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SUB125/125a
Amplifier/Subwoofer
SERVICE MANUAL
JBL Consumer Products Inc.
250 Crossways Park Drive
Woodbury, N.Y. 11797
A Harman International Company
Rev B 7/2003
Amplifier/Subwoofer SUB125
The SUB125 is part of the SCS125/125a system
TABLE OF CONTENTS
COVER ...........................................................................1 Service Bulletin JBL9901 ..........................................10
GENERAL SPECIFICATIONS .......................................2 SCS125/125a PACKING..............................................11
TABLE OF CONTENTS.................................................2 SUB125 EXPLODED VIEW.........................................12
SCS125/125a SPECIFICATIONS ..................................3 SUB125 PCB COMPONENT SIDE .............................13
CONTROLS AND THEIR FUNCTION...........................5 SUB125 PCB SOLDER SIDE......................................14
SCS125/125a SPEAKER LEVEL CONNECTIONS ......6 SUB125 ELECTRICAL PARTS LIST ..........................15
SCS125/125a LINE LEVEL CONNECTIONS ...............7 SUB125 INTEGRATED CIRCUIT DIAGRAMS ...........17
SUB125 TEST SET UP AND PROCEDURE................8 SUB125 POWER AMP SCHEMATIC DIAGRAM........18
SIMPLE TROUBLESHOOTING .....................................9 SUB125 PRE-AMP SCHEMATIC DIAGRAM..............19
GENERAL SPECIFICATIONS
SCS125/125a System
Frequency Response
35Hz