Only three manufacturers?


Playboy March issue states that speakers should reproduce the frequency, timing, and amplitude of the original sound. They state that most speakers get frequency and amplitude correct but only 3 manufacturers get the time coherence right: Vandersteen audio, Thiel, and Meadowlark audio.
What do you think about this comment and if its true are there any more manufacturers that get all 3 parameters.
eldo1968
Dunlavy, out of business also made speakers meeting this criteria, and Green Mountain Audio continues to make speakers with first order crossovers, and in their Continuum series also physical adjustment of the mid-range and tweeter with respect to the woofer to assure a time coherent wavefront at the particular listening positom for each room.
I believe that is the view of "The Audio Perfectionist":

http://www.audioperfectionist.com/

Given that a lot of what The Audio Perfectionist recommends seems to work for me, I wouldn't doubt this statement.

Perhaps other speaker manufactures may not consider time coherence necessary, desirable, or worth the trouble.