I listen to music with quite a bit of bass and yesterday my rear driver's side speaker in my car has started making a loud "buzzing" noise any time there is any bass playing in the music. It's fine for highs and mids its just the bass. What is causing this? Is my speaker blown/destroyed? Can I do anything to fix it? The car is a '88 Legend L with the BOSE system... I believe that the speaker in question is 6.5"... it's round anyways. Any help in this matter would be greatly appreciated..IT'S DRIVING ME NUTS!!