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I'm building a gainclone and I'm looking at using one of the PEC carbon pots. For now, the pot will be used as a passive pre in the same chassis. Usually 25 or 50K log tapers are used. Is it possible to use the the 1M linear law-faking in this application, or should I stick with the log taper? I know some have issues with the taper, but that doesn't really concern me. I just want to be sure the resistance is appropriate.
Follow Ups:
The 1meg with law faking resistors is OK. Just pick the resistors value for the pot value you need. We've found the lower value resistors (ie <50k) give a friendlier taper.
Thanks Brian. How exactly do you hook up the pot in this fashion? I've been looking over numerous posts on this and am still a little unclear. It doesn't help that I've seen people say different things about the proper implementation. I've also received a couple of emails asking if I know how this works, so I don't think I'm alone. If you or someone else could explain it, that would be great. If somebody could post a schematic, that would be even better. Thanks again!
Start with a 1meg linear pot and choose resistor shown to get resistance needed, ie 50k for 50k log taper pot. Lower value tends to give more friendly taper. Otherwise sound comes on quickly at the beginning and fine adjustment is pushed to the 12oclock position.
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