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

Cube Audio (Poland) designs single drivers and single driver speakers. 

Principals are Grzegorz Rulka and Marek Kostrzyński.

Link to the Cube Audio Nenuphar (with F10 Neo driver) speaker page:

Link to 6Moons review by Srajan Ebaen (August 2018):


Parameters (from Cube Audio):

Power: 40 W

Efficiency: 92 dB

Frequency response: 30Hz - 18kHz ( 6db)*

Dimensions: 30 x 50 x 105 cm

Weight: 40 Kg

* Frequency response may vary and depends on room size and accompanying electronic equipment.
Wish it was easier to hear everything...

I read a number of pages of this thread (starting from the end), and was getting very jealous at all of his listening experiences:
Yes KeithR has quite the extensive listening, ownership and auditioning history. On WBF there’s a core of about 12 to 15 people who contribute roughly 75- 80% of the posts and content. However they collectively have vast experience and  are consistently interesting to read. Morricab, bonzo 75, spiritofmusic, etc.

They can differ significantly in opinion from one another but the courteous mutual respect and appreciation never wavers. I admire that about them. Trolling isn’t nearly as pervasive on WBF as this site. There was a time when Audiogon had quite similar decorum.
Horning are pretty good but like Cube more, personally. No cross over makes a huge difference, it’s just a very difficult art to get the drivers to work over a wide bandwidth. Cube cracked it.
Very interesting to hear the the Nenuphars have managed to do what most us are skeptical of, the full frequency range reproduction by one driver. It has to bee a special presentation to say the least. Over the years listening and owning many different speakers and drivers I’ve come to realize am silk dome tweeter guy. I can never stand longer periods of listening of other tweeter technology’s. The other day I was able to listen to the new dynaudio confidence 20 and the esotar 3. Frankly I didn’t like the setup at dealer. They had some tube monos based on kt88s and it just couldn’t make it with the bass. Dynaudio have optimized their new models to be a easier load but they still do require some power. I loved the midrange and highs but that was it. I couldn’t detect superiority on much else being away from my critical room. I also heard the new sonus Faber Olympics. They had a warmer and a bit forward sound out of my taste. I much preferred the balanced , neutral and still natural dynaudio. 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.
Ricardo,  Your room may be too small for the "10" Nenuphar BECAUSE of the Bass. My room is similar size as yours and I was told to get the Nenuphar Mini's which have the "8".