4English
Controls / Indicator
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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.
1INPUT 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 the right as a guide.
For the pre-output level or the maximum
power output, refer to the “Specifications”
in the instruction manual of the center unit.
2Bch BASS BOOST switch
Setting this switch to "ON" emphasizes the
bass.
You can use the BASS BOOST for amplifier
B only.
•ON position:
BASS BOOST is +6 dB.
•OFF position:
BASS BOOST is OFF.
3FILTER switch
This switch allows to apply high-pass or
low-pass filtering to the speaker outputs.
•HPF (High-Pass Filter) position:
The filter outputs the band of higher
frequencies than the frequency set with the
FILTER FREQUENCY control.
•OFF position:
The entire bandwidth is output without
filtering.
•LPF (Low-Pass Filter) position:
The filter outputs the band of lower
frequencies than the frequency set with the
FILTER FREQUENCY control.
4OPERATION 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.)
5INPUT SELECTOR switch
This switch selects the input method of the
signals to be amplified by amplifiers A and
B.
•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.
NOTE
KAC-8401(M) 1English 02.11.14 10:38 AM Page 4