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Post by geo on Apr 18, 2023 10:04:02 GMT -5
I need dual-gang mini pots, preferably each with 500k+250k in audio taper. Does anyone know where to source these?
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Post by stevewf on Apr 19, 2023 10:41:51 GMT -5
At guitarpartsresource.com they offer a "DUAL 500K/250K SPLIT SHAFt POTENTIOMETER" [sic]. Sorry, no direct link to the item itself, you have to find the item on the page. Today, their price is $9.99 They don't offer any details, and I think it might be a full-size (24mm) pot. I've gotten cheaper ones, about $7 for two Bourns mini pots (17mm)... but it required partial disassembly/reassembly. It might sound daunting, but the operation is pretty simple, and takes less than 15 minutes: Start with two pots: a dual-gang A500K and a dual-gang A250K. On each pot, straighten the four little metal tabs that hold the "lower" wafer in place; remove the lower wafer, and swap the it with the other pot's wafer; bend the four tabs back into place. That's it. Now you have two mixed pots - one is a 250K/500K and the other a 500K/250K. You can see which is which by reading the still-visible print on the wafers. The only caution is to avoid spilling the wiper assembly out of the pot while you've got it open, and generally to be gentle with that wiper; but it's easy to avoid problems there if you just keep the pot open-end-up. Done the above several times. I just realized I have no photos. I do have a photo of a push-pull pot that shows the four metals tabs, straightened (next to the words "Pot Assembly"):
In this photo, the wafer under the tabs is a "dummy" placeholder, but it's the same shape as a real wafer. Maybe you can see how it could be lifted out of the pot assembly.
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Post by geo on Apr 19, 2023 17:19:53 GMT -5
Thanks, stevewf! Unfortunately it looks like 099-0847-000 on guitarpartresource.com is a full-sized stack, so that won't fit my form factor. I had been looking at the Bourns mini pots you mentioned, but I wasn't sure if they could be surgery'd as necessary. It's very reassuring to hear you can swap the discs out with them the same as with any full-sized pots. I'll go with that!
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