DA 4002 (serv.man2) - JBL Car Audio Service Manual (repair manual). Page 9

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Block  Diagram
8
DA 4002
Multichannel Automotive Amplifier
Da4002 BLOCK DIAGRAM
GND
DE  +12V
REM
L
P.W.M
L
HI-IN
R
BUFFER
R
BUFFER
POWER
SUPPLY
-VCC
+VCC
FLAT
70Hz
100Hz
FLAT
BASS
BOOTS
ON
CROSS
OVER
PRE
AMP
POWER
 AMP
PROTECTION
DRIVER
L+
L-
100Hz
70Hz
FLAT
FLAT
BASS
BOOTS
ON
CROSS
OVER
PRE
AMP
POWER
 AMP
PROTECTION
DRIVER
R+
R-
8
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