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Old 4th July 2014, 04:58 PM   #1
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Default Looking for a pot supplier (no, not that kind)

I have searched Mouser, Digikey and a few others with no luck. That's not to say they don't have it and I just couldn't find it.

I'm looking for a dual pot that has an inner and outer shaft to control each wiper separately. All I find have each wiper controlled by a single shaft, turning each in unison. Below is a pic of the type I am talking about.

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Old 4th July 2014, 07:49 PM   #2
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Vintage pots are super hard to get ahold of. Even something as simple as a potentiometer with a knurled shaft longer than the usual 10 (or was it 15) mm is impossible. I think your only option will be from a donor unit. Is it an old Yamaha or Marantz amp that you are working on?
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Old 4th July 2014, 07:55 PM   #3
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Actually, it's something new and I could use a pot that is this style, old or new. Trying to keep front panel clutter down. To many pots as it is.
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Old 4th July 2014, 08:14 PM   #4
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And who is to blame for wanting "Too Many" pots ? :-)
Vintage ones are in my experiences damaged Junk.
Vintage were of early design and finite durability.
Age has taken their toll even on used as well as NOS ..new/unused ones.
Frankly I'd rethink my number of pots/controls wish list.
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Old 4th July 2014, 08:14 PM   #5
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Good ole E-Bay.

concentric shaft | eBay
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Old 4th July 2014, 08:28 PM   #6
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Bare.....The number of pots needed it rather fixed, which is why I was looking for this type.

Katieanddad......I took a look at eBay/US and found a few. I was hoping for better ones (conductive plastic).

Anyone else? I really don't care to go 2U rack spaces. Though, I maybe could add some VU meters that way.
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Old 4th July 2014, 08:37 PM   #7
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Quote:
Originally Posted by KatieandDad View Post
Good ole E-Bay.

concentric shaft | eBay

Well done!
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Old 5th July 2014, 02:09 AM   #8
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Quote:
Originally Posted by THUMP LUMP View Post
.....I was hoping for better ones (conductive plastic).....Anyone else? I really don't care to go 2U rack spaces. Though, I maybe could add some VU meters that way.
Perhaps you are at the limit of availability with the Alpha types shown. Vintage guitar/amp types will prove to be large and have high values, so using 1U rack size cases may not be that simple and economical on panel space. Note that each type/brand will also have different inner/outer shaft hole sizes and knob requirements. Good luck with some of the more likely combinations.

Stock plastic pots are generally single gang. For professional audio use, I would think multiple gang (expensive) custom builds are still made up to order.

Here's a wide range of types including conductive plastic and some interesting notes, glossary and FAQs. Note, concentric types are available - but as custom builds - obviously no prices. http://www.potentiometers.com/
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Last edited by Ian Finch; 5th July 2014 at 02:32 AM.
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Old 5th July 2014, 04:57 AM   #9
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Thanks for that Ian. The more I refine what I am doing, I do believe that a 2u rack enclosure will work out for the best. It's the least offending compromise and will allow room to add things (like the aforementioned VU meters).
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