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.

@paullb Mentioning the following in case it is of interest:

Since Srajan Ebaen’s ’review’ makes note of these differences between the two versions of the drivers as implemented in the Nenuphar speaker cabinet...

If I move my listening position back by ~ 6 feet; which results in my standard-position toe-in coming to a point ~ 2 feet in front of me:

the effect (using SB’s terms) is a downward shift in weight, increased "blackness" and a reduction in the "incisiveness in the presence region"...the penalty: is a decrease in sound stage width...

[NOTE: a small couch (my preferred listening position) is likely a contributor as it is now in front of me; this outcome may be simply specific to my room, etc. etc.]

David, things are moving rather slowly atm. I’ll send my drivers off in the New Year now and in the meanwhile I’ll try and get hold of some technical details.

Happy  Christmas to everyone.

If you have Roon you can adjust the DSP.  I found that -1dB at 4000Hz and +1.5dB at 100Hz (both 1 for Q) with the Sample Rate Conversion set at smooth linear phase sounds excellent to my ears in my room.  This will get me by until there are more ears on the V2.

I’m curious how other Nenuphar owners have their speakers set up? Distance apart, distance from walls, distance to mlp, toed in/not toed in, etc.? Also, are you sitting at ear height of the center of the driver? With the speaker titled back I think I am sitting slightly below the center of driver. When I lean up and my ear gets above middle it can sometimes make a shift in imaging. Anyone else experience this?

Do your speakers disappear in the listening space? I live the sound of the Nenuphar minis but i tend to get sound coming direct from the speakers. Not everything but often vocals seem to come from the left speaker. I’ve tried moving the speakers closer, further apart, forward, back, toed in, etc. I’ve also tried multiple amps, preamps, dacs, cables, etc. just to be clear the speakers sound great but I’m still trying to get that magic imaging where the speakers completely disappear. Maybe my room is too small for single drivers. Any tips?


@abd1   How are your current speakers setup? If you share their positioning, toe-in and your listening position measurements; as well as your room's dimensions and speaker placement within the room...other owners should be able to give you better (more effective) feedback.