How come Horn + woofer designs are not more popular?


A couple guys on my audio discord really love the JBL synthesis 4367 and feel that all traditional 3 way tower speakers suck because they have poor bass response and are generally shy sounding. What I wonder is how come the majority of speaker makes do floor standers that are 3 way as oppose to the Horn +woofer design of JBL?

Is there any downsides to the horn + woofer design? Can a horn convey microdetail as well as a Be tweeter like say from magic A or S line? They claim 3 way floor standers are just trendy. But is there anything more to it then that?
smodtactical
I like horn speakers, but, not everyone, and this is ok. It is obvious the folks you are speaking about like horns. JBL makes horns for the home and professional market, and there are many more companies as well. What sounds good to us ? Each person needs to decide for themselves, and this is done by listening, comparing, and determining, what it is we like. And yes, horns can deliver the details, that are in our recordings. Enjoy MrD.
The 4367s are great but most audiophiles don’t want them in their living rooms because of their size and looks.

Klipsch is doing a great job making their horn speakers look cool. Nobody would confuse them for DJ speakers. 
I have a pair of Speakerlab 7’s that I found at Habitat. $100! A four-driver system - 12" woofer, 10" upper-bass, 12" midrange horn and 6" treble horn. Sealed cabinet painted flat speckled black. They look like a Heresy with an extra woofer on the bottom. And sound way better (I also have a pair of Heresy’s). Superior bass and much smoother mids and highs, thanks to the plastic horns! I am glad I found them - great for rock! I will sell the Heresy’s before the Speakerlab 7's!
Presently have them connected to a Bryston .5 preamp and 3B amp. SQ is truly excellent for a 30 + years vintage system! 
@mrdecibel : Eventually I will try the Speakerlab 7's with my First Watt F5 clone (Tim Rawson- built).