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Infinity Reference 5760a amplifier. The problem is definitely in the amplifier (I've switched inputs and outputs to locate the problem). The front right output will intermittently go from normal to low to no output. Most of the time, it has little or no output. I'm not scared of electronics, so if someone could point me in the right direction as to what to look at inside the amp, I'd appreciate it. I am the original owner and have only used to push Infinity Kappa and Reference speakers.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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techman
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SOURCE: amp install disaster...?

Try first to disconnect all of the speakers on the amp. See if the amp will turn on now. If not , the amp has bad output devices, or drivers, and or the switch mode power supply is fried. There is no easy fix with solid state elctronics as there are no user serviceable parts inside. The units going to need to be repaired by a service tech unless you know how to solder, unsolder, test mosfets, transistors, and diodes as well as resistor.

Posted on Sep 22, 2006

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SOURCE: amplifier not working

i agree put in a repair shop or send it back to manufacturer

Posted on May 06, 2007

trintek
  • 111 Answers

SOURCE: Car stereo crossovers

you should be able to remove the passive in-line crossover, but since it is blocking everything below 3500 hz, there is no need. leaving the passive crossover in place will also help protect the tweeters if something fails in your setup as any amped frequency below 3500 can seriously damage them.

Posted on Nov 17, 2007

  • 2 Answers

SOURCE: JENSEN XA 184 AMPLIFIER

Looking at amp pin no.1 (top row on left, closest to the GND terminal) from left to right
{ output } { input }
[FL-] [FR-] [RL-] [RR-] [FL-] [FR-] [RL-] [RR-]
[FL+][FR+][RL+][RR+][FL+][FR+]{RL+][RR+]
{ output } { input }

Posted on Nov 20, 2007

  • 12 Answers

SOURCE: Eclipse PA5532

I do think you can knowing your Amp is 5channel and 960watts,Yes you can goto radio shack for the potentimeter or goto your local audio store and buy a equalizer So you don't over power your Amp

Posted on Nov 22, 2007

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b631491.jpg

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Hello pianopeter, I have the same amp with the same problem but only when the crossover mode switch on the front channel is set to low pass or high pass. Have'nt fixed that yet cause when I got the amp and put power to it the clip and protect lights would flash back and forth. I turned out to have 2 bad output transistors on the right front channel, I replaced them and amp works great now. Then when I was doing final testing I switched the crossover mode switch to lowpass and your problem occured. I do believe the problem is in the removable board which controls the controls the crossover and input to a point. Try moving the crossover mode switch to flat on both front and rear and let me know if amp works fine that way. I'll be working on this problem soon but would like to know if your problem changes if you move the switch to flat. Please leave me a message as soon as you find out cause this will aid in the process of me fixing problem. I am an electronics tech and buy and fix broken amps all the time so I have a really good knowledge of car amp repair. Once again let me know ASAP, Thanks

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Amp install disaster...?


Try first to disconnect all of the speakers on the amp. See if the amp will turn on now. If not , the amp has bad output devices, or drivers, and or the switch mode power supply is fried. There is no easy fix with solid state elctronics as there are no user serviceable parts inside. The units going to need to be repaired by a service tech unless you know how to solder, unsolder, test mosfets, transistors, and diodes as well as resistor.

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