Wurlitzer 120/700 Power Transformer
Replacement power transformer for a Wurlitzer 120/700 piano
Replacement Power Transformer for Wurlitzer model 120 and 700 amplifiers.
Primary = 120VAC/60Hz
Per the Wurlitzer model 120 and 700 schematics, there is an inherent design issue with the bias of the 6V6 output tubes:
-The model 120 schematic shows combined cathode current to be .120A and plate dissipation as 16.67W per tube.
-The model 700 schematic shows combined cathode current to be .144A and plate dissipation as 21.75W per tube.
In both instances the plate dissipation exceeds the Maximum rated value for a 6V6. The amplifier should be re-biased to not exceed plate dissipation of 12W per tube.
This item may have a lead time of approximately 2-3 weeks.
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