JBL TLX CSS-SUB1 User manual

TLX CSS-SUB1
POWERED SUBWOOFER
SERVICE MANUAL
THE TLX CS-SUB1 SUBWOOFER IS PART OF THE TLX CS-SP1OOO SYSTEM
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev0 8/2002

- CONTENTS -
SPECIFICATIONS ……………………..…..……….…..………..2
CONNECTIONS …………………….……….……………..…..….….3
OPERATION ………………………..……..….………..………….4
TEST PROCEDURE ……………………….….………..…………..5
PARTS LIST ……………..…………..………………....…………6
IC BLOCK DIAGRAMS……………………………………………..…7
SCHEMATICS ..………..……… ……………….…………………..8
PACKING ……………………………………………………………..11
TLX CSS-SUB1 SPECIFICATIONS
Driver Low Frequency 8” Woofer
(Nominal Impedance 8 W) DCR = 7.0 W
Enclosure Design Bass Reflex
Amplifier Power 75 watts RMS
Frequency Response 45Hz -150Hz (±6dB)
Crossover Frequency 50 to 200 Hz Continuously Variable
Inputs High Level (Speaker) Input terminals
Outputs Full Range speaker
Sensitivity 1.7V
Input Impedance 4.7K W
Auto-off Delay 8 minutes
Auto-on Threshold 1mV
Dimensions 13 3/4 x 14 3/4 x 15 1/8” (H x W x D)
(349 x 374 x 384mm) includes 1 3/4” feet
Shipping Weight 26 lbs./11.8kg
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TLX CSS-SUB1 TEST PROCEDURE
Equipment needed:
·Function/signal generator/sweep generator
·Integrated Amplifier
·Multimeter
·Speaker cables
General Function UUT = Unit Under Test
1) Connect one pair of speaker cables to either high level input terminal on UUT. Cables should be
connected to an integrated amplifier fed by the signal generator. VOLUME control should be full
counterclockwise.
2) Turn on generator and adjust so that speaker level output is 2.0V, 50 Hz. Turn VOLUME control full
clockwise, FREQUENCY control full clockwise.
3) Green LED should light, immediate bass response should be heard and felt from woofer and port tube
opening.
Sweep Function
1) Follow steps 1 - 4 above, using a sweep generator as a signal source.
2) Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or
any other noises. If any unusual noises are heard, remove driver and test.
Driver Function
1) Remove driver from cabinet; detach + and - wire clips.
Check DC resistance of driver; it should be 7.0 ohms ±10%.
2) Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated
amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
3) Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
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TLX CSS-SUB1 PARTS LIST
MECHANICAL/PACKING PARTS LIST
Reference Part Number Description Quan.
O/M 15-30-4262-00 Owner’s manual for TLX CS-SP1000 1
CABINET Not for Sale Enclosure 1
DRIVER 44421 8” Woofer 1
Feet 846-7652 or 15-71-4039-00 Plastic Feet 4
Amp A3D1F03U1013 Complete Amplifier Assembly 1
TM501 CO1334 High Level Input Terminal Block 1
SW501 507-8046 Slide switch, (phase) 1
Knob 710-8047 Level, Freq. Knobs 2
F802 870-0017 2A ACG Line Fuse 1
RLY601 510-8050 Output Relay 1
COVER XX1275 Plastic cover for amp 1
CORD HA1132 AC Power Cord 120v 1
HARNESS HA1218 Speaker wiring harness – Molex end 1
ELECTRICAL PARTS LIST
Variable Resistors
VR502 146-8020 50K x 2 Frequency Pot. 1
VR501 RS2087 10K x 1 Gain Pot. 1
Diodes
D503-511, 5636-1SS133 Small signal diode 1SS133 14
D601-605
Integrated Circuits
IC501,502,503, RH14558-001 RC4558L Dual Op-Amp 5
504,505
IC601 205419000206 uPC1237HA Limiter IC 1
Transistors
Q504,506,509 9163310420 NPN DTC124ES 3
Q507,508,613 9163011220 PNP DTA124ES 3
Q610 2050C5100007 NPN 2SC5100 1
Q611 2050A1908007 PNP 2SA1908 1
Q609 TR1330 PNP 2SA965 1
Q608 2SC2235 NPN 2SC2235 1
Q607 2050C403806T NPN 2SC4038 1
Q501,502,604 X20-0063 NPN 2SC2785 3
Q601,602,603, X20-0381 PNP 2SA1175 4
509
Misc.
D512 Bi-color LED LE1032 1
C801,802 CP1584 Main filter capacitor 6800 mfd. 2
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