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:

Link to 6Moons review by Srajan Ebaen (August 2018):


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.

I noticed a comment on the previous page regarding Refined Audio, so I just checked.  They continue to import and represent Cube Audio.

In fact, in case someone is interested: a Nenuphar BASiS is listed at a healthy discount  😊  here >>>>

Refined Audio Cube Audio Speakers



I am surprised that the Jazzon speakers do not appear on their website.  

As part of the 're-entry' I perused my first audio classified listings email.

There is an Art Audio PX25 monoblock listing which would make for a wonderful pairing... if you are looking for a warmer sound. I do not know the listing party.

Here's the WBF Masters & Makers Interview of Mr. Rulka (by Ron Resnick).  Though primarily focused on his Qualio Audio brand, the discussion is general and provides insight into Grzegorz and Marek's thinking / approach / trade-offs. It briefly  touches on Cube Audio (in a few places).

WBF Interview of Greg Rulka