Switching pairs of volume/gain pots using a 3PDT, with LED channel indicators !

[frequencycentral]

From this thead: http://www.diystompboxes.com/smfforum/index.php?topic=85455.0

So you have a dirtbox which you just love with the gain way up, and the volume way down. Great. But you also love it throttled back with less gain and therefore more volume. Or whatever. Being a live player and lacking the prerequisit extra set of arms to make the instant control changes, you'll probably love this............



Each pair of pots are in parallel, therefore the resistance is halved, so you may want to double the stock pot values. Really, it's only the resistance at lug 2 of each pot that we are concerned with, as the resistance between the signal and ground remains constant regardless of how the pots are set. So we are just switching from one set of wipers to another set of wipers.

Obviously it won't work for every dirtbox, a particular topology is required. But if that's your bag, now it's got 2 channels.............

Did I miss anything?

[Perrow]

I've been thinking of doing the same (or at least similar) thing for a Noisy Cricket build, to switch between two sets of pots.

You could add ldr's to the ground connections to increase the "off pots" resistance to ground.