i am surprised that nobody who attended the show, is commenting upon the magnepan room.
i heard the sanders hybrid years ago at THE SHOW. the panel was amazing, but i heard a discontinuity between the bass panel and the panel.
i believe the problem is dispersion. the dispersion of a cone differs significantly from that of a panel.
also, the cross over point could be a factor.
i have heard other hybrid designs, but all have a problem in coherence. they sound like two different speakers. i suppose many will argue that some hybrids have a seamless transition between drivers, but i believe i can identify hybrid speakers, even with a blind fold, or with my eyes closed.
and cone bass do not sound the same.