Single driver loudspeakers

I should mention that there’s full range, and there’s full range. :) Some of the "full range" drivers actually use a mechanical crossover and tweeter, so you’d be really surprised how much has been done to stretch the technology.

When I design speakers though I try to get as much of the benefits of a single driver as I can. It’s easy to make a multi-way speaker and not at all easy to integrate the drivers so that they are not only measurably but audibly seamless. If you can tell where the speaker is, I call it a fail. This is not a problem single-driver (full range) speakers have to deal with. They do have to deal with the bass though. The usual compromise is to use a smallish driver, and rear horn or transmission line enclosure.

Still, I'm speaking outside my expertise. If you are really interested, come over to the full-range section in DIYAudio and you'll find many who will wave the flag. :)

Best,

Erik

Its not, best over all performance for widebands is the 6-8 inch consider fostex fe168esig 

Hello John,
What is your opinion/experience with the PHY-HP 12 inch driver? It has the reputation of being a superb driver. It was used in single driver designs successfully by Ocellia and Musical Affairs in their products.  97 db sensitive and 16 ohms load. 
Charles, 

Another variation is the "full range" four inch Jordan driver in a transmission line cabinet.  I wanna say Carolina Audio (among others) sells/sold this breed of animal.  I've never heard this type of speaker, but I once worked with a guy who owned a pair swore by it.

Check out Charney Audio, Somerset, NJ.  I own his Concerto horn speaker.  You can see my commentary on his web site.