Blue Magic - parts question

Started by 3/4 North, August 10, 2006, 01:44:18 PM

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3/4 North

I'm building the blue magic to the specs at ggg, with the mod to the tone stack described on this forum. Got the parts in from mouser but the tone control confuses me.

1 - SPST toggle switch (Mids Boost Switch)
   Recommended a push/pull switch on the Tone pot
   as mouser #313-1600-50k
http://www.mouser.com/catalog/specsheets/143144.pdf

How does this get wired?

sta63bmx

It just takes that 530pf (?) in and out of series with the 470pF or whatever is in there.  I think the 530pF is a parallel combo of two caps since it's a weird value.  Anyways, the caps are connected at the "bottom" and then the switch makes or breaks the connection at the "top" that completes the parallel connection.  So like...



Clicky for bigger image.

Just wire the top of the 470pF or whatever to say, the left terminal on one pole and wire the top of that 530pF combo to the middle terminal on that pole.  That's a DPDT push-pull switch from Hoffman, looks like the Mouser part. 

FWIW, I can't tell the difference between mid-boost on and off in my Blue Magic.  I really liek the pedal, though.  Great rhythm pedal.

3/4 North

And the top lugs get wired same as the regular pot in the diagram I take it.

Thanks!