I just got a pair of FXi30s for my home theatre. I am going to be installing them on the rear wall of the room. I was planning on making them about two feet taller than the couch to make sure the sound will be distributed equally. However I am curious as to whether anyone would suggest me placing them in a different location? I have an Onkyo TX-DS696 that is pushing my system. Any thoughts would be greatly appreciated.