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
Just to confirm that you can add a sub at a later date to either 8 or 10 inch Nenuphar’s if you so wish.
@ david_ten

I have experienced the same phenomime you have eluded to in your very informative posts. Four months ago, I never heard of a 2A3 or 45 DHT until an EE friend/designer mentioned that it is the most refined tube one can acquire and that started the ball rolling since he mentioned that 2 Watts would drive my 98 Db+ speakers...

Two months later, Triode Lab 2A3 Monos 4.5 Watts with Hashimoto Output Transformers arrives and the clarity and dimensionality is unmistakable especially if you have efficient speakers of 98 Db+.

None of the KT88 Amps or SET 805 with 300B as drivers I have owned has the refinement, separation, depth, sound staging, transparency or the flow of sound that those DHT provides, it’s just magical and I believe the sound quality is related to its simplistic design.

I also have many friend owning 2A3 Amps and have a collection of NOS Tubes and the verdict is the JJ 2A3-40 and that’s what I’m using with some Shuguang 2A3C as back-ups which are quite good as well.

Wig
The JJ 2A3 40 has a reputation as a very good sounding tube for reasonable cost. I be quite curious as how it compares to the EML 2A3 solid plate (SP) David currently uses. David if you ever decide to try the JJ I’d be interested in how it fared against your excellent (My opinion) EML in your high resolution system that seems to easily bare all sonic nuance/subtleties. This would informative.
Charles
That would be an interesting comparison and have heard some talk about the new Psvane Acme Series 2a3 that suppose to be better than everything...but they all sound different in the many typologies that are available.

Wig