Sloped baffle

Bifwynne,
unfortunately all of the companies stated in Unsound's post do NOT still make time-coherent speakers. (John) Dunlavy quit making his speakers long time back & I believe that he, unfortunately, is not with us anymore (correct me if I'm wrong but that's what I remember reading in one thread).
And, Meadowlark also does not make speakers anymore. Unfortunately there was something very unsavoury that went down w/ Pat McGinty (owner/designer of Meadowlark), his company & the location where he was making speakers.
Audiomachina also does not make time-coherent speakers anymore.
I was reading an old Meadowlark Osprey speaker review on enjoythemusic.com

The Meadowlark Mantra

Three design principles underlie every Meadowlark loudspeaker: time coherence, first-order crossovers and transmission line bass............

McGinty argues articulately on his web site that time coherence is essential to long-term musical satisfaction and avoidance of listener fatigue.....

http://www.enjoythemusic.com/magazine/equipment/0204/meadowlarkosprey.htm link provided if anyone is interested in the full review.

Bombaywalla, unless this:

http://audiomachina.com/philosophy/

is out of date, I think they still are.

Bifwynne, Unsound,
found this website of Meadowlark/Pat McGinty showing off all the Meadowlark speakers. I loved the looks of the Meadowlarks due to their superb wood finishes - always such a pleasure to see!
http://www.patmcginty.com/index.html

Bombaywalla, you are correct we lost two great proponents of time coherent speakers and both gracious gentlemen as well, John Dunlavy and Jim Thiel. R.I.P.

Hey guys I found this wonderful, very simple, animated essay from Pat McGinty (of Meadowlark) explaining time-coherence (in which he believed sincerely). Please read this (in the beginning he goes off the deep end relating the birth of the stars to time-coherence but please bear with him - he's trying to make a point:

http://www.patmcginty.com/Dbench2.htm