Suggestions for high efficiency speakers?

You should definitely look into some of the offerings from Pure Audio Project.

Pure Audio Project

Like the Quintet 15 (if you have a large room), or the Quintet 10. Or maybe something in the Trio line.

Nice thing about these speakers (other than their sound quality), is they are sold as modules, so the choice of tweet/mids are flexible.

They have horn options, or Voxitive options, including optional field coil drivers.

And from my experience listening to them, is they seem to have a better focused image than most open baffle, high efficiency speakers. But that's just my impression.

@fosolitude,

You have a terrific Jota amplifier (And wonderful SOTA turntable front end) to build around. Your  15K budget allows numerous excellent options. Cube Audio Nenuphar is a terrific recommendation given your sonic presentation objectives. Definitely worth an investigation.

There have been consistent positive comments on forums regarding, Charney Audio speakers, Fyne Audio and Viking Acoustic peakers. The choices mentioned available with Avant-garde are intriguing. The Canadian Coherent Audio speakers are very highly regarded and quite easy to drive. Audio Note which you’ve obviously heard in the full AN room at the show.

You truly do have genuinely excellent choices before you.

Charles

Thanks everyone for your suggestions this gives me much to work on to try to hear all these speakers. I'm not in a hurry, the Josephs are great speakers, so I can do a thorough job of auditiioning these.

Forgot to mention I have a Velodyne DD15 sub

Given how much you enjoyed the Audio Note room at the Capital Audio Fest, I would suggest, of course, Audio Note speakers, DeVore 93 or 96, Charney Companion , Pure Audio Project, SoundKaos Wave 40, and maybe the Volti Rival.  While I like the Horning mentioned above, it is on the leaner side which is just the opposite of the ultra warm and rich Audio Note and DeVore sound.  Likewise, I would think a Zu speaker would be less to your liking.  But, you never know until you hear it, so by all means find a way to audition as many candidates as you can.