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.
Thanks @david_ten and @cal3713

@cal3713 what gauge and connector will you be using ? single or double run ? have you considered replacing the internal wire from the speaker terminal to the Neo 10 driver with the Tempo electric wire ?

I’ve used various silver IC and speaker cable over the past 20 years. I’m currently using Ocellia silver cables the past 7 or 8 years. As with you I just haven’t heard the thin,bright or edgy sound supposedly attributable to silver. In fact the Ocellia is very refined, smooth, and organic yet quite open and nuanced. Exceptionally transparent/clear. Warmth rather than cool and sterile/clinical.

Interesting the improvement in your Coincident speakers as I know they use high quality 6N copper wire. Israel Blume (Coincident founder/owner) once told me he doesn’t care for silver. I respect his opinion but I’ve never had a problem with silver wiring.

IMO silver actually has a natural warmth (But not gratuitous).I’ve always been curious as to how my Coincident Frankenstein 300b and their Statement Line Stage would sound with silver internal wiring. But I’m very happy with both and left well enough alone.
Anyone compare the Cubes to Zu? Seems Druid VI. Nenuphar would be super interesting.
@debjit_g After four years of work getting my Coincidents to finally sound like a reference, I'm not feeling a big rush to try new speakers, but I still like the idea of putting the neo driver in a 1cuft sealed cube for a diy project and change of pace. I'm very attracted to the idea of eliminating the crossover. If I do take the plunge, I will most certainly use the tempo Electric wire inside the cabinet. Would probably go with 14ga as that's what I currently use on my mid-range driver (20ga to my tweeter & 12ga in the bass cabs).


And @charles1dad I wonder if Israel's stated preference stems from the fact that he sells his own copper wiring. Replacing the stranded copper (with a Teflon jacket) in my PREs with solid core silver reduced distortion, and increased texture, color, and naturalness. As you stated, the silver sounds smooth with a subtle warmth. I don't hear any tradeoffs at all. The only downside is increased cost.  I'm confident anyone with these speakers who did an a/b would prefer it.

And I don't blame you for leaving well enough alone inside the Coincident electronics. I've been using VH Audio's silver (5N, solid core) inside my electronics, but also still have a lot of copper in the various circuit boards. Routing new signal wire throughout all the pTp wiring would certainly be a laborious project. And as you state, they already sound so good...


Also, for anyone considering the option, Tempo Electric's 14ga is only ~$60/meter (x4 if you're buying a stereo set) with a 30-day free trial. It's a bargain.
@keithr Hopefully someone who's actually done the comparison will step in, but I suspect these two designs will sound very different. You can likely catch some of that if the read the two corresponding 6moons reviews and compare some if the descriptors used across across them...

See paragraph 3 here -
And whole page, but especially final paragraph here -