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Pigtronix - Fat Drive

Posted: 14 Dec 2013, 14:28
by ironman28
4049 based OD. Very thick low end. Sounds best with SC pups

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Re: Pigtronix - Fat Drive

Posted: 08 Feb 2018, 22:50
by bc108
Red Llama inspired?

Re: Pigtronix - Fat Drive

Posted: 24 May 2018, 05:10
by LeadG
Has anyone traced this to make a schematic yet?I just bought one and plan on trying to make a schematic for this if i can.If there is anyone who would want to help me with any pointers on how to make a schematic i sure would appriciate the help.this will be my first attempt at making a schematic so i will probly take a long time to finish it.I have already traced some of the audio path to and thru U1 and half way through U2.

Re: Pigtronix - Fat Drive

Posted: 25 May 2018, 14:08
by EmmG
May have similarities to the Polysaturator, also uses a 4049.
viewtopic.php?f=7&t=28665

Re: Pigtronix - Fat Drive  [traced]

Posted: 26 May 2018, 13:07
by PedalPCB

Re: Pigtronix - Fat Drive

Posted: 02 Jun 2018, 02:06
by LeadG
Thank you very much for the schematic. I have a Tech21 American Woman pedal comming soon.Ill post up pics and request to see if anyone would want to try tracing it for a schematic.Soon as i get it i'll post the pics in a new thread.thank you again for your time and the schematic.

Re: Pigtronix - Fat Drive

Posted: 27 Oct 2022, 04:01
by karter2000
Sorry to dig up an old one, but I figured I would contribute seeing how I've got so much from FSB over the years.

I have a Bass Fat Drive that I bought a while back, and was planning to sell it but I figured I'd trace it out first:
Pigtronix Bass Fat Drive PCB.jpg
I measured all the caps and compared the resistor values to the schematic PedalPCB posted. The only differences that I could see is four caps, which look like the footprints were added to the PCB in addition to the guitar version caps.

C3B: 15n
C4B: 150n
C6B: 150n
C8B: 56n

Everything else, including the pots, diodes, IC's, etc look the same as the guitar version, with the exception of R9, which I think for both versions is 16k.