Anyway, to the chase. The SE transformers measured 1.24V out for 50V input. This is a turns ratio of 40.3 to one. This is squared for the impedance transformation. Assuming 8 ohm load, this is a 13k primary impedance, which seems rather high, unless the speaker load is really 4 ohms. Primary inductance was ~30H, which is respectable.

The P-P transformers measured 1.15V out for 50V in. This is a turns ratio of 43.5:1, or a primary impedance of 15k for an 8 ohm load - again, a 4 ohm load sounds more plausible. Primary inductance was 60H, again respectable.

Anyway, can anyone with experience parting these consoles out tell me wheter you have encountered 4 ohm speakers?