Thanks for the replies. I have the space. The center is a Focal 700 which seems to integrate seamlessly with the CS2's. I am using an NAD T955 5 channel amp and it is not breaking a sweat driving the 2's and Focal. Everything is playing nice together, using a Yamaha 700 Aventage as a pre amp. The system sounds very good. My wife comented on the amount of detail not previously present with the AVR's as the only amplification. With the NAD all the speakers have come alive. I am the original owner of the CS2's, (1986), so I am aware of the challenges they create for amplifiers. My NAD experiences tell me the 955 is a good match to the Thiel set up. If for some reason the NAD struggles, (which I doubt), I can always go to a Shearbourne, Marantz, Parasound or Rotel power amplifier. The reason I am so confident in the NAD, I listened to Tom Waits "Used Songs" cd through the NAD + CS2's ... Tom never sounded as good as he did this time!! Let you know how this Gumbo of vintage equipment impersonating Home Theater works out once I have it all in place.