4 Channel amp goes silent/turns off with increase in source volume

[Kalmah]

Well it is possible you damaged the amp when you reversed the polarity.

This is true. Despite both on-board fuses blowing when I connected the negative to the battery, this is a possibility.

I don't get it though, the rear channels can power the front speakers without throwing the amp into protect and at good levels with low audible distortion.

 

[Kalmah]

I found the following...granted the thread was from 2006.

http://www.diyaudio.com/forums/car-audio/82347-blown-amp-reversed-polarity.html

I'm not sure how technology has come along in 6 years, but my amp may have been affected by the amperage that blew the 2 x 40 amp fuses due to reverse polarity