There are several Muffin Factory component values that require changing for the Muffin Factory (MF) to better sound like one of the stock Big Muff Pi pedals.
I took screenshots of the different sections of the circuit and I show in red the MF component values. The first value is with the DIP switch open and the second value is the computed value of the two components in parallel, with the DIP closed. In this format: xxx / yyy.
Then in blue I show the new suggested component values. These new values were selected based on the most commonly used stock values by Electro-Harmonix.
The new values for the tone stack will give you the stock scoop, flat, a bump and a couple of other maybe useless curves.
The stock scooped tone is with the four DIP switches open.
Flat is with DIP 4.2 closed.
Bump is with DIP 4.2 and 4.4 closed
NOTE: In two places I suggest to relocate resistors across toggle switches because these resistors are for biasing the germanium transistors only. Solder the resistor leads to the solder pads of the switches. Relocating them free's up the DIP's allowing for correct component value choices.
I used this Big Muff Pi component table to determine the new suggested values.
The Muffin Factory and schematic is here: https://docs.pedalpcb.com/project/PedalPCB-MuffinFactory.pdf
A tone stack calculator: https://www.guitarscience.net/tsc/b...39k&RM=100k&RL=1M&C1=39n&C2=10n&RM_pot=Linear
A resistor in parallel calculator: https://www.digikey.com/en/resource...rsion-calculator-parallel-and-series-resistor
PLEASE inform me of any errors. @Feral Feline
I took screenshots of the different sections of the circuit and I show in red the MF component values. The first value is with the DIP switch open and the second value is the computed value of the two components in parallel, with the DIP closed. In this format: xxx / yyy.
Then in blue I show the new suggested component values. These new values were selected based on the most commonly used stock values by Electro-Harmonix.
The new values for the tone stack will give you the stock scoop, flat, a bump and a couple of other maybe useless curves.
The stock scooped tone is with the four DIP switches open.
Flat is with DIP 4.2 closed.
Bump is with DIP 4.2 and 4.4 closed
NOTE: In two places I suggest to relocate resistors across toggle switches because these resistors are for biasing the germanium transistors only. Solder the resistor leads to the solder pads of the switches. Relocating them free's up the DIP's allowing for correct component value choices.
I used this Big Muff Pi component table to determine the new suggested values.
The Muffin Factory and schematic is here: https://docs.pedalpcb.com/project/PedalPCB-MuffinFactory.pdf
A tone stack calculator: https://www.guitarscience.net/tsc/b...39k&RM=100k&RL=1M&C1=39n&C2=10n&RM_pot=Linear
A resistor in parallel calculator: https://www.digikey.com/en/resource...rsion-calculator-parallel-and-series-resistor
PLEASE inform me of any errors. @Feral Feline
Attachments
Last edited:
