It could be a loose or maybe a corroded wire/connection or maybe the speaker just got damaged? Have you tried to play with the bass/treble buttons to see if you can make it sound better? Might be able to just get a replacement speaker from a junk yard.
I went through that whole car stereo/speaker thing years ago...now it's AM ESPN radio on a regular basis so I hear all kinds of static and noises no matter what I do.
I went through that whole car stereo/speaker thing years ago...now it's AM ESPN radio on a regular basis so I hear all kinds of static and noises no matter what I do.