I moved my book shelf infinitys to the back wall 12 feet behind the sofa and it sounds awesome. Especially watching Stat Wars III.(ok i am a nerd) I just wanted to test the sound and my little JBL just didnt do it. I assume the QS8 will sound alot better from what I have read. Then I will put the infinitys back to the front, until they get replaced. Thanks for your help JohnK. I just didnt think the speakers would sound good being that far behind the sofa. If I were to use a rear center channel would I place that on the same wall behind the sofa? It is even worth it?