Iam getting a popping from my hsu mbm or maybe my side surround. The subs are not being overdriven and it often happens when there is no bass. It seems only to happen when I listen to blueray's...never had this problem before. Not sure if its coming from both the mbm's or just the one or even the side surrounds, which sit underneath the side surrounds. Iam baffled...next time I watch a movie, Iam going to have to lay down next to the sub to see if its coming from the subs...Iam 99% sure it is from the sub. I even replaced the cable to see if that may have been the issue but it still popped. I also turn the auto on function off, thinking maybe its turning itself on during a movie and popping when a bass scene starts...not the case as well...Help 
