Kenwood KAC-648 !LINE OUT terminal, @RCA cable ground lead terminal, #INPUT SENSITIVITY control, $OPERATION switch, •STEREO position:, •MONO (Lch) position:, %FILTER switch

!LINE OUT terminal

These jacks output respectively the signals input to amplifiers A and B. They always output the stereo signals regardless of the position of the OPERATION switch.

@RCA cable ground lead terminal

#INPUT SENSITIVITY control

Set this control according to the pre-output level of the center unit connected with this unit, or to the maximum power output of the genuine-accessory car stereo.

The sensitivities of amplifiers A and B can be adjusted independently regardless of the position of the input selector switch.

Use the diagram on		15			10
the right as a guide.				1.0
				1.0
		2.0		0.5	0.5
		3.0		0.3	0.3
	25		MIN	MAX
			4.0 (V)
				0.2
NOTE			(W)

For the pre-output level or the maximum power output, refer to the “Specifications” in the instruction manual of the center unit.

$OPERATION switch

The amplification methods of the signals input to amplifiers A and B can be selected

independently according to the setting of this switch.

•STEREO position:

The amplifier can be used as a stereo amplifier.

•MONO (Lch) position:

Amplifies the signal input from the left side only. Set to this position and make bridged connections to use as a high-power monaural amplifier. (The input right signal is not output.)

%FILTER switch

These switches allow filtering of the speaker output signals.

•HPF(High Pass Filter) position:

Only frequencies of 150Hz or higher are output. (Frequencies below 150Hz are cut.)

•LPF(Low Pass Filter) position:

Only frequencies of 80Hz or lower are output. (Frequencies above 80Hz are cut.) The Lch and Rch will be mixed before output even if the operation switch is set to

STEREO.

•OFF position:

The original sound without filtering is output.

System examples

■Full-range 4-channel + Subwoofer system

						1.0
	FILTER			OPERATION		0.5
	OFF			STEREO	MONO(Lch)
	HPF	LPF				0.3
					MIN	MAX
INPUT SELECTOR CONTROL			A		INPUT
					SENSITIVITY(V)
A B	A		B
	CONTROL					1.0
	FILTER			OPERATION		0.5
	OFF				(Lch)
	HPF	LPF		STEREO	MONO	0.3
					MIN	MAX
					INPUT
					SENSITIVITY(V)

	L	A	L	Front
	R
CENTER UNIT			R	speaker
	L	B		Rear
	R		L
Switch setting	L	LINE	R	speaker
	R	OUT
	L			Subwoofer
	R
	Power amplifier

5