Cube Audio Nenuphar Single Driver Speaker (10 inch) TQWT Enclosure

"...a bit lacking in warmth, a bit rough sounding in the upper midrange and had a pronounced peak in the treble range."

Interesting that the above accurately describes what I was hearing during the first 25 hours or so of playing the Nenuphars.  (Also interesting that during the first 5 hours of play they actually sounded better.)   I'm at about 55 hours now and will wait to 100+ to give further impressions.

@grannyring Bill, are you thinking about buying a full commercial unit, or building your own using the drivers? 

Buying a commercial unit.   I am not good with woodworking! I am thinking of the new Mini Basis due to the better bass response. 

I am wondering who else has heard various single driver systems and can compare the results.  I would love to hear something like the big AER system with the huge back-load horn and front wave-guide horn. 

I know that Classic Audio has a field coil model (T-8), but, I have not heard that one either.  I heard a Classic Audio prototype that used a fullrange field coil in combination with a woofer module.  In terms of vibrancy and immediacy, which I love about these types of speakers, it was fantastic.  But, it had a hard edge to transients and was very sibilant; a work in progress, but, I do hope to hear it with that issue tamed.

The other good thing about most of these fullrange systems is that they work so well with the kinds of amps I favor, which is low-powered amps.  I own three tube amps, the most powerful being rated at 6.5 watts per channel.  

If your hearing is that bad, just get some 901's.