Kenwood Explore Features and Controls of the KAC 648 Stereo Amplifier

Controls

This is a 4 channel amplifier including 2 stereo amplifiers in a body. One amplifier is referred to as amplifier A and the other is amplifier B. This unit is compatible with a large variety of systems by combining the switches and functions described in the following.

			5
FUSE(25A)	POWER IN	SPEAKER OUTPUT	BRIDGED	RIGHT
	GND		LEFT
		A
BATT	P.CON(REMOTE)

25 B

1 2 3 4 6

SPEAKER LEVEL INPUT

LEFT RIGHT

A

B

7

SPEAKER LEVEL INPUT

A

B

L R

89 0 !

FILTER	OPERATION	INPUT SELECTOR		LINE IN		LINE OUT	OPERATION	FILTER
							(Lch)
OFF	STEREO MONO(Lch)	A B	A	A	B	A + B	STEREO MONO	OFF
HPF LPF								HPF LPF

		1.0				1.0
		0.5	MONO L	L		0.5
		GND
		0.3				0.3
	MIN	MAX			MIN	MAX	4 CHANNEL
	INPUT				INPUT
	SENSITIVITY(V)		R	R	SENSITIVITY(V)		POWER AMPLIFIER
CONTROL	A					CONTROL	B
mA			@				mA

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1 Fuse (25 A ⋅ 1)	When multiple speakers are to be
2 Battery terminal	connected, ensure that the combined
	impedance is 4Ω or greater.
3 Ground terminal
	2CAUTION
4 Power control (REMOTE) terminal	The rated input of the speakers should be
5 Amplifier A speaker output	no less than the maximum output of the
	amplifier. Otherwise malfunction may
terminals
	result.

6Amplifier B speaker output terminals

❖SPEAKER OUTPUT terminals

•Stereo Connections:

When you wish to use the unit as a stereo amplifier, stereo connections are used.

The speakers to be connected should have an impedance of 2Ω or greater. When

multiple speakers are to be connected, ensure that the combined impedance is 2Ω or greater for each channel.

•Bridged Connections:

When you wish to use the unit as a high- output monaural amplifier, bridged connections are used. (Make connections to the LEFT channel (+) and the RIGHT channel (–) SPEAKER OUTPUT terminals.)

The speakers to be connected should have an impedance of 4Ω or greater.

7Speaker level input terminals

8INPUT SELECTOR switch

This switch selects the input method of the signals to be amplified by amplifiers A and

B.

A B A

INPUT SELECTOR

•A B position:

Amplifies both of the signals input to amplifiers A and B.

•A position:

Amplifies only signal input amplifier A with both amplifiers A and B.

9Amplifier A LINE IN terminal

0Amplifier B LINE IN terminal

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