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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 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'

david_ten OP
5,480 posts
 
FYI - There are two Nenuphar active listings here on the 'Gon. Both in the Black finish. One New, the other a showroom demo.
cal3713's avatar
cal3713
1,421 posts
 
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.
rwpollock's avatar
rwpollock
89 posts
 
"Curious if I'll be able to pull off a high gloss black piano paint job."

Try Ferrari Red. :-)
http://www.thesupercars.org/wp-content/uploads/2011/04/2010-Ferrari-599-GTO-red.jpg
It would look good with the gold drivers.
https://logos-download.com/wp-content/uploads/2016/03/Ferrari_logotype_on_the_red_car.jpg

Robert
sakso136
17 posts
 
  • Hi fellas,
i cant interpret these specs to know how this integrated will be a good match to nenuphars.
knowing that low damping factor is prefered for the nenuphars....
any help decoding these specs and opinion on compatibilty with the cubes.

HD & N< 0.15 % @ 5W output, < 1 % @ 40W output < 5 % @ 52W outputInput Impedance>15 kohmsOutput Impedance<0.8 ohms (damping factor >10 reference to 8ohms load @ zero global feedback)
Thks
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