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

@charles1dad yes, I had corresponded with David a while back and I vaguely remember he mentioned his room is large and open at the back (instead of front in my case). I am not sure if its still the case though. It would be interesting to get David's opinion.

I think he also mentioned that he has pulled out the speaker into the room quiet a bit. I do the same as I am accustomed to pulling out speakers way into the room with my Acoustic Zen Crescendo MkII and find the Nenuphars has the best balance. On the contrary Jon suggests 12-18" from the front wall but it just doesn’t work for me as the sound becomes way too aggressive. So horses for courses, I guess :-)

Yep, horses for courses indeed.  In the 6 Moons Nenuphar review I believe that Srajan Ebaen put the speakers further from the front wall for improved sound quality. 
Charles 

debjit_g

I have a similar room to yours but mine is 15' x 20' with an 9ft ceiling, speakers 8ft apart,  that opens to a kitchen on the left, and sit 8.5 ft from the Nenuphars.  I have the FW SIT-1 and the Ayon Audio Odin III amps.  I had better bass moving the speakers closer to the back wall with 5 degree toe-in.  I recently added the Stillpoints Aperatures to the side walls which made the greatest impact in the bass when using the FW SIT-1 (I haven't swapped in the Ayon for a while).  The lower damping factor and dual mono amps on the SIT-1 as compared to the SIT-3 might also have an impact.  

The Cube Audio speakers really intrigue me.
That said, I find it interesting that in almost every youtube video demo of the speakers,  it seems like the lowther character comes through, a sort of thinness with a peaky upper frequency highlighting vocal sibilance.

I've spent my recent free time on motorcycle research, demos, etc. Time to catch up on the thread!

@ricardoosusa   PM me if you would like to connect over the phone. There are a lot of questions in your post and it will be much more efficient to cover them over a phone. 

So the Nenuphars seems to me like a great option to an all tube system. Being someone who doesn’t like complex systems and much prefer simplicity and short path to signal, no subwoofer its a must for me. The questions I have would be, how good are the high frequency? Describe if possible. How good is bass on a medium room say 14 x 18 ? Is it deep and able to energize it ? At what volumes? Do they play fast and accurately when demanded? Do they present a neutral and balanced sound or lean towards other spectrums? I appreciate if owners report in with valuable insight of these marvels of modern sound reproduction.