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That's not correct

"The schematic showed -45V at the bias source AND -45V at the grid which must be wrong, after passing thru resistors. "

The grid draws no current. The two voltages should be the same. The factory simply had this amplifier set well below what would later become more typical for AB1. Many so-called AB1 amplifiers are in fact closer to Class A. This one really is AB1, where only a small percentage of total current flows without excitation. I would recommend caution before increasing the current with stock components, as the power supply and output transformers might not be up to the task.



Edits: 06/14/17 06/14/17
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