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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
charles1dad's avatar
charles1dad
10,250 posts
 

Hi Steve,

I am also not surprised that the S.I.T.-1 is even better with the Nenuphar than the excellent S.I.T.-3. It is a closer match to the type of amplifier the Nenuphar was designed for. More in line with (as you identify) a high quality zero NFB high output impedance tube SET. Yet one can still achieve stellar results with other types of amplifiers. I did also feel/sense that Srajan tempered the differences between the two First Watt amps when I read the initial Nenuphar review. Steve if sounds as if you have stepped deep into the realm of music lover’s heaven with the addition of the S.I.T.-1 mono blocks. I suspect you are hearing (certainly very similar) what David is hearing with his system..

Charles


stephendunn's avatar
stephendunn
151 posts
 
Hi Charles,

It feels more like I've fallen rather than stepped--not really knowing what I was getting into.  As you know, when you replace a critical piece of gear, like a loudspeaker, one thing leads to optimizing another and before you know it, you've replaced almost everything in your system!  I'm not there yet, but I have auditioned some cables (I was using vintage wire), so probably my next update, if I can keep myself from crowing more about the SIT-1's, will be that.  The Nenuphars make quick work of comparing cables.

Thanks for following along on this much needed, alternate world trek.  
cal3713's avatar
cal3713
1,421 posts
 
Congrats Stephen.  That's great to hear.  And I know it's not a diy-heavy crowd, but if people find a SIT-2 and want to convert it into a SIT-1, I believe there are only two core differences... separate power supplies for the monos, and the adjustable aspect of the 2nd harmonic on the SIT-1s.  In the end, a SIT2 with one channel broken out into its own chassis and with its own power supply will probably get you most of the way there.  Anyone who's built a DIY first watt amp could easily make the conversion.  I've found a huge impact of adding a separate power supply for each channel.  I'll never go back to a stereo amp again.

Please keep us updated on the journey Stephen.
charles1dad's avatar
charles1dad
10,250 posts
 

Steve,

It has been fun following your  listening impressions and reporting as your system has evolved. After all isn't this the entire point ?  Discovering  ways to improve our music listening experiences. and engagement. It really makes me  happy  when someone  gets ever closer in connecting with their music be it streaming or a collection of recordings.

Charles

david_ten OP
5,480 posts
 
...the SIT-1 poked through the clouds to a performance peak I have not experienced with the Nenuphars--or any other speaker for that matter.

Stephen, first let me say how much I love your writing style and reading your prose. It flows so easily and expresses so much. 

Second, congratulations on acquiring the First Watt SIT-1 monos and their contribution to your system and the resulting peak connection to it via the Nenuphars.
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