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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 ­ 150Hz High-Pass Frequency: 150Hz when using speaker-level outputs Frequency Response: 22Hz ­ Low-pass crossover setting Dimensions (H x W x D): 17-3/16" x 16-3/16" x 18" (19" with grille) (with feet, without spikes) 437 x 411 x 457mm (483mm with grille) Weight: 56 lb/25.5kg All features and specifications are subject to change without notice. 1 S120PII Studio Series S120PII 300W Powered Sub/ Plate Amp LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required QA Test Parameter Spec Unit Limits Conditions Notes Amp Section Bridge type amplifier, None of the speaker