Thursday, April 12, 2012

Big Muff Mod!

Last week I did a simple Big Muff mod for a client in the band swerve. Its one of the newer, surface mount pcbs, and thus took a little digging around the circuit to find the correct place to implement the noise gate mod described here. Its pretty easy to figure out which transistor is the 2nd gain stage from looking at the stock schematic from general guitar gadgets, then it just took a bit of poking around to find the equivalent to R14, the 100k to ground. I used a 500k linear pot instead of a trim pot, to allow the user to dial the tone in to taste. Its a pretty easy mod, and super useful as are the others on that site. I hope to get a cheap newer big muff in the near future and fully mod it out.

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