Speakers for First Watt SIT-1 amp

No one to my knowledge is suggesting the "shelling out of big bucks".
The review is recommended simply as a source of further information. Home audition is certainly desirable if it can be arranged.
I’ve found Srajan Ebaen’s reviews to be particularly candid, detailed and accurate over the years as I’ve heard a number of components reviewed by him. YMMV. I do make the assumption that ggking7  is a mature and intelligence adult who recognizes this is subjective and he will perform his due diligence if he decides to pursue further.
Charles

Hi David
Thanks for the correction regarding the Cube Audio Magus and the Cube Audio  Bliss C models and 6 Moons review/Blue Moon award. I should’ve looked it up to be sure rather than relying on memory.
Charles

Ggking7, 
You mentioned the Cube Magus (8 inch driver) this speaker received the coveted Blue Moon award last year. So you know how impressed he was with its performance. It appears that the Nenuphar with the newly developed 10 inch driver and very powerful motor/magnet unit (and special cabinet) is clearly superior (to his ears) and explains the justifiably higher cost. This seems to be a very  upper echelon speaker.
Charles 

Hello ggking7,
If you really decipher Srajan's glowing praise it would suggest that he's quite possibly more unimpressed by the Nenuphar than the voxativ models he is very familiar with. Send him an email for his thoughts  on this. He's actually pretty responsive to inquiries from readers of his site. .  In your case  particularly as he owns your amplifier (for several years) and holds it in the highest regard. He seems genuinely moved by the sound quality of the Cube Nenuphar and this would explain the very rare award he bestowed on it. 
Charles 

Hello ggking,
You have created a very interesting thread and I will add that you have what is considered a unique and well regarded amplifier. You have received some very thoughtful posts from Audiogon members who are quite respected on this forum.

For all the positive attributes of a single driver speaker they have a few acknowledged shortcomings (as do any speaker niche). Playing complex or "busy" music and particularly at higher volumes is one of them. David_ten mentioned the Cube Nenuphar a new speaker from Poland. It was given a stellar review by Srajan Ebaen of 6 Moons. com. I find this very relevant given his extensive experience with single driver speakers (including the expensive Voxativ from Germany).The Nenuphar seems to have reached a new level of performance in this genre.

Another option is the Coherent Audio speaker (Toronto Canada). This is a 2 way design with a very simple crossover, 95db with an 8 ohm impedance load that is reportedly very flat. Based on owner word of mouth and professional reviewer show reports it sounds fabulous driven with low power amplifiers. I suspect it could be terrific with your S.I.T.-1 mono blocks.

BTW in the 6 Moons review Ebaen found the Cube Nenuphar to sound superb paired with the S.I,T.-1 and S.I,T.-3 amplifiers. He gave a slight preference to the S.I.T.-1.
Good luck ,
Charles