I bought a pair of Harman Kardon citation II output transformers off e-bay,
and I'd like to design an amp using them, but I'm unsure of their impedance.
They have cloth covered wires. The SAMS booklet lists them as 3200k, other web
sites list them as 3,800k and 4k. Another question is how much current can be
run thru them. I am considering using kt88/6550 pair as output tubes, or maybe
two el34 in parallel. Last question- I've searched the net for tutorials in
using loadline graphs, but haven't found any with ultralinear examples. Are
there any differences that I should be aware of when drawing the load lines
in ultralinear vs. pentode or triode modes?
Thanks,
Don