I agree, what you are doing is called passive bi-amping and is not worth it (IMO, flame suit on). How much space do you have behind you? You need about as much space behind as in front to get much benefit from 7.1.

http://www.thx.com/home/setup/speakers/71.html
http://www.thx.com/home/setup/speakers/dolby.html

In my room, I like having 7.1. It adds to the sound field or the envelopment. I have QS8's for both sides and rears. Later, I may try M22's for the backs....

Last edited by dewd; 01/17/09 07:47 PM.
Dave
Audyssey Setup Guide