Looking for a little advice. I have a Denon 2809 running pair of rocket 850's and bigfoot and am thinking about a pair of QS 8's for my surrounds. I need to mount them on the side walls. My problem is that I am not going to have much room between the surrounds and back wall. The room they are going into has a cathedral ceiling that opens into a kitchen with a 9' ceiling. The seating area is right where the room opens up into the kitchen. How much will the placement close to the back wall affect the sound?

Thanks

Jim