JBL ES250P free download

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ES Series Powered Subwoofer ES250P Service Manual JBL Consumer Products 250 Crossways Park Dr. Woodbury, New York 11797 Released 2008 Discontinued XXXX Rev0 3/2008 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): Peak Dynamic Power *: Driver: Inputs: Low-Pass Frequency: 400 Watts 700 Watts 12" (305mm) PolyPlasTM Line Level (switchable to LFE) Variable from 50Hz to 150Hz (24dB/octave, continuously variable) Frequency Response: Dimensions (H x W x D): Weight: 25Hz ­ Low-pass crossover setting 19-3/4" x 15-3/4" x 16-7/8" (502mm x 400mm x 428mm) 43 lb/19.5kg JBL continually strives to update and improve existing products, as well as create new ones. The specifications and details in this and related JBL publications are therefore subject to change without notice. * The Peak Dynamic Power is measured by recording the highest center-to-peak voltage measured across the output of a resistive load equal to minimum impedance of the transducer, using a 50Hz sine wave burst, 3 cycles on, 17 cycles off. 1 ES250P JBL ES250P 250W Powered Sub Amp US 120vac/60Hz EU 230vac/50-60Hz Yes/No Yes Yes Hi/Lo Line 108-132 207-253 Nom. 120 230 QA Test Limits n/a n/a n/a 250 Unit Vrms Vrms Notes Normal Operation Normal operation, MOMS required Parameter Amp Section Type (Class AB, D, other) Load Impedance (speaker) AVG System impedance Rated Output Power (120VAC) Specification D 4 7 250 Unit n/a Ohms Ohms Watts Conditions Notes Nominal AP Computed BW from 20 to 500Hz Domestic version only 120 VAC-60 Hz Average RMS power, 3/20 Cycles 50 Hz, Driven 6dB above its input sensitivity , average of the first 4 consecutive peaks AVG RMS Dynamic Power THD @ Rated Power THD @ 1 Watt DC Offset Damping factor Input Sensitivity Input Frequency L&R LFE input System Gain Signal to Noise SNR-A-Weighted SNR-unweighted 509 0.5 0.2 10 >50 Watts % % mV-DC DF 200 1 0.3 30 20 217mV driven into a single input 22k filter 22k filter @ Speaker Outputs Measured at amplifier board 90% Measured at the speaker cable. 225 Watts @ of full power THD < 0.1 % @ 50 Hz 50 7 7 49 Hz mVrms mVrms dB 50 Nominal Freq. ±1dB To 1 Watt ±1dB To 1 Watt Reference Single input driven Single input driven, LFE swi