Abruce,
I have a lot of respect for Israel Blume and his superb products(just look at my system page). Your speaker is very similar to the T-5 model.This speaker is 85-86 sensitivity,4 ohm load that dips below 3 ohms and has a high phase angle in the midrange.
I don`t believe an 8 watt SET amp that lacks 'any' negative feedback is a good match. Your speaker would seem to require a high power SS amplifier that can drive lower load impedances and has some NFB in the circuit.
The Frankenstein is superb, but only if matched with the proper speaker.
Regards,