What kind of stomp switch...

[obblitt]

Should I use to switch between two pots? I want to be able to stomp between a low gain setting and a higher gain setting on the drive control of my RAT clone.

Also, I'm just curious about pot values for use as the drive control. I see a lot of people say that higher value pots yield more drive () and it would be cool to use something like that for this little mod I'm planning.

Thanks!

[svstee]

Do you want an LED? If not:
http://aronnelson.com/gallery/main.php/v/DRAGONFLY-LAYOUTS_0/The-Mod-Zone-_/DUAL_VOLUME.jpg.html
DPDT

[obblitt]

I do want to use two LEDs, one for each setting.

[svstee]

Why do you need two? If it is off, its the first. If it on its the second.

[petemoore]

  Why not just one side of a DPDT, signal input to the center [pole] and an output arrangement [volume pot etc.] for each throw.
  Then wire the LED's supply to the pole of the other side, an led/resistor on each throw.  ?
Just thought it through, both pots would contribute to signal loading from wiper/gnd. Which...wouldn't actually be a problem if you're not turning them down very far and use large-ish value pots, a 3pdt doing the shown [dpdt] switching but using the last column of lugs to do the LED's switching.

[obblitt]

Why do you need two? If it is off, its the first. If it on its the second.

I like pretty lights.

[Dragonfly]

Easy enough...

drawn EARLY in the morning (still waking up) but should work just fine....

if you are using this as the output volume (end of the circuit) then I'd add a pulldown resistor on the output

[frokost]

Add a current limiting resistor for the LEDs or they will burn out.

[petemoore]

  Sometimes the pot is the pulldown resistor.

[Dragonfly]

Add a current limiting resistor for the LEDs or they will burn out.

Unless you use LEDs with built in resistors.

If not, a small resistor between LED+ and 9V+ will be fine

[Dragonfly]

  Sometimes the pot is the pulldown resistor.

But not in this case, because the switch changes between the pots...you can still get some pop, thus the reason for adding the pulldown on the output. Not always necessary, but a $.02 precaution....

[obblitt]

Thanks for the diagram, but how do I change it for use as the gain control?

[Dragonfly]

Thanks for the diagram, but how do I change it for use as the gain control?

Instead of connecting lug 1 on the pots to ground, you'd connect lug 2 and lug 1 (on each pot) together, just like a normal Rat gain control.

[RickL]

In which case you'll only need a dpdt switch. Since each pot only has two wires going to it you can get away with switching only one. It doesn't really match which. Connect the other two wires together permanently.