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: 

https://www.cubeaudio.eu/cube-audio-nenuphar

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

https://6moons.com/audioreview_articles/cubeaudio2/

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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.
david_ten
@david_ten,
David congratulations!!! True state of the art of effort from Found Music. I believe that they will sound spectacular driving your Nenuphars. I truly look forward to your  listening impressions. Scott is an immensely talented builder of Uber quality tube amplifiers.
Charles
what a lovely thread with great contributions by caring people. What audiogon could be…

Grace

the Thoress phono enhancer was on my radar, would appreciate impressions of that
@tomic601 
"what a lovely thread with great contributions by caring people. What audiogon could be…"


Yes, the OP @david_ten runs a tight ship😊.
Charles 
Congrats.. what are the specs for these beauties?
I'm going a completely different route.. put in an order for a McIntosh MC462.. hopefully they will pair well with the cube.  It's a 3 months wait now aday.. no fun at all.
From JA at Stereophile.

"McIntosh specifies the MC462 as being able to deliver 450Wpc (26.5dBW) into a load matched to the nominal output Autoformer tap. With clipping defined as being when the THD+noise reaches 1%, fig.6 indicates that the MC462 exceeded its specification even with both channels driven, its 8 ohm output clipping at 516Wpc into 8 ohms (27.1dBW). The trace in this graph stops at 1%, as that is when the amplifier’s protection was triggered. Into 4 ohms (fig.7), the McIntosh’s 8 ohm output clipped at 720Wpc (25.6dBW). It’s fair to note that I don’t hold the wall voltage constant for this test; with both channels clipping into 4 ohms, the wall voltage had dropped from 121 to 115.4V. The MC462’s 2 ohm output delivered 190Wpc (22.8dBW) with both channels driven into 8 ohms at 1% THD+N, 298Wpc with both channels driven into 4 ohms (21.7dBW, fig.8), and 536W (21.3dBW) with one channel driven into 2 ohms"

This type of amplifier (On paper) is truly the opposite of the kind of amplifier the Cube Audio designs of the Nenuphar had in mind to drive this speaker. Single driver crossoverless with intentionally easy impedance load and highly damped driven design.

It will be very interesting to see how this pairing works out. You just never know until you listen. Best of luck @kragon. 
Charles