|Dave H.||Re: Transformer Impedance|
"I was hoping that someone who has already made a 4 6V6 amp might be able to tell me if I'm trying something really stupid or if it makes sense."
It looks OK to me. My 4 6V6 amp has a 4k OT but Fender used 6k in the DR so 3k in a 4 6V6 amp should be fine. With 3k impedance and the voltage of your PT Iād make it fixed bias. The 275-0275 PT voltage rating will be at full load. If you measured it unloaded it could easily measure 290-0-290 especially if you mains voltage was a bit high.