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

Showing 7 responses by wig

@ 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
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
@ david_ten

Thanks for the 2A3 comparison and I will be on the look out for a pair on the used market, hopefully something will show up... : )

Wig
@ david_ten

Is there a big difference between the EML Mesh and Solid-Plates? Maybe the type of music one listen to is the driving factor on tube type...

Thanks,
Wig
@ david_ten

Congratulations on your new Nenuphars!

I recently bought a small pair of full range drivers to hear for myself their attributes and I'm quite impressed with the sound quality and now see the beauty of eliminating crossovers/multi-drivers.

Wig
@ david_ten

I retrofitted a pair of 4 Inch Audio Nirvana Classic Full range drivers into my Energy Connoisseur C1 Cabinets which specs out around 53Hz-23Khz; 5 Inch Driver/1 Inch Dome tweeter. Not hearing any perceived roll-off in relation to the previous dome tweeter but the AN is just more vibrant and expressive.

No comparison! Right out of the box you will notice more transparency, clarity and a purity that is just phenomenal and talk about a disappearing act...I can hear unbelievable detail 50+ feet away on the other side of the house. The stock drivers were muddy and congested in comparison.

If this is what you get in eliminating crossovers/multi-drivers, I now see a change for me in the full range driver route. These are suppose to get even better with more hours and age.

Wig