Quick help...blown head unit, amp?

[FML 10+ year member]

On my way out of town...may need to pick up a new HU if need be.

So, was setting gain on my 4 channel, and bounced an RCA off the exposed fuse on my Rockford amp. Ever since, i have serious distortion and alternator whine thru front stage. Thought it could've shorted the RCA so i switched them, same isssue.

I have 3 preamps on my Kenwood,1 sub,1 front,1 rear. When I unplug the sub out RCA from HU ,no distortion. I switched the front end RCA and sub preout, same issue. I thought i could've done something to my Rockford bass amp, but i unplugged the power to the Rockford amp and ran the same test, with same problem.

Whats this sound like? Did i ruin my Kenwood? No big deal, ill buy a new one. But im hoping its not one of my amps. Thanks all

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[FML 10+ year member]

Oh and let me add, no whine or noise thru the woofer. Only thru the front stage while i have all the RCA s connected to my HU. Again, when I unplug the sub out RCA, it goes away

 

[big scott]

sounds like you shorted the rca input of the h/u ..

 

[FML 10+ year member]

Yeah, that's the case. I had a buddy let me throw his in to test. If anybody has info or a link for RCA repair, that'd be awesome.