Why not horns?


I've owned a lot of speakers over the years but I have never experienced anything like the midrange reproduction from my horns. With a frequency response of 300 Hz. up to 14 Khz. from a single distortionless driver, it seems like a no-brainer that everyone would want this performance. Why don't you use horns?
macrojack
Meanwhile, I hope to attend Capital Audiofest again this year in suburban DC. Horn speaker systems had a more than healthy presence there last year and delivered some of the best sound in show. Maybe I'll hear something that will up the ante like the custom GOTO horns did last year, but I suspect if I do that the cost (not to mention size) will be astronomical as well in conjunction and the benefits over what I already have marginal at best as well. We'll see....
I have a neophyte question. (I admit I have not read every
response in this thread, maybe it's been touched upon .)

For a smallish mid- or tweeter horn, mid in particular,
would it be desirable to coat the metal casting with
some kind of goopy damping/deadening material ?

I have some horn mids I bought long ago to experiment with.

Thanks !
Given that my Lascala's might not be the "perfect" horn system, it was amazing how much more I wanted to, and did, listen to music after aquiring them, and, with each and every modification. I still own many "other" speakers that have taken up space in 2ndary systems(sold more than kept), but the system that draws me in are the horns. Aquire a pair (Fortes are not much 2nd hand), although I prefer the Lascala over all other Klipsch at this respective price point. The bass horn makes a huge difference over others....Just my opinion. And yes, I have a child that went through college, as well as other bills, so I understand the monetary constraints.
I still see Lascalas around under $1k. Altec A7 to me the better design also under 1k. Altec model 19s about 1.5k, K horns about 2.5k. All good loudspeakers lots of other options in horns under 1k if you buy used, pro-audio or vintage.