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PowerBassTM Series
PB12
Powered Subwoofer
Service Manual
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev10 2/2004
PB12 TABLE OF CONTENTS
Safety Information ....................................................................3
Basic Specifications ..................................................................4
Detailed Specifications ..............................................................5
Controls and their Function..........................................................6
Connections ............................................................................7
Operation ..............................................................................10
Troubleshooting.......................................................................11
Test Setup and Procedure .........................................................12
Service Bulletin JBL 2001-03 .....................................................13
Service Bulletin JBL 2001-04 .....................................................14
Service Bulletin JBL 2001-05 .....................................................17
Service Bulletin JBL 2001-07 .....................................................18
Service Bulletin JBL 2001-08 .....................................................19
Tech Tip JBLTT2003-04............................................................20
Exploded View/Packaging..........................................................21
Amplifier Exploded View ...........................................................22
Amplifier Faceplate/Access........................................................23
Integrated Circuit Diagrams.......................................................24
Testing Procedures................. ................................................26
Block Diagram Revision 2.........................................................32
Electrical Parts List (PCB version 6.3