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
I just ran into the damping factor thread and see the above comment was completely unnecessary. Sorry Robert.

Hi cal,

However you made a valid point. Negative feedback (NFB) level manipulation does affect these amplifier parameters.

1 Gain output decreases as NFB is increased..

2 Output impedance decreases as NFB increases.

3 Damping Factor increases as NFB increases.

Output impedance and Damping Factor have an inverse relationship.

Charles'

FYI - There are two Nenuphar active listings here on the 'Gon. Both in the Black finish. One New, the other a showroom demo.
Thanks for the heads up David.  The 1 cubic foot sealed box DIY version will be my next audio journey and it's good to see the thread staying alive. Really looking forward to the building experience. Curious if I'll be able to pull off a high gloss black piano paint job.