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

On the downside, the bamboo ply is pretty expensive... I might pay around $1k in materials for this in total. I’m good with it, though -- I want to shoot for something really top notch on this job, both in form and function. Economically I’d still be coming in at around half the cost of a new set of Nenuphars

If I may humbly interject , Go for it with the Bamboo cabinets. Make this project special and beautiful. You are going to be utilizing a world class single driver that will sound fantastic with proper execution.

You certainly have the prerequisite skill set and experience to pull this off. Many do not. Take advantage of your know how and talent. Please keep us posted.

Charles

Please keep us posted

Will do!  Thanks for the kind words, and all your input throughout the thread.

My progress with this will be slow -- I'm just starting the preliminary work (planning, research).  I'm in a good situation for taking my time on this one, as I'm already quite smitten with my Omegas.  Eventually, I should have a well informed comparison between the two.

I recently got a good deal on a used amplifier by Gold Note, the PA-10 ($2K new). It is their introductory power amp and, like the PA-1175, has a switch to change the damping factor to either 250 or 25. Of course I immediately set it to 25 and hooked it up to my Nenuphars.

 

I'm in the tube camp these days, but I'm going to keep the Gold Note as a backup in case my David Berning amp has to go to the shop. I'd rank the PA-10 below the SIT amps but slightly better with the Nens than the Bakoon. It has the usual virtues of solid state -- the bottom end, the detail. Vocals have good presence but lack the palpability of tubes and the floating decays, such as near the end of Scarborough Fair where Garfunkel's "parsley, sage, rosemary and thyme" floats off into the empyrean.

I’ve seen this amp and was also intrigued by the switchable damping factor. How did it sound with the DF set at 250?

Anyone try any of the Luxman Class A integrateds with Nenuphars? I am curious to try the L590axII integrated and just simplify to that and a dac/streamer.

How did it sound with the higher damping factor. Better than expected -- a little drier perhaps and a shallower soundstage.

By the way, word is that Nelson has found a new source of industrial SITs. Apparently they are larger and produce more heat. There is a SIT-4 in the works, but it may be a monoblock configuration to dissipate the heat.