How to merge home theater with 2 channel


I currently have 2 channel but I just purchased a projector and 120" screen. What is the least expensive way to combine home theater with my existing 2 channel. I don't need it to be at the same level as my 2 channel, but I'm assuming I need to match the center channel with my main speakers? My 2 channel system: Jeff Rowland(JR) 625 S2 amp, JR Corus preamp that has home theater bypass, JR Aeris DAC, Bryston BDP2, OPPO BDP-103 Blu-ray player, and Monitor Audio PL500 speakers.
ricred1
Erik,
Thanks for the information. Yes, I currently stream Tidal from my Bryston BDP2. 
The only way I got the system to work 2 jobs is to get another system in another room. 
Same experience as stringreen. I managed to get everything to function but all my efforts to optimize the amazing sound stage my Avalon Acoustics speakers provide suffered a great deal from the presence of the display between the two channel speakers.

As soon as I dedicated a speperate area for the home theater I was able to better space all seven of the now matched speakers requiring much less processor room corection. The sound is better balanced which creates a far more seemless surround effect. I own a small collection of multichannel SACDs and they sound teriffic on the HT system. Understanably not everyone has the room to do this but I highly recomend the seperation if possible.
I run from pre outs on the HT receiver to an input on my stereo preamp and match levels (requires a microphone and set up program)

If your main speakers are of sufficient quality, consider going with a phantom centre channel.

This set up allows you to cross over higher than you would normally for your speakers (even if they have good low frequency extension) and redirect low bass to a dedicated subwoofer if you like.

Also, set up your stereo system to get good imaging and then leave them there for movie use.  This may limit the size of screen you can use.  If the spacing is closer together than you need for a screen, go to a sonically transparent screen and have the main spekers behind them (screen has to lower from ceiling)
I decided to add  an AV receiver and center channel. I will have them next week.

Wspohn,
I already listed my components in my original post.