Don't give up on the QS4 yet. How much room do you have between the top of the window molding and the ceiling? I have 12" for all window and door moldings. My right surround is mounted above the door, giving 6" clearance for the top woofer to bounce off the ceiling (it would be a little too tight - only 4" - with the QS8). Both QS4's are 13" from the rear wall.