SWTC - Drawing?

[mr.adambeck]

Hi - So I'm such a newbie that I don't know what I'm doing when working from schematics.
I thought I could figure out the Stupidly Wonderful Tone Control from the schematics on the net, but I seem to be having major problems. 

Does anyone have a layout/drawing of how to wire it that they could share?

I feel like a total idiot for not being able to figure out something with stupid in the title of it....

[mr.adambeck]

This is what I'm trying to figure out:



I just need to know how to wire it to a pot, I seem to be very confused (IE can't get it to work properly).
It's for a Bazz Fuss that doesn't have a ton of output.  I originally had a BMP tone pot in there, but it cut the volume too much, as well as too much low end.  I'm just trying to roll off some highs to make it a good pedal for a bassist.

I could also try this one:



but I'm afraid it might cut too much volume.  I'd like to keep as much gain as possible.
Regardless, I'm still struggling with getting these wired up to a potentiometer, so any help would be appreciated.
I normally just work from layouts and am not too familiar with schematics.

[aron]

 Check out this picture. The left drawing is the back of the of the pot.

[GibsonGM]

Get working on that, and before you know it those squiggles will seem like real parts to you )   You can't hurt anything by wiring the SWTC wrong - maybe you'll just connect it to ground by mistake, and you won't get any signal out the other end. 

Think of each "node" in the schematic as "the place where the cap hits the 2 resistors that are connected together", etc. It's that literal.   It's surprising how fast the intuition will take over, and you'll no longer think about it. 

[Mark Hammer]

R1 in the first drawing is intended to provide the highest rolloff point (in conjunction with C1).  So, the resistance between the junction of R1 and the wiper of the the pot needs to get smaller as you turn clockwise.  That means that R1 goes to the lug of the pot which you would normally use as the "input" lug if that same pot was being used for volume adjustment.

[mr.adambeck]

Okay, I've yet to try it out, but I think it all makes sense now.  I didn't realize that R2 in the first drawing was a pot on it's own.  I was trying to connect r1 to the first leg of a pot, r2 two the second leg and r3 to the third, etc. 

I can't try it out until my wife wakes up (don't think she wants to be woken up to some loud, raging bass fuzz on her day off!), but I think I'll get it right this time.

[Derringer]

dude ... yes she does