i love this dual rect circuit, never seen it before,
takes all the stress off the plates as far as having peak AC volts opposite each other,
and doubles current capacity, using the 750 ma 5AW4's will mean a pretty stiff supply from the vac rects.
series heaters means 10 VAC instead of 5,
so it is a Knight pwr supply and a Dynaco amp circuit,
tried it out at practice, very quiet, sounds nice! we don't play loud so it has plenty of volume,
passive speaks means, no ground loops or extra cords floating around on stage,
