On thing to consider, which I have done and actually continue to do, is to put the SR-3 on the back wall facing forward. I am actually running 2 pair, one on sides, and one as rears, on the back wall, facing forward. The are about 3-4 feet apart, off the center of the wall in back. I ran them this way in 5.1 without problems, and just recently added a second pair for sides. GIVE THEM POWER, RUN THEM FULL RANGE.
Dan
Dan