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JBL PowerBass PB12 Service Manual

Other manuals for PowerBass PB12: Owner's Manual, Service Manual, Service Manual
Manual is about: PowerBass Series Powered Subwoofer

Summary of PowerBass PB12

  • Page 1

    Powerbass series pb12 subwoofer preliminary service manual jbl incorporated, inc. 250 crossways park dr. Woodbury, new york 11797.

  • Page 2: -  Contents  -

    - contents - basic specifications ……….……………….…….……………..……………..2 detailed pb12 specifications…………………….……….……..……………....3 connections…………………………………………………..……………..………..4 operation………………………………….……………………………………..…….8 troubleshooting…………………….…………….………………..….……..…….9 electrical parts list ……………….…………..………….....

  • Page 3

    General specifications pb12 subwoofer output power 250 watts rms driver 12" woofer frequency response 25hz – to low pass frequency setting inputs line level (option: lfe); speaker level outputs speaker level fixed frequency 150hz low-pass frequency variable from 50hz – 150hz high-pass frequency 150h...

  • Page 4

    Jbl pb 12 250w powered sub 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 parameter specification unit qa test limits conditions notes amp section type (class ab, d, other)...

  • Page 5: Caution

    2 1. Read instructions. All the safety and operating instructions should be read before the product is operated. 2. Retain instructions. The safety and operating instructions should be retained for future reference. 3. Heed warnings. All warnings on the product and in the operating instructions shou...

  • Page 6: Caution

    2 1. Read instructions. All the safety and operating instructions should be read before the product is operated. 2. Retain instructions. The safety and operating instructions should be retained for future reference. 3. Heed warnings. All warnings on the product and in the operating instructions shou...

  • Page 7: +    –

    5 dolby pro logic (non-digital) – line level use this installation method for dolby pro logic appli- cations (not dolby digital, dts or other digital processing), where the receiver/processor is equipped with a subwoofer output or a volume-controlled preamp (line-) level output: use rca-type patch c...

  • Page 8: +    –

    Dolby pro logic (non-digital) – line level use this installation method for dolby pro logic appli- cations (not dolby digital, dts or other digital processing), where the receiver/processor is equipped with a subwoofer output or a volume-controlled preamp (line-) level output: use rca-type patch cor...

  • Page 9: O P E R A T I O N

    7 t r o u b l e s h o o t i n g o p e r a t i o n when the unit is plugged in and (for the pb12 only) the power switch is on and no signal is received, the leds on the front of the unit will turn red. When a signal is present, the leds will turn green. Note: it will take several minutes for the leds...

  • Page 10: O P E R A T I O N

    6 7 t r o u b l e s h o o t i n g o p e r a t i o n when the unit is plugged in and (for the pb12 only) the power switch is on and no signal is received, the leds on the front of the unit will turn red. When a signal is present, the leds will turn green. Note: it will take several minutes for the le...

  • Page 11

    Electrical parts list - pb12 pb12 poweramp pcb version 6.3. Part# designator description 50100 br rect rs604 6amp bridge rectifier 50105 d1 1n4744a 15v 1w zener 50112 d10 1n5242b 12v .5w zener 50104 d11 1n4148 sig diode 50112 d12 1n5242b 12v .5w zener 50104 d13 1n4148 sig diode 50104 d14 1n4148 sig ...

  • Page 12

    Part# designator description resistors r100 not used 40105 r10a 0.1r .5w metal 40105 r10b 0.1r .5w metal 40105 r10c 0.1r .5w metal 40420 r11 1k .25w carbon 40420 r12 1k .25w carbon 40417 r13 47k .25w carbon 40718 r14 3k3 .25w carbon r15 not used 40735 r1a 7k5 2w metal 40735 r1b 7k5 2w metal 40735 r1...

  • Page 13

    Part# designator description 40738 r7b 10k 2w metal 40738 r7c 10k 2w metal 40738 r8a 10k 2w metal 40738 r8b 10k 2w metal r9 not used miscellaneous 80121 l1 220uh 5 amp gapped ecore choke 80122 l2 8u5h 5 amp ferrite bead 80122 l3 8u5h 5 amp ferrite bead 80122 l4 8u5h 5 amp ferrite bead 80100 cmc 2m2h...

  • Page 14

    Part# designator description 30502 c21 100nf 50v mono ceramic 30502 c22 100nf 50v mono ceramic 30502 c23 100nf 50v mono ceramic 30101 c3 220pf 50v mono ceramic c30 not used 30101 c4 220pf 50v mono ceramic 30101 c5 220pf 50v mono ceramic 30101 c6 220p 50v mono ceramic c7 0r c8 0r 40730 c9 1k .25w met...

  • Page 15

    Miscellaneous 108320 rca connector dual rca-yellow 108116 hi level i/o binding post out binding post 108116 hi level i/o binding post in binding post 40402 level 5k pot log (a) pot 40707 crossover control 20k pot lin (b) pot. 70150 lfe switch sw spdt mini-toggle 70150 phase switch sw spdt mini-toggl...

  • Page 16

    Pb12 mechanical & packing parts list part# description 203500 12” woofer 203410 foot 203520 outer carton 203430 owner’s manual 120v 203550 amplifier complete 15.

  • Page 17

    Vers63.Gbl (board layer 1) scale=1.20 wed may 17 08:26:14 2000

  • Page 18

    Vers63.Gtl (board layer 1) scale=1.20 wed may 17 08:36:44 2000

  • Page 19

    Vers63.Gto (board layer 1) scale=1.36 wed may 17 08:38:34 2000

  • Page 20

    1 2 3 4 a b c d 4 3 2 1 d c b a title number revision size tabloid date: 20-apr-2000 sheet of file: t:\pb12 sch folder\..\pb12 preamp rev5.Sch drawn by: 1 2 3 4 5 6 un-designated connector not used u1 u2 u1 tlo64 u1 r16 not used c9 1k c8 0r c7 0r r15 not used r17 56k2 r14 68k1 r35 137k r13 33k2 r9 2...

  • Page 21

    1 2 3 4 5 6 7 8 9 10 a b c d e f 10 9 8 7 6 5 4 3 2 1 f e d c b a title number revision size d date: 20-apr-2000 sheet of file: t:\pb12 sch folder\..\pb12 pwramp rev5.Sch drawn by: 1 2 3 4 5 6 un-designated connector not used br rect rs604 r40 1k r41 1000k u1 tlo64 c41 1uf d12 1n5242b d14 1n4148 c42...