Full disclosure, this has nothing to do w/ my Jeep, but as you're all smart folks, I'm hoping someone will take pity on me and help me figure this out.
I was prepping the jet ski for a trip to the lake for memorial weekend. I have customer speakers mounted, powered by a small 2-channel amp, that is fed from my IPod.
This is my 3rd year having this sound setup and it's worked great (mostly).
Anyhoo, after de-winterizing it today, I plugged in the iPod and turned on the amp, just to make sure all was well. Well, it wasn't/isn't.
If I turn the volume up too high on the iPod or turn the gain up too much on the amp, I get a crackling sound from both speakers. The speakers don't appear to be damaged as they sound find at low/mid volume.
The system worked great the last 2 summers. I was able to crank it loud enough that I could hear it going 60 on the ski.
Also, I have a spare amp that is identical to the one on the ski. I hooked it up and the same issue occurred. I also use my iPod all the time so I don't think that is the issue either. I don't see any loose connections or corrosion anywhere either.
So at this point I'm stumped.