Unfortunately the couch in our home theater is pushed right up against the rear wall and there are no side walls. That's the bad news; the good news is there are studs exactly where I need them. I'll probably end up mounting a pair of JBL S26II speakers(not yet purchased) facing each other on the rear wall since it's about my only option. The problem I see with this is that even though they'll be the proper distance and height away from the listening position, they'll practically be flush against the sheetrock wall. Will this cause any unexpected reflections or changes to the sound? Also, what mounting brackets are recommended? Thanks