Ok, after reading numerous post on the pros and cons of multiple subs, I decided to try it for myself. In one word let me describe my experience.....WOW. I have two subs up front for the .1 channel and a third in the rear using line inputs for the rears. There is soooo much low end info that is present that you would never hear with out either a full range floor standing speaker or a sub. I popped in TPM and heard it again for the first time. If at all possible try it for yourself and hear the difference! Im gonna listen to all my favorites again to hear the difference.