FuzzDog Big Muff Pi Manual Download Page 8

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Don’t want a volume trimmer?

You can build a normal BMP recovery stage which is designed to approximately

compensate for the signal level loss caused by the tone section. This eliminates

the need for the volume trimmer.

To do this on either of the versions with recovery section previously detailed,

replace the parts below and add a jumper as shown.

External mids control?

Just wire a pot up to the MID pads if you want mids control outside the box.

470K

100K

12K

2K7

Summary of Contents for Big Muff Pi

Page 1: ...Stack Add some tonal delight to your favourite circuits Contents of this document are 2018 Pedal Parts Ltd No reproduction permitted without the express written permission of Pedal Parts Ltd All right...

Page 2: ...UPPLY Unless otherwise stated in this document this circuit is designed to be powered with 9V DC COMPONENT SPECS Unless otherwise stated in this document Resistors should be 0 25W You can use those wi...

Page 3: ...t few pages In each case Q1 can be replaced with your preferred BJT such as 2N3904 C3 can be replaced with whichever value suits your circuit The PCB is quite tight and oops we didn t allow for the li...

Page 4: ...mids This will drastically reduce your signal level so only use in circuits where you will recover some gain afterwards Add jumpers as shown below R1 39K R2 22K R3 Empty R4 Empty R5 Empty R6 Empty C1...

Page 5: ...The values below are for the LPB boost circuit which gives more output than the standard Muff values Better to have more juice on tap and adjust with the volume than not enough Add jumper as shown be...

Page 6: ...to see what suits you best This will drastically reduce your signal level so only use in circuits where you will recover some gain afterwards Add jumpers as shown below R1 39K 470K R2 3K3 3K3 R3 Empt...

Page 7: ...esponses so check out the info at the link below to see what suits you best LPB recovery stage with adjustable level No jumpers required R1 39K 470K R2 3K3 3K3 R3 1M 1M R4 100K 100K R5 10K 10K R6 390R...

Page 8: ...loss caused by the tone section This eliminates the need for the volume trimmer To do this on either of the versions with recovery section previously detailed replace the parts below and add a jumper...

Page 9: ...up to you To replace the tone control in our Rodent Leave out the Filter pot and C8 Jumper R6 Connect the BMP Tone IN pad to FILT pad 1 OUT to FILT pad 3 If you were to use a version with gain recover...