So... Is it sounding good or bad?
I like it very much. I am listening a lot of music from era tube amplifiers and radios were dominating
the market. That was reason I also build single element loudspeakers as my target was develop
system doing correct sound level of that period.
EL34-B distortion can be heard but as it is "tube type" it is ok. High frequencies like symbals are
"smooth" compared to solid state. Probably not the best setup for example for classic music where
is used lot of that kind of instruments (hard to separate them) but just a band and vocalist sets sounds great.
When I added LCR part of that test was use thin wire coils. A "good" 0.8mH coil will have resistance
less than 0.5 ohms. I used cheap chinese coils with 2 ohm resistance. Result is that I also got
a bass equalization because at the bass resonance the element has high peak impedance.
I would say it is "very good" now.