Longtime reader first time poster. The bass in my 2002 A8L (Bose symphony II stereo) is M.I.A.. There is absolutely no bass coming from the rears and whatever is coming from the fronts is weak (if there at all). Is there a known fuse issue that would kill just the sub? I opened up the panel beneath the rear right speaker which revealed nothing of use... if thats where the sub is it didnt seem accessible in any way. Any help/suggestions would be GREATLY appreciated. Anyone have a similar experience? If this issue has been addressed in a previous post I apologize - I really did look.