So I think most of Robs single ended micro designs with the EF80 call for a the Hammond 125ASE using the 10 kΩ Primary or something similar. I've got a handful of the Hammond 1750A 25k/8Ω reverb transformer. How awful would it be if I used a 4Ω speaker to reflect a 12.5 kΩ primary. Doable? Would love to complete one of these for $80-90+/-. I'm not quite up to snuff enough for drawing/reading load lines.