Mach1 mod help!

Travis

Active member
Hi, I have an extra southern belle overdrive PCB. Could I mod it to get the Mach 1 circuit? Thanks :)
 
Yes, SB is so similar, it just has an extra set of clipping diodes, and you can leave those out.

Here's the full list of changes:
R4 change 22K to 4.7K
Drive Pot change A1M to A500K
Volume Change A250K to A100K
Leave out diodes D6 and D7
Change op-amp TL072 to OPA2134 (although TL072 should work just fine too)

I think that's correct, but you should double check the schematics to see if I missed something.
 
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