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

@david_ten The speakers are supposed to arrive early-mid December. At least to the distributor. So I'm hoping to have them mid-late December. I'm very excited. So far I'm using the amp with my 85db standmounts and it has zero issues driving them. It's a push pull 300b creating 26wpc/8ohm. It does help that I'm using a pair of REL T5i's for the bass, but this amp is far from wimpy. I was lucky that the unit I purchased came with some nice tubes already. Vocals are so lifelike with this amp. Midrange is gorgeous as well. Its pretty dead quiet and effortless. My wife said this combo I'm using sounds so good why do I need new speakers. It does sound really good, but can't wait for her to hear the Nenuphar Minis. I'm planning on starting out w/o the subs. I don't think I'll need them with the Minis, but I've been really impressed with these subs and I generally don't use subs with 2-channel.

Did anyone try LTA Z10 with the Cubes ? I hope it has enough to power the Nenuphars. The spec doesn't list much details but folks at LTA said they use low -ive feedback and low DF. 
Anyone have compared the Z10 to a SIT-3 ?

Why is a low damping factor (high output impedance) desirable for these speakers?  Is the frequency response  change from the high output impedance and the impedance curve of the speaker a favorable interaction?

As a fan of low output tube amps, many of which have typically high output impedance (low damping factor), I generally don't find low damping factor to be a big deal, but, I never thought of it as a positive attribute.  

@doni  Don, if you haven't done so, I suggest reaching out to Jon Ver Halen, the US importer for Cube Audio. He may be able to connect you with a client in your area should the client be willing, given the current situation.

Refined Audio contact link:

https://refinedaudio.com/pages/contact

Thanks David, will do.