Why not horns?

I've been a Time Coherent "fanboy" ever since I first encountered and sold Dunlavy speakers about 15 years ago. And I'm just as passionate about that design as you guys are with horns. But, having a lot of experience with Avantgarde as well, it has always been a curiosity what would happen if these two principles were combined.

Here is a story about a friend of a friend who is attempting to do just that.
http://www.stereotimes.com/jimlangham.shtml

Mr. Langham lived for a long time with the mighty Dunlavy SC6 as his reference. Then he heard these Magicos and began the quest of combining the best of both worlds. The article doesn't mention this part of it. I only know because I know his friend who told me about it.
It might be an interesting article for all you horn guys though!
Cheers!

Anyone care to show distortion for horn speakers? Here they are for cone drivers:
Click on "Harmonic Distortion" button for Seas W16NX001

-50dB below the fundamental frequency... not too shabby.

I can see horns being lower distortion because the driver is higher efficiency so not being driven so hard for a given volume level but worse because of the horn induced reflections.

"Anyway, thats neither here nor there. Probably not the best choice of words to indicate that the idea of time coherency by design is exceedingly rare. To the best of my knowledge, only Vandersteen and Thiel on a consistent basis anymore."

Also OHM Walsh.

Even single driver speakers are not perfectly time and phase coherent. But close enough** to trick us into thinking they are.

** Subject to debate.

Cdc - I'm not well schooled in the matters you brought up just now but my sense is that you are demonstrating that an Aveo gets decidedly better mpg. than a Corvette. Of course, you are right but the parameters qualify the argument.

I recall you mentioning earlier that you listen at 65 db. Probably the areas where you find your single driver to excel are dependent on keeping the SPLs down. My average listening level is more like 85 db (still not very loud) and I suspect your single driver might keep up at that level in a small enough room. Mr.decibel would not get much of a bang from that approach, however, because he says he listens at upwards of 100 db., though I can't imagine how.

So, while specifications are very useful, even essential, they are dependent on circumstances and conditions that don't always appear on the stat sheet.

I'm pretty tempted by the logic and testimonials I read about with single drivers but I can't see them as a realistic replacement for my horns.