Gain control on custom OD

Started by Joecool85, December 27, 2005, 04:04:46 PM

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Joecool85

I'm working on putting a gain control on my custom OD and I don't have a potentiometer for it yet.  I had figured a 1k Linear pot, so I tried wiring in a 1k resistor.  It did cut gain pretty well, but not enough.  I put in a 5k resistor and it was almost shutting the effect totally off, little to no volume.  I didn't have a cap in there at all (it seems all gain controls have a cap going from lug 2 to ground), would that effect whats going on?  If so, how would I wire the cap with just a resistor to simulate 1k pot at full resistance?

Would it be:

     l
     l
     l_ cap to ground
     l
     1k resistor to ground

Or

     l
     l
     l
     1k resistor to ground
     l
     cap to ground

Or something else all together?
Life is what you make it.
https://www.ssguitar.com

Joecool85

Figured it out, I think I'm going to delete the cap and just use a 5k linear.  I tested with some resistors, 1k, 2.2k, and a 4.7k.  The 4.7 left very little sound...I think I'm going to test a ~4k or something and see if it gets louder.  If it has ok volume at 4k, I will just use a 5k linear pot and the lower 1/5th won't do anything worth beans.  But hey, if the upper 4/5ths controls it great, I don't care.  Thats how the OD on my dean markley k20 works so I'm use to it.
Life is what you make it.
https://www.ssguitar.com

Joecool85

Well, I was wrong, I test it with a 47k, not 4.7k lol.  Anyway, I put in a 5k linear pot and it works great.  All the way up is full distortion, all the way down is low distortion.  It doesn't cut it completely, but I think to get it to do that it would kill most/all of the volume.  Plus, who buys a distortion pedal just so they can turn it all the way down and have no distortion?
Life is what you make it.
https://www.ssguitar.com