As of a few weeks ago, at least, Jeff hasn't seen the room in person to measure it and neither has Art. I do know, however, that Art hosted one audiophile interested in his system that brought a handheld measurement unit and reported that it was the flattest room he'd ever measured.
(I was lucky enough to spend 3 hours listening to Art's system from the sweet seat several weeks ago during a visit to Fort Worth, and I had heard various "pre-Jeff" incarnations many times before. "Wow" does not even begin to describe it. I've been a firm believer in room treatments as the single biggest impact on a system for a while now, and my interest in waveguides and controlled directivity speaker designs haven't changed that. They definitely help minimize certain room interactions, but do not eliminate them.)
On a related note, the design of Art's room specifically accommodated the radiation pattern of his line arrays. Pseudo point-source or controlled directivity speakers would benefit from some minor tweaks, primarily to the ceiling, I believe. They've also talked about subwoofer placements, as Art plans to experiment with some Rythmik subs. The last I heard, he is testing only two subs at the moment rather than the 3 or more Earl recommends, but I know the discussed placements were asymmetrical to even out room modes along the lines that Earl and others have discussed.
