they would be mounted to ceiling joist with proper mounting brackets...I have 2 that are behind each end of couch, angled in on floor stands and the other 2 would go on floor joists with mounting brackets, also not sure of best placement of those, directly over head sound coming straight down, few feet in front of couch, behind couch???

Sharp Aquos LC60LE650U/Onkyo TX-NR5010/Axiom M100/Axiom VP150 v2/Axiom EP500 v2/Axiom QS8 v3