If I mount the Q's about 3 feet above my head that will give me around 8" from the ceiling. I can get only get about 2 feet to the left of the couch, but about 4 feet from the right. It's a maze of doorways and HVAC boxes down there.

I think I'll try several positions and see what works best. I can't imagine I'd get a set of the Q's home and send them back after 3 weeks, considering how happy I've been with my other Axiom speakers.