ω
Maximum Input Power	150 W
Output Sound Pressure Level	85.5 dB/W/m
Frequency Response	63 Hz - 40 kHz
Crossover Frequency	8000 Hz
Cabinet Capacity	4.7 L
Speaker (Woofer)	13 cm A-OMF cone
Speaker (Tweeter)	2.5 cm soft dome
Dimensions (W x H x D)	172 x 269 x 169 mm
Weight	3.3 kg
Magnetic Shielding	Yes, for use near TV sets
Accessories Included	8 m speaker cable, cork spacers x4, cushioning pads x4, instruction manual
Mounting Options	Wall-mountable via keyhole slots; bottom and rear M5 screw holes (60 mm pitch) for stands
Grille	Detachable
Recommended Amplifier Impedance	6 Ω compatible only
Care Instructions	Wipe with dry or silicon-embedded cloth; use mild soap for covering; brush vacuum for grille
Safety Precautions	Avoid extreme temperatures/humidity; turn off amplifier before connecting; keep liquids away

Frequently Asked Questions - D-407M ONKYO

What is the nominal impedance of the Onkyo D-407M speakers?

The nominal impedance is 6 Ω. Use only amplifiers that support this impedance.

How should I connect the speaker cables to the amplifier?

First, turn off the amplifier. Strip 15 mm of insulation, twist the core wires, loosen the screw, insert the wire fully, and tighten the screw. Ensure correct polarity (+/-) and that core wires do not short.

Can I wall-mount the D-407M speakers?

Yes, they have keyhole slots and included cushioning pads. Use screws with head diameter <10 mm and shank <4 mm. Ensure the wall can support the 3.3 kg weight.

How do I remove and reattach the speaker grille?

Hold the bottom edge and pull gently to remove the bottom, then pull the top edge. To reattach, press the corner projections into the grille plug holes on the cabinet.

Can I use these speakers near a TV?

Yes, they have magnetic shielding to minimize discoloration. If discoloration occurs, turn off the TV for 15-30 minutes to activate self-demagnetization.

What is the maximum power handling of the D-407M?

The maximum input power is 150 W. However, avoid abnormal signals (e.g., FM noise, oscillator tones) that could cause damage even at lower power.

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

Dimensions: 172 x 269 x 169 mm (WxHxD). Weight: 3.3 kg.

What type of speaker drivers does the D-407M use?

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

How should I clean and maintain the speakers?

Wipe the cabinet with a dry, silicon-embedded or soft cloth. For the covering, use a damp cloth with mild soap. Clean the grille with a soft brush or hand vacuum. Avoid harsh cleaners.

What accessories come with the D-407M?

Includes: 8 m speaker cable, 4 cork spacers, 4 cushioning pads, and an instruction manual.

USER MANUAL D-407M 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

Placement En-3

安放 Ct-3

Installation using

commercially-available

stands and fixtures En-3

用市場銷售的支架和夾具進行

安裝時 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-3

作為電視機的外接揚聲器

使用時 Ct-3

Speaker care En-3

揚聲器的維護保養 Ct-3

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

Speaker terminals of the 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.

Placement

Using as a surround speaker

Enhance the sensation of being at a live performance by giving three-dimensional sound movement to the sound effects. Place the surround speakers at the side of the listener or at a position diagonally from the listener. Ideally, speakers should be placed symmetrically.

Place these speakers so that their height is 1 meter higher than that of the listener's ears.

The speaker cabinet is made of wood and sensitive to extreme temperatures and humidity. Avoid placing the speaker system in locations subjected to direct sunlight or in humid places such as near an air conditioner, bathroom, or kitchen.

Installing on the wall

If the speakers are to be wall-mounted, make sure that the walls are strong enough to support the speaker's weight. The weight that mounting screws can support varies greatly depending on the wall material and the position of the reinforcing ribs embedded in the wall. Use the thickest and longest possible mounting screws with mounting screw head diameters less than 10 mm and shank diameters less than 4 mm (consult with your interior designer or contractor).

Attach the supplied cushioning pads as shown to wall-mount the speaker securely.

Installation using commercially-available stands and fixtures

The surround speaker bottom and rear are equipped with screw holes so that you can attach commercially-available stands or mounting fixtures for a variety of mounting options. (Two M5 screw holes, 60 mm pitch on the bottom and the rear.)

Note:

When attaching an accessory item to a speaker, be careful of the length of the screws used. Use only screws that provide the required strength with a screw length between 3 and 11 mm.

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: 150 W

Output sound pressure level:85.5 dB/W/m

Frequency response: 63 Hz - 40 kHz

Crossover frequency: 8000 Hz

Cabinet capacity: 4.7 L

Speaker (woofer): 13 cm A-OMF cone

Speaker (tweeter): 2.5 cm soft dome

Dimensions: 172 (W) x 269 (H) x 169 (D) mm

(Overall dimensions)

Weight: 3.3 kg

Accessory: 8 m speaker cable

Cork spacer x 4

Cushioning pad x 4

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-407M.

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