Hi Guys, I have a question for the group and I'm looking for confirmation... Right now, my fronts are Axiom, M60's and a VP 150, and my surround speakers are Cambridge soundworks di/bipole and they are mounted high and at the sides of the listening position. The 5.1 setup is very good, but I want to try and go 7.1. Now I have an older pair of Cambridge soundworks surround II's that I had before in a smaller room, and I was wondering if I add them on the back wall if that will help with envelopment. Also because the sofa is on the back wall will it help? I also found a document on the web on how to properly position the dipoles for proper back wall 7.1 setup. Do you think I should do this or stick to 5.1? Also my receiver is an older Pioneer Elite 54TX that has 7.1 output including THX surround EX. Thanks, and keep me posted.