Blending between two effects

[Samuel]

I know there is a commercial  pedal whose name is escaping me that does this. It uses a wah enclosure to blend between two chains of effects. I remember at the time it was being discussed that people made that process out to be somewhat difficult. I was thinking about this today and trying to imagine the pitfalls of this design.

Originally, I thought a single pot would take care of it, as in most blend pots. One effect in 1, the other in 3, and then the output in 2 from an appropriately large pot. I suppose a potential problem there would be impedance against the "tuned out effect". Forgive my stumbling incomplete knowledge of impedance.

But then I thought, well, couldn't you just use a dual ganged pot so that each effect loop gets thrown to ground when it's tuned out? Is there some difficulty here that I am missing? Is the interaction between these two effects more than could be dealt with a simple summing amp?

[gez]

Check out RG's panning for fun article.  I used this recently and it works a treat (thanks RG!).

[B Tremblay]

Another option is the Splitter-Blend at runoffgroove.com...

[petemoore]

I managed to fit a rocker assembly to turn the pot Via Treadle pedal in a Large Raco.
 Hoooo Yeahhh...Mixed signals and smoooth transitions !!
 Lead Boost if needed is right  /there.
 It was a SOB getting the treadle and clock spring takeup reel in there 'Jethro Bodine/Mcgyver Style'...it's made it through many races, it is deemed 'worthy'....when I was building it I said to myself "I Dunno.." :?
 Starting with a long case, a simple spring take up tensioner for the string driven pot pulley [like on ernie Ball Volume pedals] would make it easier to manufacture.