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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
charles1dad's avatar
charles1dad
10,250 posts
 

David,

The T+A’s reasonable DF level and its negligible NFB no doubt contribute to its perception/reputation of being a very organic sounding  transistor amplifier compared to many other solid state brands. Also explains why it pairs so well with your Nenuphars. I guess it comes down to what someone desires as some amplifiers are touted for their DF greater than 1000!!! This is viewed as a + attribute.

Charles

khragon
34 posts
 
Just as luck would have it.. there was a SIT-2 on sale, so I snatched it up. Now I can compare between 4 ohm output impedance with 0.5 damping factor and >100 damping factor.
charles1dad's avatar
charles1dad
10,250 posts
 
khragon,
 Nice ! It will be quite interesting to read how these very different amplifiers  sound paired with your Nenuphars. I believe this will be a very enjoyable endeavor.
Charles
stephendunn's avatar
stephendunn
151 posts
 
khragon

Wise choice!
I am thrilled with the synergy the SIT-3 has with the Nenuphars and the SIT-2 should be even better from what Srajan heard with the SIT-1.
I think you'll be shocked at the difference between the SIT-2 and your other amps.
You're in for a treat.
charles1dad's avatar
charles1dad
10,250 posts
 
I believe that it’s certainly possible the Schitt and PS Audio BHK amplifiers could provide good sound driving the Nenuphar. I would be ’very surprised’ if they approach the same level of sound quality as the S.I.T.2 driving these speakers. This is precisely the type of amplifier profile Cube Audio designed the Nenuphar to work with. I eagerly look forward to khragon’s amplifier comparison comments post listening sessions. The high DF and low output impedance is exactly what the Nenuphar driver doesn't require or need.  This should be an  exceptionally insightful exercise. 
Charles 
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