What is your opinion of single driver speakers

I've heard only a few truly single driver speakers whose overall performance was pretty good with all types of music.  One is the Charney Companion speaker with the AER driver, the other is a Voxativ speaker.  I also recently heard a Songer single driver system that sounded very good, but, I did not hear them enough to decide whether the Songer single driver or Songer full-range with woofer model was better (amazingly, they are the same price). 

But, I've heard many truly excellent systems that used full-range drivers in multiway systems.  I recently heard a Voxativ two-way that sounded really good, I like the Cube Audio Nenuphar Basis (10" full-range plus a built in subwoofer), and I like the bid Dolce Vita system with an 8" full-range driver plus a tweeter.  I've heard a few custom-made systems that also ultize a full range driver with a tweeter or woofer, and liked them too.  

In some respects, co-axial driver speakers, like Tannoys, have similar sound as systems employing full/wide range drivers—a vivid, lively sound.  But, most full/wide range speakers have higher efficiency, making them better suited for use with low-powered tube amps (the best sounding amps), and tend to be better at low volume.  Still, a Fyne F 1 coaxial is a speaker worthy of serious consideration.

fosolitude,

I wish Charney would return to Capital Audiofest.  For the two years they were at the show I thought they had one of the best sounding system there and for a relatively decent price.  I heard the Companion model with Voxativ and AER drivers.  I liked both drivers (I did not hear them with Lowthers), perhaps the AER a bit more because of its top end extension.  Either way, a remarkable system.  I preferred the Charney over the Cube Audio Nenuphar full range system at the show (smoother, more natural sounding frequency balance), but, it would be interesting to hear them against the Cube Audio Nenuphar Basis which employs a built in powered woofer with their full-range driver; this was a terrific sounding system I heard a bit more than a year ago at Capital Audiofest.