In-Wall RCi85 Surrounds with RTiA7 and CSIA6 Fronts/Center?

JDVirginia

Greetings.

I am a newbie who just orded the following Polk Audio from Crutchfield while taking advantage of an online offer discount of $300 towards a subwoofer. My configuration, including video components is as follows:

Polk Audio RTiA7 Floor-standing Speakers
Polk Audio CSiA6 Center Channel Speaker
Polk Audio DSW Pro550 wi Powered Sub
Polk Audio RC85i Pair 8" 2-Way In-Wall Speakers (2 Pairs for Side and Rear Surrounds)
Receiver: Onkyo TX NR708
Epson 8700UB Projector
Da-Lite/JKP 110" Screen.
Blue-Ray Player - TBD

My main objective is to watch movies, sports with some occassional concert watching/listening for this room. I decided that in my dedicated home Theater of about 13'x20' I preferred the better sound of the floor standing and external center channel that also would not result in loud sounds on the other side of the theater wall where I have a pool room. But I also was worried about cluttering up the walls elsewhere in a relatively narrow room and so I went with in-wall RC85is for side and back surrounds. BTW the RC85is are a great deal right now at $169 a pair and this provided me a near term approach towards building out my 7.1 system that does not break the bank. If later I decide these in-walls are not great, I can move them to other locations in the house. Here is the first and major question: The usual consensus on other threads is that surrounds are not that big a deal when it comes to timbre matching. My fronts and Center are Timbre matched. But as I never saw anyone attempting this type of combination of Floor Standing/External RTi's matched with -in-wall surrounds I am seeking input from someone more knowledgeable than me as to whether this is likely to work out well.

My receiver is THX capable, I decided not to make a big deal out of THX for now but if anyone has an opinion on whether I can utilize the THX capability in any way with the given configuration, let me know please.

Thanks much in advance!

MADGSF

Welcom to Club Polk!

That looks like a nice setup. Although the TCI series speakers are timbre matched for you RTia front speakers they should work fine. I run the speakers in my signature with in ceiling speakers of a different make and they work fine. As far as THX goes that is just a qualification the AVR goes through. To a lot of people, me included, it does not mean a whole lot. To be official "THX" you simply need to set all your speakers to small and set the crossover at 80Hz. If that receiver has an automatic setup I would run that, see what it sets everthing too, then listen to see if you like it and adjust if needed.

JDVirginia

MADGSF,

Thanks so much for your insights. It is helpful to have some feedback. I am taking some things step by step and will probably be asking questions (perhaps starting a new thread) for such things as adding am AMP, whole house sound, what blue ray player, etc. I wired my house myself for whole house sound and now I need to learn such things as what sorts of amps, what configurations will work together and drive how many zones, etc. Thanks again!