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I have a 2009 Ford F-250 6.4. It cam with the upgraded Kicker package for the stereo. My Passenger door speakers and sub quit working after about ten mins, or if the volume gets higher then 1/4 volume level. I had the NAV head unit replaced but I am still having the same issue. Any ideas
My old '09 had a factory amplifier behind the rear bench. I had a crew cab truck.
BTW factory speakers are garbage, I think I put 6x8s up front and rear which helped decently. The factory amp really does not do much for sound quality. Best to use something like a JL Clean Sweep to turn the outputs into preouts and run a real amplifier. I never got around to that as truck was totaled by some ****** with no license and no insurance.