[GaryProtein]

Thank you all for your comments.

David, I was hooked on those speakers when I first listened to an earlier version of the IRS when I couldn't afford it. They really do reproduce a wonderful sound stage. The sound really appears to come from the entire front of the room, not the speakers. Mike Kaye (RIP) at Lyric HiFi was very kind spending time with me listening to them with the Goldmund TT and Jadis amps.

Bob, the sweet spot is really quite large. Moving around the room, the sound staging doesn't change very much at all. The MC602s and dedicated woofer amps give them the power to really shine. The world is blessed to have Arnie Nudell.

The only real "tweak" I have on the system is using the Pass Labs active crossover (thank you, Nelson Pass). This allows tri-amping the system so the woofers, midranges and tweeters are directly driven by their own respective power amps.