This is the right side of the chassis showing some of the transformers, and all the tubes including the 5 series pass 6W6s.
The Voltage adjust rheostat, left, and variac on the right. These are shaft coupled and keep the "head room" constant minimizing plate dissipation of the series regulators.
"Bottom side of the chassis and the remaining transformers, inductors, and Oil filled caps.
Cabling on the bottom, to and from all the transformers and inductors.