Constant popping noise from rear speakers

pita141_170153
Fri, 21 Aug 2020 18:06:19 +0000
Maintenance/Repairs

2012 Lincoln Navigator -L
Just bought this car two days ago. Dealer told me that he knew the part that was needed to fix my “silent” radio. He took a very decent (or that’s what I thought at the time) amount of money off of the price. What can I say, I’m a sucker, but I’m willing to work hard and fiddle.
Got home, checked things out, and the fuses to the amps are missing. Genius that I am, I replace the fuses. Now, the radio “works fine,” however once I get to the accessory stage of turning the car on, the rear door speakers and the rear subwoofer (these I know are doing this) make a constant popping sound. Sound happens when the radio is turned on, it happens when the radio is turned off. It’s the same volume popping sound no matter what volume setting the radio is set at.
Tried unplugging each rear door speaker and subwoofer one at a time, but they all do it regardless of what else is going on.
Took out the main radio head unit, and really checked out the wiring around the amp, and radio. Everything there looks good. Had the radio on, and jiggled all types or wires, and doube-checked each connection, everything is consistent at least. No movement changes anything with the popping.

Please help, it’s really driving me crazy.

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