Then there were 2

arc uses printed circuit boards

it is neither a positive nor a negative

+1

ARC is point to point vs Rogue circuit board?

Huh? That's news- I've never heard of a hand-wired ARC product. All that I've ever seen have employed circuit boards.

@jimbones Well then its 8 ohms, but the efficiency in all cases remains the same. I think you're better off with the dual woofers, because you have more surface area for making bass and less excursion. Putting them in series works great for tubes.

There are 2 woofer in each cabinet. The woofers themselves are 90db. but with 2 in parallel it is higher but I dont have exact measurements of efficiency. speakers are 4 ohm.

@jimbones Tube amps do not double power as impedance is cut in half. That is why efficiency is a more useful spec than sensitivity when tube amps are involved. In this case, while sensitivity does increase, the efficiency remains the same. Since the total wattage of most any tube amp is lower into 4 ohms, I think you will find that you simply need more power.

I would also consider putting the woofers in series rather than parallel. They will act the same in the enclosure although you'll have to change your crossover a bit. But a tube amp will thank you as it will make more power, have wider bandwidth (particularly in the bass) and make less distortion.

my own 2 way speakers two MW16P and TW29R Satori drivers.

Is that between 2 cabinets or just in 1?

Do you have any idea of the efficiency and impedance of the speakers?
In a room that size 100-130 watts will work if the speakers are 92dB although you'll be able to run the amps out of gas if you really push it. If the speakers are 4 Ohms you might need more power.

@jimbones What loudspeakers are you planning to use and how big is your room?