RTIA1 Mounting and possible Omnimount 20

cwhyte

I have a 5.1 setup with Polk RTIA5s in the front and A1's designated as surround. My couch and chair are on the back wall. If I mount the A1's with the keyhole mount, should I mount them on the back wall facing forward (on each side of the couch/chair) or on the side walls facing aross the back wall? I do have one side wall that is partially open to the next room (six foot opening) if that makes a difference. Anybody have expeience using the Omnimount 20 for a speaker this size? Is the flexibility of changing the mounting angle worth it, compared to the keyhole mount against the wall? I plan to mount them about 5 feet above the floor, based on other suggestions I've seen. Thanks for any help.