Here's something useful I drew up

[petemoore]

  Useful for other applications but..
  In a two circuit box, say boost>Fuzz, using the boost to drive bojeez into the fuzz [a setting that would take your head off when the dist is bypassed], this puts a second volume control into play on the boost, providing a separate boost vol., when the Dist is off.
  http://img.photobucket.com/albums/v207/petemoore/BoostDropper.jpg
 

[Meanderthal]

 Hey, that's a great idea!

[sfr]

Great, easy solution for a problem that's bugged me before.  Wish I had thought of that before I drilled the plate for my LPB with only one dial.

[petemoore]

  yupp, for those two circuit distorters.
  The Dist+ is cool, and works really great with a booster in front of it, I'm using an OS comp.
  To make the comp into distortion sound right the comp has to be turned a good bit above unity, this is much too loud for my amp if I want to go from Distortion w/compression [heavy dist] to compression.
  I thought I wanted a 4PDT to have better control over that...then I figured out that the 'extra lug' on all my 3PDT's wired for TB/LED..each one had a switched ground lug staring right at me the whole time !!!
  At that time it was a TS/100k volume pot to which I added a 0k-20k switched resistance across it, using that already wired as switched ground lug to do it!

[Auke Haarsma]

let's see if I understand

the 20k pot only comes into play with the 2nd box (fuzz) is disabled. If the Fuzz is enabled, the 20k pot doesn't connect to ground, so it wouldn't affect the sound. As soon as I disable the fuzz, the 20k pot of the booster connects to ground and drops the volume.

Right?

If so, this idea would be perfectly timed, since I want to add a booster in front of my Thor.

[petemoore]

  That's pretty much it !
  it..adjustably reduces the value of the booster pot really...a simple VR shunt to ground affair, using the 'unused' switched ground of the Distorters 3pdt. at the other side the switch from the LED's sw'd ground.
  That could be used also to raise gain on something, by switching out the ground say to an emitter bypass cap.
  Basically, there is a switched ground on your 3pdt which can be assigned...to alter the '*other' circuit.
  'the circuit of course will be in bypass mode when the altered function is 'in'..that'd be of no use...except maybe for grounding the input on say an Uglyface, so as to squelch the noise pickup in bypass mode of that one, or some other circuit like a phaser which clicks even in bypass mode.
 

[johngreene]

wouldn't it make more sense to connect the 20K to the wiper of the 100k pot? Otherwise you are relying on the boost to have some kind of series resistance in its output, if it is capable of driving a <20K load, this circuit won't really do anything.....

--john

[petemoore]

  Excellent point John Greene !
  It worked good with a Sparkleboost>Dist+.
  The 20k pot of course at CCW is 0k, so it does adjust the output Level sufficiently.
   Here it is:
  http://img.photobucket.com/albums/v207/petemoore/BoostDropperIIl.jpg