Filter
Top Products
Callouis
for the A4
Cal/outs
for the A4
Top Panel View
2.
Subsonic
/
Hawkins Bass Control Switch
-
Select “Subsonic” to
engage the Subsonic filter at
13Hz.
Select ‘Hawkins Bass Contro/“to
engage the
+6dB
boost
@
45Hz for the
lowpass
channel.
3.
ST/MO(S)/LP
Switch
-
Select “ST” for normal stereo operation. “MO”
for bridged mono operation with a single input signal (number 2 input
only). “LP” for low pass bridged mono operation with input from chan-
nels 3&4.
4.
ST/M0(3)/LP Switch
-
Select “ST” for normal stereo operation. “MO”
for bridged mono operation with a single input signal (number 3 input
only).
“LP”for
low pass bridged mono operation with input from chan-
nels 3&4.
5.
Input Selection Switch
-
Selectable inputs for channels
3&4
from
internal (channels
l&2)
or external (channels
3&4).
Front Control Panel View
6.
Fuse
-
Main power supply fuse. Warning: Rep/ace on/y
with
the same
value fuse!
7.
+12V
-
Connected to a fuse or circuit breaker, then to the battery’s
positive terminal.
‘
8.
9.
10.
11.
12.
13.
14.
15.
Remote
-
Remote turn-on input from the head unit. Accepts
+12V.
GND
-
Main ground connection. Bolt to a clean chassis point in the
vehicle.
Speaker Connection Terminal
-
Speaker connections for channels
l&2
and
3&4.
Low Pass Filter Control Adjustment
-
Crossover frequency control
for the internal low pass filter.
Input Levels
-
Stereo input level control for channels
l&2.
Input Levels
-
Stereo input level control for channels
3&4.
RCA
Inputs
-
Right and Left channel RCA inputs for channels
l&2
and
3&4.
Crossover
S.I.P.‘s
-
High pass crossover frequency settings for ampli-
fier.
Bottom Plate View
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