JBL PB12 Service Manual

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 5 Amp choke
60302 MODULE S64AMI
108326 Led Harness
With two LED's,Molex plug
Glued into cabinet
80116 Transformer MCI4632 100VA 4632 transformer
70151 Switch SW SPST Power Switch
70322 LED socket PCB mount LED socket
80117 3AG FUSE 2A SloBlo T type
70324 0.187" PCB Tabs 7
70323 PCB Fuse Holders 2
70325 PB12 faceplate PB12 faceplate
80105 Power cord Power cord
70305 Strain relief Strain relief
PB12 PREAMP PCB Version #6.3
Part# Designator Description
Semiconductors
60102 U1 TLO 64 OP amp
60100 U2 LM324 OP amp
Capacitors Film Caps may be used in any position EXCEPT C1,C2
30707 C1 200uF 50V BP Electrolytic
30504 C10 100nF 50V mono ceramic
30504 C11 100nF 50V mono ceramic
30504 C12 100nF 50V mono ceramic
30504 C13 100nF 50V mono ceramic
30530 C16 100nF 50V mono ceramic
30531 C17 150nF 50V mono ceramic
30100 C18 330pF 50V mono ceramic
30100 C19 330pF 50V mono ceramic
30707 C2 200uF 50V BP Electrolytic
30502 C20 100nF 50V mono ceramic
12

JBL PB12 Specifications

General

Type	Powered
Woofer Size	12 inches
Frequency Response	150 Hz
Enclosure Type	Bass Reflex
Low Pass Crossover	50Hz - 150Hz