Man. I wish I could make these meetings. One of these years when my kids are older I'll be able to free up and make it.
One thing that came to my mind. What kind of Bi-amping was employed in the set-up during the meeting?
Was it a solid state amp for the bass of both speakers and a tube amp or a different SS amp for the highs? The other Bi-amping I believe is when you use 2 of the same stereo amp and each amp has each of it channels power both the lows and highs of each speaker. I don't remember exactly.
Something like this:
Was all cabling the same on both the highs and lows or was a silver type speaker wire used for the lows and copper used for the highs?
The reason I ask is that one day when I had all my amps at the time out I decided to have one solid state Class A/B type amp power the lows and another pure Class A solid state amp power the highs of my KEFs. I wasn't able to bypass the speakers internal crossovers though. Speaker cabling was all the same. When I let everything warm up and played music everything just sounded off. Sound stage and imaging seemed out of whack. I then tried DH Labs speaker wire for the lows and some budget OFC speaker wire for the highs and the music was still off but the bass was a tad more boomy.
Everything was connected right but the music didn't sound right no matter the adjustment. I then tried a lower what tube amp for the highs rather than the Class A SS amp and music was still off. I couldn't do the other kind of Bi-Amping as I didn't have 2 of the same amp so I called it a night.
I wonder if Bill's system encountered the same issue I had but on a bigger scale because of the gear in his system. My system was with older stuff and budget cabling.