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
As I mentioned upthread, my class D SPEC amp is now driving my Boenicke W8 speakers. It was now time to explore tube amplification (fronted by Vinnie Rossie DHT using Takatsuki 300B tubes).

Where to start? As I looked at listing on Audigon and Audio Mart my thought was to go with something that had solid resale value. Also an amp in the (for me) mid price range. I didn't want to do the upgrade two-step too many times.

Well, brothers, I'm here to tell you I've seen the light. A bright green pleasure machine. Yes, Shindo has captured my heart. The little Cortese F2A -- 10 watts and 15 pounds. Texture and liquidity. Plenty of bass. And, as one writer put it, it just sounds as if the band was better rehearsed.

Will I sell my SIT-2? Not now, but maybe down the line....

- Robert
@rwpollock,
Class D SPEC amplifier driving Boenicke W-8 and Shindo Cortese driving the Nenuphars. Which is your primary system? Surely they possess rather different sonic presentations. I’ve always come across comments of high praise for the F2a output tubed Shindo Cortese. The late Art Dudley loved this amplifier. 
Charles
My understanding is SPEC doesn’t sound like typical class D. Robert, what SPEC amp do you have and have you tried it with the Nenuphar’s? 
FWIW, Art Dudley's review is about the newer Cortese. The one I have is an older model designed by Shindo pere, Ken. There is a review and picture here at Dagogo:
www.dagogo.com/shindo-cortese-f2a-tube-amplifier-review/
Does anyone know how they differ?