2019 Ski Nautique 200 Speaker noise

[vegito]

We just purchased a low hour 2019 Ski Nautique 200 and there is feedback coming from the 4 speakers when the stereo is turned on. has anyone else had this issue with the JL Audio sound system? Is there an easy fix or something I can check? I would be a bit surprised if designed a relatively new boat with a ground loop issue.

[vegito]

Update: I unplugged the RCA cables from the amp and the feedback went away so it appears the feedback is coming from the JL Audio MM100 control unit. Has anyone had this happen or has an easy fix?

[MLA]

Make sure all the RCA are fully seated and snug, Unplug the RCA at the back of the MM100. Noise could be coming in on the RCA somewhere along their routing. Try a different zone output of the MM100.

[vegito]

Update 2: The issue ended up being the gain being too high on the amp. I just turned it down and the noise went away.