JBL E250P Preliminary Service Manual Download Page 1

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Northridge

™

E-Series

E250P

Powered Subwoofer

Preliminary Service Manual

JBL Consumer Products

250 Crossways Park Dr.

Woodbury, New York 11797

Summary of Contents for E250P

Page 1: ...Northridge E Series E250P Powered Subwoofer Preliminary Service Manual JBL Consumer Products 250 Crossways Park Dr Woodbury New York 11797...

Page 2: ...5 way binding posts Low Pass Frequency Variable from 50Hz to 150Hz Frequency Response 25Hz Low pass crossover setting Dimensions H x W x D 19 3 4 x 14 3 8 x 16 1 2 502mm x 365mm x 419mm Weight 43 lb 1...

Page 3: ...M Residual Noise Floor 1 5 mVrms max 2 Volume max w A P Swept Bandpass Measurement Line freq harmonics BW 20 Khz Line level inputs must be terminated using 1KOHM Input Impedance Line Input L R LFE 10K...

Page 4: ...KER CONNECTION When we designed the E150P and E250P powered subwoofers our goal was to offer the user the best pos sible performance combined with the most flexible and complete installation options P...

Page 5: ...the front left and right speakers or the subwoofer Refer to the connection dia gram for guidance Twist together the leads at one end of the speaker wires that you have designated for the left front s...

Page 6: ...IVER PREAMPLIFIER L R For LFE use L or R Analog Receiver Processor Line Level Connections Use this installation method with an analog receiver processor that does not have digital processing or bass m...

Page 7: ...roper level adjustment depends on sev eral variables such as room size subwoofer placement type of main speakers and position Adjust the subwoofer level so that the volume of the bass information is p...

Page 8: ...uts and there is no sound from the subwoofer Check that the receiver amplifier is on and a source is playing Check that the powered subwoofer is plugged into an active electrical outlet and is switche...

Page 9: ...rands International Rectifier or Fairchild Replace both Q18 and Q22 MOSFET s in the circuit even if only one seems to be damaged Do NOT mix match these components from different manufacturers or batch...

Page 10: ...4 11 903802 016 SCREW PB HXS 8x1 ZINC WOOFER 8 12 338128 002 ASY WOOFER 12 DCR 4 8 1 13 336799 001 ASY PORT TUBE 1 14 352024 001 ASY GRILLE BLK FRNT 1 15 333249 003 CUP GRILLE TITANIUM BEECH MODEL CHE...

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Page 16: ...4 187698 100 SMD Resistor 187K 1 8W F 0805 R45 024 200598 120 SMD Resistor 20K 1 8W J 0805 R94 024 220398 120 SMD Resistor 220R 1 8W J 0805 R90 024 220498 121 SMD Resistor 2K2 1 8W J 0805 R1 87 61 024...

Page 17: ...acitor 56pF 50V J 0805 NPO C57 61 031 560343 102 SMD Capacitor 560pF 50V J 0805 NPO C56 032 100484 200 Mylar Capacitor 1uF 250V K P 15 C70 C70B 033 470444 270 NPE Capacitor 4u7 50V K10 R 8x13 SBE C73...

Page 18: ...shay D1 4 8 10 23 27 28 054 540100 100 SMD Zener Diode PN MMBT5401 LT1 SOT 23 Q20 24 26 054 555100 100 SMD Zener Diode PN MMBT5551 LT1 Q25 050 505200 001 LED PN LT 2402 21 D1B Miscellaneous 065 050400...

Page 19: ...inal T187MA t 0 8mm PC187 0 8 AC1 AC3 T1 T2 AC2 SW2 SW4 072 040169 000 Connector 2 PIN JS 1001 2 P 2 5mm 072 060170 000 B P W Accessory Parts 073 032315 601 Black Anodized 70x58x20mm 073 050001 000 Fu...

Page 20: ...2N5401 Q1 2 Base 3 Collector 1 Emitter 1 2 3 MPSW06RLRA MPSW56RLRAMPQ MPS2222ARLRA 2N2907A 2N5551 Q2 16 3 21 19 23 17 MOSFET IRF640 Q18 22 TIP31C Q4 MMBT3904LTI SOT23 MMBT3906LTI SOT23 DTC114EK SMT3 M...

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Page 23: ...P E250P 1 2 351249 001 CARTON MASTER E250P BEECH MODEL 1 351249 003 CARTON MASTER E250P BLACK MODEL 1 350884 003 CARTON MASTER E250P CHERRY MODEL 1 3 351252 001 PAD END TOP E250P 1 4 351252 002 PAD EN...