8
O
PERATION
ADJUSTING GAIN
To adjust the gain setting, turn the amplifier gains all the way down (counter-clockwise).Turn the source unit
volume up until distortion is audible and then turn it down a bit until the distortion is inaudible.This will be
about all the way up on most source units. Next, increase the amplifier gain setting until adequate volume is
achieved.
NOTE:
Best signal to noise and dynamic range are realized with the gain at minimum.
CAUTION
:Avoid setting the amplifier gain very high as noise and distortion will
increase significantly.
ADJUSTING CROSSOVER FREQUENCY
Placing the crossover switch in the HP position sets the amplifier to the 80Hz High Pass mode, enabling
frequencies above the cut-off point to pass.
Placing the crossover switch in the AP position sets the amplifier to the All Pass mode, preventing any
crossover adjustment, allowing all frequencies to pass.
Placing the crossover switch in the LP position sets the amplifier to the Low Pass mode, enabling
frequencies below the cut-off point to pass, adjustable between 50Hz-250Hz.Turn the crossover
adjustment knob all the way down.With the system playing, turn the crossover adjustment knob up slowly
until the desired crossover point is achieved.A good place to start is at about 80Hz.
The sub channel utililzes a dedicated Low Pass crossover, adjustable between 40Hz-130Hz.
PUNCH BASS
The Punch Bass control is a narrow band adjustment at 45Hz selectable at 0dB, +6dB and +12dB increments.
The sub channel utilizes a dedicated Bass control variable from 0dB to +12dB, centered at 45Hz.
PHASE SWITCH
Allows you to conveniently switch the output phase of the amplifier between 0° and 180°. This has the same
effect as physically reversing the Positive (+) and Negative (-) speaker wires.
REMOTE PUNCH LEVEL CONTROL
When connected, the “Gain Control” is linked and allows you to remotely control the output level of the
amplifier from the dash or center console.
0dB +6dB +12dB
250
175
225
REAR LP FREQ.
PUNCH LEVEL
CONTROL
BASS
100
HP-80Hz-AP-LP
50
75
130
40
55
75
100
115
MAX
MIN
SUB FREQ. BASS
REAR GAIN
1
3
5
7
9
11
INPUT
REAR
SUB
L
R
11
7
9
0° 180°
FRONT GAIN
FRONT
LP-AP-HP-80Hz
0dB +6dB +12dB
225
250
175
1
3
5
11
7
9
PHASE
FRONT LP FREQ.
SUB GAIN
BASS
100
PROTECT
POWER 50
75
1
3
5
Crossover Control (Variable Low-Pass)
Crossover Control (Fixed High-Pass)
Punch Bass
Crossover Control (All-Pass)
Crossover Control
Punch Bass
+
-
+
-
Phase Control
Punch Level Control
Replacement Part: #PLC