amp help

[w0lv3121n3 10+ year member]

I just purchased an alpine mrx-v70 5 channel amp

its wired with a 4awg power cable with 60 amp fuse and 4awg ground as well

I have an alpine cda-9886 headunit with alpine front speakers and polk rear speakers

i have all 4 channels and subwoofer connected to the amp.

it plays perfectly fine and low volumes but once i start turning it up the signal seems to cut out.

the amp is still on, looks perfectly fine.

once i shut the headunit off and start it again, the sound will come back out, until i turn it up loud again

any ideas whats going on?

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[keep_hope_alive Premium Member]

likely the speaker wires on the head unit are shorting out. turn off the internal amp and properly cap the speaker wires (individually)