What he said.
My 2 cents: I have the QS8s mounted directly behind and above (about 3 feet about ear level) with the T bracket flush to the real wall.

Superduperawesomeamazingwow. I forced a friend to sit in the sweetest spot and watch part of The Bourne Identity last night. He said "How does it make the bird sound like it's over there when there is no speaker there?" Even though they are placed poorly (according to THX standards) they still do an amazing job.

jr

"What can be asserted without evidence can also be dismissed without evidence." C Hitchens