Question about Earthquake Sound XTREME 900W.5 Car Audio Amplifier

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Sound from speakers muffle mid song

This is a wierd problem and can't track down the cause. I have a set of comps in my front door hooked up to the amp. Have my gain at about 3/4 and my HU volume at 40 out of 63. The system is pumping sounds great all of a sudden poof it gets all muffled and murky and muzzled, I don't know how else to explain it the sound gets lower and gurgled, then out of nowhere it'll come back to normal then back to muffled. I lower the volume a bit switch songs and it'll be ok then put it back up after a bit it'll happen again. I don't think it;s the speakers cause it happens to both sides at the exact same time and comes back at the exact same time.

Could this be a ground problem or a volatge problem at the amp? or some other kind of problem?

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  • stylez3 Sep 05, 2008

    Thanks for the reply. I am going to call earthquake tech support and see if I can send it to them or something to check since it's under warranty.

  • ishmailryan Sep 28, 2008

    same amp,same problem-so how did you fix it?

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  • 13 Answers

Assuming you've already checked all your wiring, it sounds like a problem in the amp circuitry. Would you say it happens when the amp heats up? I'm guessing an input opamp circuit is messing up when the amp gets hot. If you are electronically inclined you could open it up and look for a poor solder joint. Other than that you will likely have to get it professionally serviced.

Posted on Sep 04, 2008

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