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FRONT PANEL
4 CHANNEL
13
Adjustments
1. Set to the "H.P.F" position when the amplifier is used to drive a tweeter/midrange system. The
frequencies below the crossover point will be attenuated at 12dB/octave. Permits adjustment
of the crossover frequency ,by rotating the knob to select any frequency between 60Hz to 1.2KHz
as the crossover point.
2. Set to the "L.P.F" position when the amplifier is used to drive a subwoofer. The frequencies above
the crossover point will be attenuated at 12dB /octave. Permits adjustment of the crossover
frequency, by rotating the knob to select any frequency between 50Hz to 250 Hz as the crossover
point.
3. Set to the "OFF" position when the amplifier will be used for driving full-range speakers. The full
frequency bandwidth will be output to the speakers without high or low frequency attenuation.
4. Level adjustment-The sensitivity adjustment is to allow the amplifier to work with many different
brands of head units. It allows input signal to vary between 350 millivolts to 5 volt from the head
unit or other signal processor. Start by setting the sensitivity adjustment to the "MIN" (3 volts).
Using a cassette or compact disc that you are familiar with ,turn on head unit to the 3/4 volume
setting. Slowly turn up sensitivity adjustment towards the "MAX" (200 millivolts) using a flat head
screw driver. Stop turning on the onset of distortion and turn back just a slight. The 3/4 volume
setting is now the "maximum" volume for the head unit. The goal is to keep the level control to the
lowest setting yet still have enough signal to drive the amplifier. This is done to prevent over driving
the amplifier and to keep system noise to a minimum. It is important not over drive speakers (at
point of distortion) this will cause permanent damage to the speakers. Also,
if the amplifier itself is over driven, it could be damaged.
LOW INPUTLOW INPUT
POWERPOWER PROTECTPROTECT
LINE OUTPUTLINE OUTPUT
REMOCONREMOCON
LEVELLEVEL
6V6V 15Hz15Hz 50Hz50Hz 60Hz60Hz
ONON L.P.FL.P.F
L.P.FL.P.F
FULLFULL
0.24V0.24V 45Hz45Hz 250Hz250Hz 1.2kHz1.2kHz
OFFOFF H.P.FH.P.F
H.P.FH.P.F
0dB0dB12dB12dB
BASS
EQ
BASS
EQ
LOW
PASS
LOW
PASS
HIGH
PASS
HIGH
PASS
SUBSONIC FILTERSUBSONIC FILTER
LL LL
RR RR
PHASE
PHASE
00 180180
SLAVE
LINE INPUT
ON
OFF
L.P.F
50Hz
GAIN
6V 0.24V
15Hz250Hz
SUBSONIC
50Hz
FILTER
REMOCON
PHASE
180°
MASTER
SLAVER
R
L
0°
MONO CHANNEL
2 CHANNEL
LOW INPUT
POWER PROTECT
LINE
OUTPUT
REMOCON
LEVEL
6V 15Hz 50Hz0.24V 45Hz 250Hz0dB12dB
BASS
EQ
LOW
PASS
SUBSONIC FILTER
L
L
R R
PHASE
0 180
ON OFF
1 CHANNEL