Distortion in tweeter from amp issue

[therealjroc 10+ year member]

Ok so I have a JL 360/4 amplifier. My rear right speaker tweeter started distorting, like a staticy noise at certain frequencies. So i figured it was a blown speaker since they were getting old. Replaced the speaker, same problem.

So i swapped the rca's around on the input side of the amp, and every rca still made the noise on that channel. So Hu is good, and rca's are good. Then I swapped the outputs around to the speakers from the amp and that tweeter sounds perfect on a different channel, other speakers sound bad on that channel as well.

With all that said it looks like an issue with the amp to me. Any ideas what I should be looking for when I pop it open? Any info would be awesome! Thanks.

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[bradl79 10+ year member]

Mine does that too, mine is BC the internal amp in the hu causing this, mine was just fine until I tried to set crossover points with my hu instead of amp, now I can get rid of it, I am going to try to do a reset on my hu and disconnect the power from battery to reset everything

Mine are on random songs also, same song but not on all songs mainly acoustic songs