The BAACH system is not just for being able to move one's head about. There is quite a bit of "room removal" happening.
The rooms upstairs at AXPONA are incredibly terrible, acoustically speaking. But the demo I got made the room virtually disappear, which meant I had a great experience hearing only the speakers. Just look at the photo above, no treatments behind the setup, a desk to the right within touching distance from the MLP, and all the rooms had a horrible resonance at either 63Hz or 77Hz, but none of this affected the sound I heard in the MLP.
Sitting outside of the sweet spot with the Janzen speakers, the sound wasn't very good, before or after the calibration, meaning, it sounded just like any other room that day with average speakers. But once I was in the spot that the system was calibrated for the sound improved immensely. Then, when I moved my head and the sound didn't change at all was just plain freaky good. The audio quality in that spot was great, and as long as the camera could follow my head, so did the great sound. And the camera had no problem following my movements in the range that's possible for me while sitting in a chair.