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8
speaker connections
power terminals
power fuse
protection LED
power LED
ch 3/4 low level inputs
ch 3/4 high level inputs
ch 1/2 low level inputs
ch 1/2 high level inputs
ch 3/4 bass boost level control
ch 3/4 low pass frequency control
ch 3/4 high pass frequency control
ch 3/4 crossover mode selector switch
ch 3/4 input level control
ch 1/2 input level control
ch 1/2 bass boost level control
ch 1/2 low pass frequency control
ch 1/2 high pass frequency control
ch 1/2 crossover mode selector switch
features and controls
4 ch amp PB-638GX • PB-1038GX
4 CHANNEL MOSFET AMPLIFIER
FREQ.
CH 3
LOW IN
LEVEL
MIN MAX
CH 4
HPF
+18db
0
35
400
Hz
LPF
HPF
2.5k
BASS
BOOST
MIN MAX
FREQ.
POWERPROTECT
CH 1
CH 2
80
Hz
LPF
HI IN
CH4 CH3
+ - - +
LOW IN
BASS
BOOST
LEVEL
FULL
HPF
LPF
FULL
HPF
LPF
CHANNEL 1/2CHANNEL 3/4
HI IN
CH2 CH1
+ - - +
+18db
0
2.5k
80
Hz
35
400
Hz
REMOTE
BASS BOOST(CH3/4)
BRIDGED
+
--
+
-
+
-
+
CH3
CH4
GROUND
+12V BATT
REM
BRIDGED
FUSE
-
+
-
+
CH1
CH2