Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: joesatch on April 05, 2022, 09:11:19 pm

Title: need help finding a pot
Post by: joesatch on April 05, 2022, 09:11:19 pm
does anyone know where in the U.S. i can find a pot like this? Dual gang 1 meg audio with dpdt?  I have searched all day online and only in europe they have this pot will cost me $40 with shipping from them and takes a long time to receive. Many thanks to all.

https://www.tubeampdoctor.com/en/1m-log-push/pull-pot-dpdt-stereo-suitable-for-mastervolume (https://www.tubeampdoctor.com/en/1m-log-push/pull-pot-dpdt-stereo-suitable-for-mastervolume)
Title: Re: need help finding a pot
Post by: tubeswell on April 05, 2022, 09:54:19 pm
Try one of the Chinese stores on eBay (or the Chinese version of eBay)
Title: Re: need help finding a pot
Post by: joesatch on April 05, 2022, 09:59:43 pm
checked ebay and nada. I could order from Ali-express but it takes 6 weeks to receive
Title: Re: need help finding a pot
Post by: thetragichero on April 05, 2022, 10:09:14 pm
dang this reminds me of high school  :l2:
Title: Re: need help finding a pot
Post by: tubeswell on April 05, 2022, 10:11:32 pm
dang this reminds me of high school  :l2:


I'm pickin' high school will be nearly out for final mid term break in 6-weeks
Title: Re: need help finding a pot
Post by: Blueboozer on April 06, 2022, 12:28:10 am
https://www.ebay.com/itm/1-B500K-DPDT-Push-Pull-Split-Shaft-Linear-Taper-Guitar-Tap-Pot-/274983559023?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0
Title: Re: need help finding a pot
Post by: joesatch on April 06, 2022, 06:05:04 am
https://www.ebay.com/itm/1-B500K-DPDT-Push-Pull-Split-Shaft-Linear-Taper-Guitar-Tap-Pot-/274983559023?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

that's 500k, linear and likely single gang. Nope.
Title: Re: need help finding a pot
Post by: Kaaskop on April 06, 2022, 06:56:09 am
Does this work?

https://www.amplifiedparts.com/products/potentiometer-alpha-1m-audio-7mm-bushing-dpdt-switch (https://www.amplifiedparts.com/products/potentiometer-alpha-1m-audio-7mm-bushing-dpdt-switch)
Title: Re: need help finding a pot
Post by: bmccowan on April 06, 2022, 07:12:21 am
closest I see:
https://www.electronicsurplus.com/mallory-126255-235640-potentiometer-1meg-dual (https://www.electronicsurplus.com/mallory-126255-235640-potentiometer-1meg-dual)
Title: Re: need help finding a pot
Post by: mresistor on April 06, 2022, 07:14:33 am
The difference between the one at AES and the one at TubeampDoctor is that the AES pot is for a PCB and the other one has terminals for soldering wires to. You could ask Alpha what their Part # is for the one with wire terminals  - they have contact info..  http://www.alpha-products.com/Potentiometers/potentiometers.html
Title: Re: need help finding a pot
Post by: mresistor on April 06, 2022, 07:23:46 am
How about this?   https://www.ebay.com/itm/125138107973?hash=item1d22cffe45:g:5ZkAAOSw9N5iAgIq
Title: Re: need help finding a pot
Post by: joesatch on April 06, 2022, 07:59:06 am
closest I see:
https://www.electronicsurplus.com/mallory-126255-235640-potentiometer-1meg-dual (https://www.electronicsurplus.com/mallory-126255-235640-potentiometer-1meg-dual)

The switch on that engages when the pot is turned. I need a push pull switch
Title: Re: need help finding a pot
Post by: joesatch on April 06, 2022, 08:00:24 am
How about this?   https://www.ebay.com/itm/125138107973?hash=item1d22cffe45:g:5ZkAAOSw9N5iAgIq

that's single gang. i need dual gang (also referred to as a stereo pot)
Title: Re: need help finding a pot
Post by: mresistor on April 06, 2022, 08:26:03 am
Yes stereo  sorry ..   good luck finding a US source.

Title: Re: need help finding a pot
Post by: uki on April 06, 2022, 09:11:13 am
Here a couple places, maybe you can find there.

https://www.amplifiedparts.com/products/potentiometer-bourns-audio-solid-shaft-dual-mini-push-pull

https://tubedepot.com/products/alpha-16mm-audio-taper-pot-w-dpdt-push-pull-switch-7mm-bushing-pc-mount

Title: Re: need help finding a pot
Post by: joesatch on April 06, 2022, 09:16:27 am
Here a couple places, maybe you can find there.

https://www.amplifiedparts.com/products/potentiometer-bourns-audio-solid-shaft-dual-mini-push-pull

https://tubedepot.com/products/alpha-16mm-audio-taper-pot-w-dpdt-push-pull-switch-7mm-bushing-pc-mount

Thanks but neither of those are dual gang 1M pots.  I guess i need to order a big box of these from Europe and start my own business..
Title: Re: need help finding a pot
Post by: thetragichero on April 06, 2022, 05:59:13 pm
are you repairing a piece of gear for a customer? pass that cost onto them and move along
if not, a good rule of thumb is to not build with unobtanium parts. drill another hole for a switch and be done with it
Title: Re: need help finding a pot
Post by: bmccowan on April 06, 2022, 06:28:07 pm
To tragichero's point. I suggest posting the application/schematic as forum members might have some clever work-arounds which would depend on what the push/pull is controlling.
Title: Re: need help finding a pot
Post by: joesatch on April 07, 2022, 01:35:00 pm
I stumped you guys . i bit the bullet and ordered the $8 pot for $40.  :l2:
Title: Re: need help finding a pot
Post by: mresistor on April 07, 2022, 01:58:51 pm
I stumped you guys . i bit the bullet and ordered the $8 pot for $40.  :l2:


My thought was . buy ten and list 8 of them on ebay or craigslist for $12+  :-)


Of course when you do that then before you sell them all AES or some other company stateside will start carrying them for $5

Title: Re: need help finding a pot
Post by: bmccowan on April 07, 2022, 04:20:15 pm
So after all that you're not going to tell us what the amp and the application is? Come on - we are all nosy tube geeks. Well at least I am. :icon_biggrin:
Title: Re: need help finding a pot
Post by: mresistor on April 07, 2022, 05:21:15 pm
You didn't stump us..  the world did ..

Title: Re: need help finding a pot
Post by: joesatch on April 07, 2022, 06:06:34 pm
So after all that you're not going to tell us what the amp and the application is? Come on - we are all nosy tube geeks. Well at least I am. :icon_biggrin:
jose dual mv pot.

Title: Re: need help finding a pot
Post by: bmccowan on April 08, 2022, 10:04:36 am
Thanks - best of luck with the project.