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
@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?
"Does anyone know how they differ"?
Differences between the model generations were covered in Dudley's review. 
Charles