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yeah thats what I did on my new feedback looper. I used a 100k pot and a 47k to ground for the volume so when it gets jumpered to bypass the pot, it still has 47k to ground instead of grounded output (no audio)
I think its better to use a DPDT toggle with the resistor values exactly like your favorite setting on the pot. I drew this for you
Or you could have two different gain pots and use the switch to toggle between them.
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culturejam wrote:Or you could have two different gain pots and use the switch to toggle between them.
I actually made a diagram for that the other day, with a 3PDT switch and a status LED. I can try and upload it if you want, but I guess someone else can easily procure a better version.
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behndy wrote:
i imagine all these shoddy spice racks littering heaven that Gawd gets pissed at you if you talk poo about 'cause "MAH BOI DEED THAHT.".
I'm doing what culturejam mentioned on my personal Rat Tail today so I can go b/w low gain to high gain. I would rather have one pedal that can do 2 things that I love than 2 pedals. My enclosure from mammoth comes today! Stoked!
eatyourguitar wrote:yeah thats what I did on my new feedback looper. I used a 100k pot and a 47k to ground for the volume so when it gets jumpered to bypass the pot, it still has 47k to ground instead of grounded output (no audio) I think its better to use a DPDT toggle with the resistor values exactly like your favorite setting on the pot. I drew this for you
Let me see if I understand, by example, r1&3 would be my gain pot, and r2+4 would be the resistance I want (whatever 3/4 of the sweep measures out to)? That would be ideal if so.
Pollinator95 wrote:
culturejam wrote:Or you could have two different gain pots and use the switch to toggle between them.
I actually made a diagram for that the other day, with a 3PDT switch and a status LED. I can try and upload it if you want, but I guess someone else can easily procure a better version.
It's a good idea but for this purpose not what I want/need. The extra pot is another needed part, another hole, and requires more room. Will be good for other DIY pursuits no doubt.
Rick, thanks for posting those diagrams. The first one I could picture in my head, but didn't think about the 2nd.
eatyourguitar wrote:yeah thats what I did on my new feedback looper. I used a 100k pot and a 47k to ground for the volume so when it gets jumpered to bypass the pot, it still has 47k to ground instead of grounded output (no audio) I think its better to use a DPDT toggle with the resistor values exactly like your favorite setting on the pot. I drew this for you
Let me see if I understand, by example, r1&3 would be my gain pot, and r2+4 would be the resistance I want (whatever 3/4 of the sweep measures out to)? That would be ideal if so.
a vol pot works like a voltage divider. but the total resistance from the source to ground remains constant. in this example, measure the pot at lugs 2 & 3 to get the value of R1. measure lugs 1 & 2 to get the value of R3. it makes sense that R1 + R3 = the total resistance of the pot 100k. adjust the volume how you like it and remove the pot to measure it again and get the values for R2 & R4. it still adds up to 100k. its just dividing in a different spot.
