JBL GX-A604 Service Manual

Service Manual
GX-A604
435-Watt full range 4-channel car power amplifier
Released EU2015 Harman Consumer Group, Inc. Rev 0, 00/20XX
8500 Balboa Boulevard
Northridge, California 91329
OWNER’S MANUAL 2
TROUBLESHOOTING 9
TECHNICAL SPECIFICATIONS 11
PACKING LIST 12
BLOCK DIAGRAM 13
SCHEMATIC DIAGRAMS 14
CONTENTS

JBL GX-A604 Specifications

General

Signal-to-Noise Ratio (SNR)	93 dB
Number of amplifier channels	4 channels
Frequency response	20 Hz

Summary

Ground Connection

Power Connection

Speaker Connections: 4-Channel Operation

Input Connections: 4-Channel Operation

Speaker Connections: 3-Channel Operation

Input Connections: 3-Channel Operation

Speaker Connections: 2-Channel Operation

Input Connections: 2-Channel Operation

Troubleshooting

No Sound (Power LED Off)

Troubleshoot no sound issues when the amplifier's Power LED is off.

No Sound (Power LED Orange)

Troubleshoot no sound issues when the amplifier's Power LED is orange.

No Sound (Protection LED Red)

Troubleshoot no sound issues when the amplifier's Protection LED is red.

Further Troubleshooting

Partial Speaker Output

Diagnose and resolve issues where sound only comes from some speakers.

Low Volume Output

Address low volume problems even with maximum source unit volume.

Distorted Front/Rear Speaker Sound

Troubleshoot distorted sound in the front or rear speaker channels.

Distorted Subwoofer Sound

Diagnose and fix distortion issues with the subwoofer output.

Specifications

Packing List