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3/8" bushing/longer thread solid round shaft pots?

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  • 3/8" bushing/longer thread solid round shaft pots?

    i'm in need of them...specifically a dual 1m audio and a 1k lin. i like Bourns but cant' find the values i need.

  • #2
    Look around antique electronics supply, tubesandmore.com
    you have to special order from a bourns dealer, they have audio grade pots.
    may not be stocked, but you can order it.

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    • #3
      Alpha does make the dual pot in both linear and audio (approx 15% taper). They DO have a shallow thread, BUT, it's a 3/8" hole. It's a fairly shallow thread. You may need to modify mounting to accomodate. I don't know of a deeper thread 3/8" hole pot in a dual 1M of any taper. Good luck.

      Is this for a specific repair? Is this for a personal design?
      "Take two placebos, works twice as well." Enzo

      "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

      "If you're not interested in opinions and the experience of others, why even start a thread?
      You can't just expect consent." Helmholtz

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      • #4
        i have an amp that a friend built for me. its an Orange clone/copy so he made an Orange style face plate out of more than heavy enough steel which is the same gauge of steel that he used for the chassis.

        i guess i'll start at Bourns site with an email to them...

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        • #5
          Originally posted by Foxfire View Post
          i have an amp that a friend built for me. its an Orange clone/copy so he made an Orange style face plate out of more than heavy enough steel which is the same gauge of steel that he used for the chassis.

          i guess i'll start at Bourns site with an email to them...
          You should look through the bourns catalogs and formulate the part number:
          http://www.bourns.com/data/global/pd..._pro_audio.pdf
          http://www.bourns.com/data/global/pdfs/PDA24.pdf
          For example, PDA242 SRT-02- 105A2 is
          dual concentric 1 meg audio taper, with a plain shaft...
          You MUST research your part numbers, before you make a special order.

          Unfortunately, a lot of the people who sell off the shelf controls, won't be bothered to explain the physical measurements.
          OR if they do, the measurements are WRONG. and so, I can see the frustration.
          I have the same difficulty all the time.

          If I was going to do this I would contact Precision Electronics Canada, and ask them to make the controls.
          Just because, I like their construction and I like the super even taper of the control...
          ( Audio taper can mean quite a range of options, and many pots are different)
          AND I like the stainless steel construction.

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          • #6
            i did start looking in to Bourns numbering system but i'll take a look a PEC before i get to involved with Bourns. thanks for the tips...

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            • #7
              Originally posted by Foxfire View Post
              i did start looking in to Bourns numbering system but i'll take a look a PEC before i get to involved with Bourns. thanks for the tips...
              Precision Electronics Corporation: Potentiometers
              Check out MIL style 2RV7
              CALL the factory and talk to the applications engineer directly.

              If I was building from scratch, I would use PEC without hesitation.
              I have never found a finer control for audio.
              NOTE: PEC has stainless steel shaft. You MUST use knobs with a steel set screw. Brass set screw will not work.
              Fender knobs have steel set screws. Cheap knobs do not.

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