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

@charles1dad Thank you for your comment. I had been planning to write a post on this for some time but I suppose I needed a nudge.

@stephendunn I’m not sure I can be of much help in acquiring these. I originally spoke to the US dealer about the EHTs (Audio Arts in NYC) about 2.5 years ago. At that point they were $15k retail but there was no demo pair to listen to (that might be contributing to the obscurity of these amps.) I wound up finding a pair at a more reasonable price after a very long wait but I’d rather not go into the details online (not to be secretive, just respectful of others involved). I don’t know what the situation is now with Thoress’ US representation but I expect that the price has risen. The amps have changed slightly too (since Ebaen's review) - they now go up to 50w as the Positive Feedback piece mentions (40 before) and the color is green rather than black.

@jollytinker  Thanks for your response.  Reinhard Thoress just responded to my inquiry via their website, which he says is sorely out of date.  He does offer the newer version of the EHT monos for 12.950 Euros and an integrated version for 8.950.  I haven't inquired about in-home auditions.

I've been listening to the Nenuphar with IsoAcoustics GAIA II for a few days now.. so far I can say that it's improved the center image and increased depth, really enjoy the Cube even more now.  Also noticed improved treble, I think that maybe because I'm no longer tilting the speakers up.  Note however that my listening room is a converted garage, the floor is already sloped down, which give a similar effect as tilting the speaker up.
These looks great and sounds great.. I've no plan of going back to the standard feet.

Some photos here:https://photos.app.goo.gl/NT6eiMgeea91o2Tt5

@stephendunn Glad you got in touch with Reinhard and got some up to date info. I can't recommend him highly enough as a businessman, electrical engineer, aesthetic designer and builder (though maybe not as webmaster! lol. I don't think the EHTs have ever had a presence on his site).  

I have to say I’m not a big fan of IsoAcoustics solutions using rubber or solutions using spikes for that matter either. I’ve had much better results using rollers and cups in combination with springs. It can make it complicated when trying to seismically isolate speakers. It’s far easier with components where one can use the rollers directly under components arranged in a equilateral triangle on plan around the centre of mass and they in turn sit on plates of slate with springs under the slate to take care of vertical isolation. You can use small inner tubes for the springs set at a low pressure to achieve a low resonant frequency or appropriate metal springs like the ones on ebay or Machina Dynamica.