JBL GT5-A402, Service Manual, Page: 2 / 15

- CONTENTS -
SPECIFICATIONS ………………………………………..1
PACKING……………………………………………..…....2
CONTROL/INSTALLATION DRAWINGS………………3
CONTROL/INSTALLATION INSTRUCTIONS………....4
BASIC TROUBLESHOOTING……………………………5
EXPLODED VIEW/PARTS LIST…….….….…………....6
AMPLIFIER BLOCK DIAGRAM…………………….……7
P.C.B. DRAWINGS….………………………...…….…….8
ELECTRICAL PARTS LIST ..……….……….…….……10
IC/TRANSISTOR PINOUTS..…………………………….13
SCHEMATICS……………..………….…….………..…...14
Specifications
GT5-A402 Output Power: 40W RMS x 2 channels @ 4 ohms; ≤ 1% THD + N
(14.4V supply) 60W RMS x 2 channels @ 2 ohms; ≤ 1% THD + N
120W RMS x 1 channel (bridged) @ 4 ohms; ≤ 1% THD + N
GT5-S422 Output Power: 45W RMS x 2 channels @ 4 ohms; ≤ 1% THD + N
(14.4V supply) 70W RMS x 2 channels @ 2 ohms; ≤ 1% THD + N
120W RMS x 1 channel (bridged) @ 4 ohms; ≤ 1% THD + N
Signal-to-noise ratio: 85dBA (reference 1W into 4 ohms)
101dBA (reference rated power into 4 ohms)
GT5-A402 Total Peak power: 240W
GT5-S422 Total Peak power: 300W
Frequency response: 10Hz – 100kHz (–3dB)
THD+N 1KHz LPF=22KHz ≤ 0.05% (rated power @ 4 ohms)
Channel Separation ≥ 50db
Input Impedance 15k Ω
Maximum input signal: 6.0V
Maximum sensitivity: 200mV
Hi-Pass, Low Pass X-over Limits 32Hz – 320Hz ±20% 12dB/oct
Bass Boost @ 50Hz 6dB
DC Offset <30mV
Output regulation: 38dB
Idle Current @ 4 ohms 0.46A
Max Current Draw ≤ 11A
Remote Operating Voltage 5V
Turn-on delay time 3 sec
Circuit Protection Temperature (85±5C), Short circuit, Operating voltage range (8-16V)
Dimensions: 2 1/8 x 7 1/2 x 9 1/4" (54 x 191 x 235mm)
Fuse: 15A
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.
GT5-A402, GT5-S422
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