My stock stereo makes a very loud squealing sound when I go to turn it on, even with the volume turned right down. I was told that it is a blown speaker/amp. If one of my speakers was blown would it make this loud sound? Thanks for any input.
I believe that all the amps fail at some point so it is time to repair all 3 of your amps. I would not be surprised to find out that your Sub amp is dead and you don't even know it.
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