Amp problem: Alpine 5 channel MRV-F357 cutting out and fuzzy

[Christo19 10+ year member]

Amp problem: Alpine 5 channel MRV-F357 cutting out and fuzzy

I have this 5 channel amp doing some odd things. The battery is charged on the car and grounds are good, I have grounded the amp to the battery directly.

Problem is that when I hook up a speaker it will sound very fuzzy/distorted, also very quiet. Randomly it will sound a little better and kinda normal but then they will cut out and stop playing then continue randomly.

It feels like the amp is getting kinda hot too. I have a normal green power light, I have tired playing with the gains and all settings with no luck. I hooked up a different amp to the battery, rcas, remote and speaker and it worked. I tried different fuses also with no luck.

Any ideas on whats going on? I really want this amp to work and hope its not too messed up :/

thanks guys!

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[trumpet 5,000+ posts]

Is your battery to body ground good, going to shiny bare metal with a bolt and not a self-tapping screw? What voltage do you measure at the +12V terminal of the amp while music is playing?