alright, my passenger rear speaker sits up behind the seats on that rear panel. it sounds like its cutting out however even when i have the speaker cut off and just my subwoofer playing i still hear it making a crackling noise. [p.s. i know its not my sub crackling] so it may be the pressure from my sub shaking it making that sound. so really two questions. would that suggest my speaker is blown or could it possibly be the wiring or voice coils? and two is it possible to damage one speaker with another one just by them being close to one another?