Pioneer SM 500
I have early 70's SM 500 Tube Integrated Amp.
Most of the oil caps are toast, but otherwise in decent shape.
Really interested in using Transformers for a scratch build.
PT has 3 amp and 1.5 amp heaters, a bias supply and other secondaries for HT.
Output tranny primary impedance? Uses 7189 tubes(similar to EL84)
Any wire/pin out diagrams helpful. Wondering if these OT's will drive EL 34's....
Anyone know? Thanx