[rfeenstra]

I do not have the factory schematic for this amp, just a similar one.  Perhaps captainclock1988 has a complete schematic for the Newcomb E-75.  My amp has an inductor under the chassis that is part of the HV filtering for the pre amp/driver section of the amp.  The only schematic I have is one I hand drew.  I have no specs on the choke.  Here is a photo of my hand drawn schematic.  The choke is found on the lower edge near the 5Z4's.