That once in a million chance- happened to me: both pairs of powered speakers died

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Each time one was replaced it cost me $12 and about an hour R&R time! You can clean them but the problem will return pretty quick, it is best to just replace them. Sealed pots which some use really can't be cleaned!

Most of the time the issues will be popping and cracking when they are adjusted, and drops in volumes from time to time while in use, along with a pop or crack!

Sounds like that's what's going on here. That's relieving to hear it's a minor issue. Granted the eons are 5-6 years old and for that to be the only issue with them after that many years of use, I'm proud. Of course, I take good care of my toys.