I'm putting this in the audio section because I know the noise is coming where the subwoofer is. When I am playing my tunes I hear this constant rattle, sounds like the speaker is blown. My bass level is at C and it still happens. Upon further inspection I was able to determine that the speaker isn't blown. It sounds as if the casing around the sub is what is thumping/clanging. It is a minor annoyance. Wondering if there is anything I can do.