Goldenear Triton One.R - can it be driven with low power tube amp?

cakids OP
Measurements indicate that the impedance between the critical 80 to 200 hz range is between 4.1 and 5 ohms.

Cakids, you need to understand measurements a little more, Keith Howard’s are the EPDR measurements (combined impedance and - phase angle) That the amp will see.

Goldenear Triton One.R:  Review LAB Tests: by KEITH HOWARD
We measured a minimum modulus of 2.9ohm and a minimum EPDR of 1.3ohm at 92Hz, with further dips to 1.6ohm at 219Hz and 2.0ohm at 584Hz.
So the One.R is a tough loudspeaker to drive, despite its powered bass section.

This is what the amp sees, not just the impedance, common stop going round in circles.

Cheers George

Georgehifi,
You are correct. I have limited technical understanding of EPDR. I understand that a loudspeaker is not a resistive load. It is reactive and the reactance varies with frequency, as the phase angle varies with frequency. And the phase angle is the sine wave angular offset between the voltage and the current waveforms at the given frequency. I have no idea how to calculate EPDR, however.
Nevertheless, using the data from KH, can I assume that the amplifier current draw at 92 Hz will be approximately equivalent to the current draw, for the same signal (voltage) level, into a purely resistive load of 1.30 ohms?Just trying to understand these measurements a little better. I think I have already determined how to select an amplifier for these particular loudspeakers.

Charles, George, and other contributors,
Thanks for your inputs. They were informative and useful.

cakids, 
In your case George is putting the cart before the horse. You've done the ultimate test by using your Manley Stinray and finding "excellent " sound driving your Tritons. George hasn't done this and yet proclaims low powered tube amplifiers such as yours won't work well. So it is your own ears versus what he says the measurements will predict. Which of the two is more logical and reliable?

Do you now doubt what you've heard in your system? Educating yourself with regard to  measurement interpretation is fine and useful to a degree. The opportunity to listen is even better. Does your listening experience correlate with his warnings? It doesn't appear that way to me.
Charles 

I do not have a SET amp to try but I do have the SS Vista Audio Spark, 20w @8ohms. With the right speakers (Fostex for me) this can be a beautiful sounding amp. 
So I hooked it up to try out on my One.R’s in light of this low wattage discussion. Sounded nice up to about 65dB, 8ft away. After that the clipping was terrible and, obviously, the poor little fella got quite warm quickly. 
The impedance dips clearly too much for the little Spark to handle. 
That was a bit of fun but the Hegel H390 is my preference of 3 SS amps I have tried. Effortless sound at any level. 

Hi mocean, 
You did the right thing by trying your 20 watt solid state amplifier driving the Tritons and the outcome wasn’t satisfactory. One can rightly conclude that the Vista Audio Spark amplifier wasn’t a good match. However cakids had a Much better outcome. One could conclude that the Manley Stingray is much better suited for this speaker than the Vista. Both scenarios confirm the importance of listening.
Charles