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StudioTM Series
S120PII
Powered Subwoofer
Service Manual
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev3 2/2006
- CONTENTS -
BASIC SPECIFICATIONS ......................................1
DETAILED SPECIFICATIONS ................................2
CONNECTIONS....................................................4
OPERATION ........................................................7
BASIC TROUBLESHOOTING.......................... ......8
BULLETIN JBL2003-06..........................................9
S120PII AMPLIFIER BLOCK DIAGRAM..................10
S120PII EXPLODED VIEW....................................11
S120PII TEST SET UP AND PROCEDURE..............12
S120PII ELECTRICAL PARTS LIST .......................13
P.C.B. DRAWINGS...............................................20
S120PII IC/TRANSISTOR PINOUTS.........................22
S120PII SCHEMATICS.........................................23
S120PII PACKAGE..............................................27
JBL S120PII SPECIFICATIONS
Amplifier Power (RMS): 400 Watts
Driver: 12" PolyPlasTM (polymer-coated cellulose
fiber) (4.4 ohms DCR)
Inputs: Line Level (switchable to LFE), BassQTM and
Speaker Level
Outputs: BassQ and Speaker Level (High-Pass)
Low-Pass Frequency: Continuously variable from 50Hz