Question about Earthquake Sound PH-D2 Car Audio Amplifier

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Protection my amp goes into protection as soon as i power it up. If i had a schematic i might be able to troubleshoot it but i don't know where to get one from. The amp was going into protection after running it for aprox. 20 min. Any suggestions

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Check speaker load. You might try starting with a 4ohm load per channel. Only one speaker per channel and DON'T bridge. If it now works OK then you are on the trail of the right answer. Good luck. If it is a speaker load problem, then you need to correct this at once before you fry your amp. Good luck.

Posted on Jun 18, 2007

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Scroll down to "Get Manual" and click on it to download the schematic. At the site is also the preamp section as a separate schematic. You probably don't need that for the failure you are seeing. A lot of the tweeter drivers seem to get blown up, but once you test you will be able to find if the problem is in the amp or the driver.

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