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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

TROUBLESHOOTING

TECHNICAL SPECIFICATIONS

SCHEMATIC DIAGRAMS

CONTENTS

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2
3
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Summary of Contents for GX-A604

Page 1: ...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 LIS...

Page 2: ...ttery s terminal Do not install the fuse in the holder at this time 3 Route this wire to the amplifier s location and connect it to the amplifier s 12 V terminal Be sure to use appropriate grommets wh...

Page 3: ...ther or the other terminal at both the amplifier terminals and speaker terminals Touching wires can cause a short circuit that can damage the amplifier GX A604 speaker connections 4 Channel operation...

Page 4: ...puts to the amplifier s inputs as shown in the illustration Source Unit Front Line Outputs Rear Line Outputs See Set The Crossover Controls on page 20 for information about setting the amplifier s con...

Page 5: ...terminals Connect the subwoofer to the RL and RR terminals The rear channel Bass Boost control makes the rear channels preferable for subwoofer connection See Set The Bass Boost on page 23 NOTE You ca...

Page 6: ...Use a Y adapter to connect the source unit s subwoofer output to the amplifier s rear left and right input jacks Source Unit Front Line Outputs Y Adapter Subwoofer Line Output See Set The Crossover Co...

Page 7: ...GX A604 speaker connections 2 channel operation Minimum speaker impedance 4 ohms each Connect the left and right speakers as shown in the illustration below Speaker Fuses 20A Left Speaker Right Speak...

Page 8: ...front left and right input connections and make sure that the Input Mode switch is set in the 2CH position Source Unit Front Line Outputs See Set The Crossover Controls on page 20 for information abou...

Page 9: ...and speaker connections have been properly made Check that the amplifier s Level controls are not turned all the way down counter clockwise Check that the vehicle audio system s source unit s volume c...

Page 10: ...mation about setting the Level controls Sound in the front rear speakers is distorted Make sure the amplifier s Crossover Filter switch for the distorted channels is set to HP Set the Crossover contro...

Page 11: ...oise 2 V 4 ohms 75 dB 75 dB 75 dB Effective damping factor 4 ohms 50 50 50 Frequency response 3 dB 20 Hz 20 kHz 1 dB 20 Hz 20 kHz 1 dB 10 Hz 320 Hz Maximum input voltage 20 V 20 V 20 V Maximum input s...

Page 12: ...GX A604 packing list...

Page 13: ...Amplifier inputselector variablecrossover A A2 A1 Pitch 2 5mm INPUTSENS 0 2V 4V C1 C2 C4 C5 LP FLAT C6 3 ch L out 2 4 3ch L input Class AB Audio Power Amplifier inputselector variablecrossover 1 2 3...

Page 14: ...CN5 130223000018 GX A604 2 1 RCAA 120203000083 4 3 RCAB 120203000083 6 5 RCAC 120203000083 8 7 RCAD 120203000083 R13C 0R FL 2CH RL 4CH RR 4CH FR 2CH R15B NC R15A NC 1 2 3 4 5 6 7 8 9 10 CN1 1302530001...

Page 15: ...E Q203 2SC1815 R235 47R R239 6K8 1 2 R234 47R B C E Q202 2SC1815 Q205 2SA1015 Q204 2SA1015 R237 47R R236 47R R238 6K8 AMP Q209 2SD669 Q208 MPSA13 C235 104M R247 3K3 R248 5K6 Q206 2N5401 Q207 2N5551 C...

Page 16: ...5K6 Q406 2N5401 B C E Q407 2N5551 C431 100P R446 47R R449 47R C432 100P R456 680R D401 4148 R459 4K7 Q413 2SC1815 C436 104 A K D403 1N4148 Q410 2SB649 R457 680R A K D402 4148 R460 4K7 R458 4R7 0 25W C...

Page 17: ...30123000121 R178P 2 2K R179P 2 2K C25 102P C23 102P C20 104 M C145A 2200U 35V R3P 10K C146A 2200U 35V CA125P 104P C10P 104P 3 4 8 6 5 1 2 7 T1 200403000091 RB1 10K E C B Q32A 2N5401 RB4 10K RB5 4 3K R...

Page 18: ...VR4C C100K 10 11 12 VR4D C100K HP RR LP RR FULL RR 3 2 1 4 SW3A 110103000062 7 6 5 8 SW3B 110103000062 9 10 11 12 SW3C 110103000062 9 10 8 U8C TL074 6 5 7 U9B TL074 R56C 22K R57C 7 5K R60C 15K R61C 1...

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