How about a list of speakers that are time and phase coherent? Thiels and what else?

Intuitive Design Summit Loudspeakers are time and phase coherent and do things that very few speakers I have heard are able to do.  Still one of my all time favorite speakers.  I wish more manufacturers paid attention to this.


Here's a nice article by Richard Hardesty.  I didn't see it previously listed.  Apologize if it was.

From my listening experience, I'm a big believer in time and phase coherence in speaker design. 

https://www.vandersteen.com/media/files/APJ%20Files/APJ13_Proof.pdf

@ musicloversaudio

Wilson audio

The biggest hoax in the industry. And the dealers believe that… How sad ☹

Acoustic Zen loudspeakers are time and phase coherent. Robert Lee has a white paper on the subject. 

In addition to great speakers, Green Mountain makes good coffee.

ATC use phase correction in their active speakers. The overall result approaches linear phase with smooth phase behaviour across the crossover. No speaker will be perfectly linear phase as mechanical drivers aren’t linear phase.

That said, minimum phase filters and MQA are best avoided as they introduce significant phase distortion by delaying the arrival of high frequencies vs low frequencies. The characteristic effect of MQA is most noticeable on the plucking of guitar strings which sound disconcertingly unnatural - the transient of the string being plucked seems to start at a lower pitch than is natural. Minimum phase filters and MQA muck up natural timbre - hardly surprising given the way they shift phase around.