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
dspringham  Glad making the blind leap to the Nenuphars worked out.  I think many on this thread had to do the same, as did I.

The best option for matching the Decware triode SETs using the VR L2iSE as DHT pre is not exactly clear to me.  Since I prefer the balanced output,  two apparent options are A) the SE84UFO25 with the 
SBIT balanced to single end converter or B) a pair of the SE84UFO2 with XLR inputs and the Anniversary upgrades.  I have an email into Steve to
see which might be preferable.  And yes re lead time I took a gander at his build list and it is over 400 orders long!
@dspringham  Congratulations!!!

Would love to see the finish you chose. Can you link to a photo?

Nenuphar in Smoked Eucalyptus (piano gloss finish)

I'm also curious about your component chain ahead of the Vinnie Rossi?  Thanks.
you gotta love speakers like this that bring out everything that this mighty 2 watts has to offer

Highlighting the important point Dave ( @dspringham ) makes.

This despite Nenuphar specs, which suggest otherwise.
@david_ten,

"This despite Nenuphar specs, which suggest otherwise" 

Good point but only if one relies exclusively on specs and numbers on printed paper and ignore the actual words uttered by Grzegorz  Rulka. He will with patience and conviction explain precisely why the Nenuphars preform brilliantly with low power tube amplifiers (Of suitable quality)  with zero NFB and high output impedance.  Just ask him😊.

The added bonus of the Nenuphar is it is capable of performing very well with amplifiers that do not fit those clearly stated parameters. Grzegorz has been very open about the design and targeted amplification for his speaker. I readily acknowledge that there are people driving the Nenuphars with solid state amplifiers quite successfully. 
Charles 
They work well with low-powered amps because they sound extremely lively and engaging at lower volume levels.  Unlike most contemporary speakers, you don't have to crank them up to get your toes tapping.  I am a fan of that kind of sound, whether from full-range/wide range drivers or from horn-based systems.