really useful thread this, help me make my final decision about speakers placement, well almost.
My current setup (I have a 7.2 amp) is a standard 5.1 with front left/right, center but I cant have side surrounds as I've got a small room so my surrounds are on the wall right behind my head. Where this isnt ideal it seems to work ok, I just drop the volume a little and it evens it all out.
I decided to use my spare two speaker slots for some ATMOS love but I really, really didnt want to faff about getting wire up to the ceiling and cutting holes. So after reading this thread I thought it try the easiest option first, two height speakers.
My speakers are Mission M3, before you laugh I have a smallish room and they sound great, where I have my Sub placed I also get loads of lovely low end so I'm super happy with their compact package.
I've positioned my height speakers about 3 inches from the celing on the same wall as my fronts, I have also found that If I point them up slighty the sound travels right along the celing and the overhead effect sounds everywhere and not just top front.
I now wish i'd got a 9.2 amp as I can really hear the benefit of the height speakers on the helicopter demo, its just a shame I cant hear it moving back and forth, front to back or round in a circle, just left to right but like some have said, its a massive extra chunk for a 9.2.
My amp is denon AXR2200, vey happy with it.