25 MIN MAX
(W)
KAC-628
FILTER
OFF
HPF LPF

1RCA cable ground lead terminal

2FILTER switch

These switches allow filtering of the speaker output signals.

KAC-728/528

FILTER

OFF LPF

•HPF (High Pass Filter) position (KAC-628 only)

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

•LPF (Low Pass Filter) position

Only frequencies of 80 Hz or lower are output. (Frequencies above 80 Hz 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.

3OPERATION switch

This switch allows selection of the amplification method of input signals.

KAC-728/528

KAC-628

OPERATION

OPERATION

STEREO MONO(Lch)

 

L+R

 

 

 

 

 

STEREO

MONO(Lch)

 

 

 

 

 

 

 

 

 

•STEREO position

The amplifier can be used as a stereo amplifier.

•L+R position (KAC-628 only)

The input left and right signals are combined before being amplified. Use this position when the unit is used for subwoofer speakers or the L+R (monaural) sound is required.

•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.)

4INPUT 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.

Use the diagram on the

10

right as a guide.

0.5 0.3

 

 

15 1.0

NOTE

 

For the pre-output level or the maximum power output,

refer to the “Specifications”

in the instruction manual of the center unit.

5LINE IN terminal

6Speaker level input terminals

7Fuse (20 A ⋅ 2 : KAC-728)

Fuse (25 A ⋅ 1 : KAC-628)

Fuse (15 A ⋅ 1 : KAC-528)

8Battery terminal

9Ground terminal

0Power control (REMOTE) terminal

!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. When

multiple speakers are to be connected, ensure that the combined impedance is 4Ω or greater.

2CAUTION

The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result.

5