Onkyo D-407M instruction manual Before using this unit, Precaution on use Connection, En-2

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

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 Ω. 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

1. Strip off the end	2. Slacken the	3. Hold the core wire
of plastic skin,	screw and thread	tight by fastening
and give a twist	the core wire	the screw in the
to the core wire.	deep enough into	direction of an
		arrow.
	the hole.

• 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.
1.	Noise produced when FM station is not tuned in
2.	Sound produced when fast-forwarding cassette tape
	deck
3.	High-frequency sound generated by an oscillator, an
	electronic musical instruments, etc.
4.	Oscillating amplifier signals
5.	Special test signals produced by audio checking CD,
	etc.

15mm

Right hand side speaker (R Channel)

Left hand side speaker (L Channel)

6.	Sound produced when connecting or disconnecting
	audio connection cables (Always turn off the amplifier’s
	power before connecting or disconnecting cables.)
7.	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.

Red cord side R L Red cord side

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.

En-2