Cube Audio Nenuphar Single Driver Speaker (10 inch) TQWT Enclosure

@dlcockrum

amplifier choice is very critical to achieving balanced tonality with the Cube full-range drivers, so choose an amplifier with higher output impedance (think ~ 0.8 ohms optimally) and thus a low damping factor (think 10 or so optimally). The Enleum 23R is said by many to work very well.

Absolutely right. Cube Audio very explicitly has made this point concerning low output impedance amplifiers ( High damping factor). Too much DF with their driver will be excessively damped, not good. I’d heed the guidance of the actual developers of this excellent speaker.

Charles

Great too see David Ten back on the thread!   Cheers.  

Great too see David Ten back on the thread!   Cheers

Agreed. 👍

Charles

What is too much damping?  The Cube Audio folks used solid state amps at a show I attended.  I assumed that they have a higher damping factor than most tube amps. If they do best with low damping factor, wouldn't they shine best with tube gear? 

@larryi Cube Audio primarily pairs their speakers with Tekron 2a3 SET tube amps for shows and demos. Sometimes the US Distributor uses First Watt SIT amplifiers at shows. Very unique solid state amplifiers designed by Nelson Pass that behave electrically and sonically like SET tube amps. The SIT-1 and SIT-2 have an output impedance of 4 ohms and a damping factor of 2 while the SIT-3 has a less ideal .25 ohm/30 DF rating. This review explains in all thoroughly: https://www.6moons.com/audioreviews2/cubeaudio2/6.html