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

@paullb,
Good question.
Stephendunn uses the Vinnie Rossi integrated amplifier which is  low output impedance and thus relatively high damping factor.  He has achieved outstanding results. 

david_ten uses the Found Music 2A3 SET which has a high output impedance and thus a low damping factor.  He gets outstanding results driving the Nenuphars. The designer of the Nenuphar is pretty adamant in regard to what type of amplifiers he had in mind during development. 

My takeaway is there are certainly additional factors involved that  ultimately determine the degree of sucess of an amplifier paired with this speaker. 
Charles 

charles1dad  
Just a reminder that I use 1 ohm resistors per VR's advice between L2i-SE and positive speaker cable to lower damping factor to 2 which seems to be right in the Nenuphar's sweet spot.  And how sweet it is.

Hi Stephen,
Yes I recall you are using a resistor (Further improvement). Prior to that weren’t you experiencing very good SQ results with the stock Vinnie Rossi amplifier/Nenuphars?
Charles

Charles,

Yes, your memory serves you well.  Straight up the VR L2i-SE was a step above every other pre+amp combo I'd tried with the Nenuphars. Adding the resistors improved the bass and added more presence and air.  As so often the case in this hobby, you can't imagine the improvement until you hear it.

Thanks for the kind works, @charles1dad - I’ve really tried to be honest and level with folks about what I hear without reviewer-speak. I’d love to report back on the Cubes, but would have to fly to Chicago or NY to demo. I’m a bit concerned about rock/electronica on them per Srajans comments, but have considered purchasing a pair with return policy. Recently, I very much enjoyed the efficient Fynes at a much higher price point.