If I intentionally delay the subs just 0.5 msec (5 feet at sea level) You will hear and feel it easily when I switch back and forth. This puts 100 Hz 180 degrees out of phase right at the crossover point. Instant mess.
That is no longer phase sensitivity, that’s frequency response sensitivity, which most people are sensitive to. I was not referring to this at all, and that’s easy to show in any system.
Comparing Thiel and Vandersteen to otherwise frequency optimized speakers, such as Magico, Monitor audio, Revel, my own DIY designs or Fritz speakers, I do not hear a benefit in the former to the latter. That doesn’t mean they don’t sound different, but the only differences I hear are easily attributable to the frequency and amplitude, not phase. Sorry in this manner I am like Toole and the participants in several studies that have not shown phase alone to be audible.
As for the brain, yeah, so I’m not phase sensitive now. I don’t want to be. I don’t want to be more sensitive to playback systems than I already am. :)
Best,
E