The front stage are ar phantom 8.3's and have 8, 5, tweeter, so should the center have 8, 5, tweeter, or did i misunderstand that. I have another set of 8.3's that i want to use for the rear surround but i don't have them connected yet. i have the 6.2 also from AR that are the rear surround. i just upgrade my receiver from yamaha htr 5.1 series to the rx 7.1, so i didn't have cables run for the additional rear speakers. i am planning of running them this weekend.
The yamaha rx receiver has a extra set of output for presence speakers that go behind the front stage speakers, should those be installed or are they not necessary. That is another problem.