Yamaha RX-V640RDS owner manual Connecting an external decoder, Connecting an external amplifier

CONNECTIONS

Connecting an external amplifier

If you want to increase the power output to the speakers, or want to use another amplifier, connect an external amplifier to the OUTPUT jacks as follows.

Note

• When RCA pin plugs are connected to the OUTPUT jacks for output to an external amplifier, the SPEAKERS terminals also output signals.

1 2 3

L	OUTPUT
			CENTER
R	REAR	REAR	SUB
	MAIN (SURROUND)	CENTER	WOOFER

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1MAIN jacks

Main channel line output jacks.

Note

•The signals output through these jacks are affected by the BASS and TREBLE settings.

2REAR (SURROUND) jacks

Rear channel line output jacks.

3CENTER jack

Center channel line output jack.

4REAR CENTER jack

Rear center channel line output jack.

5SUBWOOFER jack

When using a subwoofer with built-in amplifier, including the YAMAHA Active Servo Processing Subwoofer System, connect the input jack of the subwoofer system to this jack. Low bass signals distributed from the main, center and/or rear channels are directed to this jack in accordance with your SPEAKER SET selections. The unit also directs the LFE (low-frequency effect) signals generated when Dolby Digital or DTS is decoded to this jack based on your SPEAKER SET selections.

Notes

•The cut-off frequency of the SUBWOOFER jack is 90 Hz.

•If you do not use a subwoofer, allocate the signals to the main left and right speakers by changing the settings of SOUND 1 SPEAKER SET item “1E BASS” on the set menu.

•Use the control on the subwoofer to adjust its volume level. You can also adjust the volume level by using this unit’s remote control (see “SETTING THE SPEAKER LEVELS” on page 50).

Connecting an external decoder

This unit is equipped with 6 additional input jacks (MAIN left and right, CENTER, SURROUND left and right and SUBWOOFER) for discrete multi-channel input from a component equipped with a multi-channel decoder and 6 channel output jacks such as a DVD/SACD player.

MAIN	IN
	VCR 2
	/DVR
SURROUND	OUT
	MONITOR OUT
SUB	VIDEO	S VIDEO
WOOFER	CENTER

6CH INPUT

L	R	L R
CENTER	SURROUND
SUBWOOFER	MAIN

DVD/SACD player

Note

•When you select 6CH INPUT as the input source, the unit automatically turns off the digital sound field processor, and you cannot use DSP programs.

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