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"Blackfacing a Fender Showman Reverb"

Changing the BALANCE (hum) pot to BIAS pot.

Original resistor setup. Unbalanced 68K-ohm grid-to-ground resistor on 6L6GC's. 47k-ohm anode plate loading resistors on phase inverter. Two lines coming off balance pot.

AA270 bias and PI loading resistors photo AA270biasandPIloadingresistors_zps56b2e98a.jpg

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Balanced 220k-ohm grid-to-ground resistors. 82K-ohm and 100k-ohm anode tied resistors. One line off bias pot.


AB763 bias and PI loading resistors photo AB763biasandPIloadingresistors_zps56fa5912.jpg



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Topic - "Blackfacing a Fender Showman Reverb" - FenderLover 21:24:19 01/20/15 (10)

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