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
  • 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
Hello,
Looking at the level of the stated distortion and accompanying output impedance and damping factor of >10 (Does this mean But <20?) is consistent with a zero NFB (Or very low level of NFB). So based on these measurements they suggest that (on paper) this amplifier should be a pretty decent match with the Nenuphar. Only an educated guess as other aspects of the amplifier aren’t known. Speaker impedance =8 ohm ÷ output impedance of roughly 0.8=10 which is the DF (At least for 8 ohms).
Charles
<<help decoding these specs and opinion on compatibility with the cubes...
Output Impedance <0.8 ohm
Damping factor >10>>

Yup, DF = 8 ohm/0.8 ohm = 10

Here are some other amps for comparison:

Mola Mola (Class D) = 0.003 ohm, so DF = 2666  <== avoid
Bryston 4B (Class AB) = 0.016 ohm, DF = 500  <== avoid
Aesthetic Atlas (zero feedback hybrid) = 0.25 ohm, DF = 32
FirstWatt SIT-3 = 0.26 ohm, DF = 31
FirstWatt SIT-1 = 0.27 ohm, DF = 30
LTA Z10 (ZOTL) = 1.2 ohms, DF = 6.7
Audio Nirvana 300B SET = 2.7 ohm, DF = 3

Thks guys. 
I was sure these specs will fit well the cubes.
to be continued.......,,
Hi everyone,
I had planned on purchasing the Cube Nenuphar 10 this fall for my 14 x 18 room but my system is now being relocated to a 11 × 12 room.  Is this room to small the the Nenuphar 10's?  Should I being looking at the Nenuphar 8's instead?