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NorthridgeTM E-Series
E250P
Powered Subwoofer
Service Manual
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev2 2/2004
E250P
- CONTENTS -
BASIC SPECIFICATIONS ......................................1
SAFETY INFORMATION .......................................2
DETAILED SPECIFICATIONS ................................3
CONNECTIONS....................................................4
OPERATION ........................................................7
BASIC TROUBLESHOOTING.................................8
EXPLODED VIEW/PARTS LIST...............................9
TEST SET-UP AND PROCEDURE..........................10
AMPLIFIER BLOCK DIAGRAM...............................11
TECH TIP JBLTT2003-04 .....................................12
DETAILED TROUBLESHOOTING.................... ......13
P.C.B. DRAWINGS...............................................16
ELECTRICAL PARTS LIST ...................................20
IC/TRANSISTOR PINOUTS.....................................24
SCHEMATICS.....................................................25
PACKING...........................................................27
E250P SPECIFICATIONS
Amplifier Power (RMS): 250 Watts
Peak Dynamic Power *: 550 Watts
Driver: 12" (305mm) PolyPlasTM
Inputs: Line Level (switchable to LFE) and Speaker
Level with 5-way binding posts
Low-Pass Frequency: Variable from 50Hz to 150Hz
Frequency Response: 25Hz