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
While I'm at it, I'm also going to post the results of the amplifier shoot out between the LTA Ultralinear and the PL SIT-3.  Yes, I know, the Nenuphars are probably not fully broken in, but at around 75 hours I think the changes from here will be subtle and not alter the difference I hear between these two wonderful amplifiers.

Both these amps display terrific synergy with the Nenuphars.  The difference being a matter of taste.  To borrow from Srajan when he compared the Bakoon to the SIT-3 on page 6 of his Cube Audio Mini Basis review, the LTA was "a Nordic summer day" and the SIT-3 a "Tuscan afternoon, early fall."  Which translates to many things having to do with detail, mid range, base and tempo.  The LTA rendering detail more prominently, with a leaner mid range, a slightly more refined base and PRAT that was quicker, more forward.   It made me sit up and take wonder.  With the SIT-3 detail was more in balance, the mid range richer, the base deeper and rounder, and PRAT, well this is where it gets tricky, because there was something that made the SIT-3 more engaging, that pulled me into the music more, sometimes to a very emotional degree.  My suspicion is it had something to do with PRAT, although none of those ingredients really called attention to themselves. Maybe it was greater second harmonic distortion?  Bottom line: it would be nice to keep both amps to enjoy Nordic summer days and early fall Tuscan days as the mood struck me.  But that seems a little excessive. I'm very happy here in Italy where "The light is softer.  Edges are gentler. The breeze is warmer.  Lunches are far longer."
Has anyone here heard the Cube Audio speakers with the active subwoofers?  I am wondering what is gained and what is lost by that approach.  I am not a bass freak myself, and I was not particularly concerned with the bass I heard from the Nenuphar.  But, from my experience with other full range drivers, adding other drivers changes the sound in so many different ways.

The active subwoofer would also substantially reduce the power requirements for powering the full-range driver.  That would bring into play many of the ultra low-powered tube amps I like.
Good question larryi, but unfortunately I haven’t been able to audition the versions with active subwoofers, that was one of the reasons for going to Munich but unfortunately that event has been cancelled. I have to say I don’t feel that I’m missing out on bass, with either the 8 inch or 10 inch Nenuphar’s.
Steven, the LTA and SIT 3 sound like excellent choices. I’m hoping I might be able to try both at some point to compare with the Bakoon 13R. For me the fact that the Bakoon will have a matching dac enabling JET SATRI through BNC is important to me. Apart from the sound the minimal concept of their designs very much appeals.
@david_ten 
In the photo I did have them with very little toe in, was trying them out.  Now I had them more toe in.. still playing around with placement.