J.B.,
While i am not familiar with the specific phenomena you are talking about. I think it can be though of analytically. If you take your room for instance, I would venture to say that people who believe in this phenomena would say that your room is "over loaded" with your M80's as compared to the size of your room.
However, it appears as though you have several feet behind your 80's, as you have your sub behind the TV... Now, if you tucked your 80's in the back corner and turned them up, i think you would experience the phenomena your asking about.
However, i think it has more to do with the way (how loud) you listen, than the equipment used.
