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ES Series
ES250P
Powered Subwoofer
Service Manual




JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev0 3/2008
Released 2008
Discontinued XXXX
ES250P

- CONTENTS -


BASIC SPECIFICATIONS ......................................1
DETAILED SPECIFICATIONS ................................2
PACKING.............................................................4
CONTROLS/CONNECTIONS..................................5
OPERATION ........................................................7
EXPLODED VIEW/PARTS LIST...............................8
TEST SET-UP AND PROCEDURE...........................9
AMPLIFIER BLOCK DIAGRAM...............................10
DETAILED TROUBLESHOOTING.................... ......12
P.C.B. DRAWINGS...............................................13
ELECTRICAL PARTS LIST ...................................18
IC/TRANSISTOR PINOUTS.....................................23
SCHEMATICS....................................................24



ES250P SPECIFICATIONS

Amplifier Power (RMS): 400 Watts
Peak Dynamic Power *: 700 Watts
Driver: 12" (305mm) PolyPlasTM
Inputs: Line Level (switchable to LFE)
Low-Pass Frequency: Variable from 50Hz to 150Hz
(24dB/octave, continuously variable)
Frequency Response: 25Hz