There is a trick for subs. Put the sub where you sit and then go looking for the best spot in the room. That spot becomes your spot for the sub. Also I had my surrounds right where yours are. When I moved them forward that wall of sound from the TV improved along with the stereo effect. A bit less surround but a lot more stereo and my ears like that wall of sound effect. I little trial and error experimenting on your part is the best way to go. Let your ears be the judge.