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Message: <blockquote data-quote="blert" data-source="post: 1048723" data-attributes="member: 64702"><p>Yeah, I understand JCV is kind of a "budget" option but it's not just on unused input, it on all inputs all the time, including FM. I talked to JVC, Crutchfield, an in-town car audio pro, r/CarAV: it is so far unheard-of. Last night I did find some info in the DIYaudio community. Some of these guys make their own bluetooth speakers and a few of them have had the exact same issue. From the replies they got it seems to point to a cheap bluetooth module and the way the module shares a power input with the internal amp. It looks like JVC forgot to use a proper DC-DC isolator when they stepped down the power to the Bluetooth module to 5volts and/or a proper EMI filter before the internal amp. No ammount of anything i can attach to it will solve the problem, it is internal to the unit and a design problem. This is what you get when you have to cut costs to keep the price down. Anyway, Crutchfield has a new Pioneer heading my way.</p></blockquote><p></p>