Hello All, I was watching fight club at reference level (REALLY LOUD) and in many MANY of the scenes, my sub made VERY strange noises that I had never heard before. The noise was not bass sounding...it sounded like a person blowing air out of their "closed" mouth. I think that I may have popped it, but here is the strange part: My subwoofer has a volume knob that has a lot of range. I have the subwoofer volume knob set at 1/4 of the total volume that it can go. Can a subwoofer pop if you have it that low?? It's not that loud...it could have gone much louder!! Another weird thing. After playing music, the subwoofer is NOT making those weird sounds anymore...playing perfectly. I'm very scared of playing Fight Club again, because I fear that it will damage it more. How can I tell if my subwoofer is Popped FOR SURE or not?