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

@cal3713   +1

Btw, I just wanted to say how exemplary this thread is. Just pure, helpful, experience sharing and education. It's really a pleasure, thanks.

@stephendunn  Congratulations on your success with the Vinnie Rossi integrated and resistor solution.

@debjit_g If you are still looking at amps, and a 2A3 is still an option...

My Found-Music 2A3 drives the Nenuphars with ease. I top out at 90dB averages when I choose to crank the music. We have had it up over 100dB averages for a couple of audio buddies who prefer their music really loud. Above 90dB levels, my untreated room asserts itself as an unwelcome actor.

[Note: by average, I mean the average over the recording (including peaks)]

My usual (and normal) listening levels are in the low 70dB range with averaged peaks in mid to high 80 (spikes into the 90s); recording dependant, of course.

Room is 19 ft by 26 ft.

I am hoping that the 2A3 can power the Cube’s to a comfortable listening level when the listening position is 8-9ft from the speaker.

Not all 2A3s are created equal. I encourage you to reach out to @charles1dad and others qualified to address build quality.

General comment for those not active in this thread: the designers of Cube Audio's Nenuphar (and variants) have routinely shown their work paired with low watt (45 and 2A3) SET amplifiers.

Peter Breuninger, of AVShowrooms, fell under the spell of the Nenuphar Minis driven by the Tektron 45/50 SET amp. Just another recent example of the exceptional synergy of the Nenuphar(s) with low watt amps.

Speaking of the resistor solution, Stephen, could you elucidate more? Were they across the terminals? Were they at the amp or the speaker? Are they in series or parallel?

TIA,
Robert