I'd like to complete my set up in our family room of 16'x21', which goes 15' further back to the kitchen. Ceiling ht is 9'. The 65" TV is hung on the middle of the 16' wall and flanked by a pair of RTi8's with a CSi3 center. I'd like to have ceiling side and back surrounds due to the lack of wall space for the on-wall surrounds. Here are my questions?
1. Will TC80i be a good match? Am I better off with the cheaper TC60i which has the same 6.5" driver as the RTi8? I'm pretty sure that both of these are timbre matched with the RT8i. Subwoofer will be coming once I know what is right for this large space.
2. I have never done ceiling install. The master bedroom is directly above the family room. The ceiling does not have any insulation. The joists are 16" apart and about 16" tall. I read in this forum that polyfill is important to absorb the unwanted sound from the back of the speakers. In addition, it helps to block some noise to the bedroom above. Do I just fill the entire joist space (16"x16"x16ft)? That will take a lot of polyfill! Does it matter that the polyfill comes to direct contact with the wiring and the back of the speakers? Is it better to line the cavity with some type of sound proof mats that I've seen in car shops?
3. I used to have a 6.1 set-up with only one back speaker at my old house. Do I need 2 back speakers to take advantage of the Bluray audio? Currently, I only have a PS3 and I have no idea if it can output signals to a receiver for 7.1 processing. There is only one wire going to the back. I can pull another wire through but it will be a pain.
4. The current ceiling wires are 16-gauge CL3 rated speaker wires. Are they adequate for these 30' to 40' runs to the TC80i/TC60i's?
Sorry for these primitive questions! Thank you in advance.