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What's the story with this tone pot?


Beedster
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[quote name='Beedster' post='393570' date='Jan 28 2009, 12:14 PM'][attachment=19308:CIMG0437.JPG]

Volume pots are original and the tone pot seems to be the same age and condition. Is this a standard volume pot for the era, I've seen a few like it in pics elsewhere? Why is it so bloody big!
Chris[/quote]

It looks like a double ganged pot. Are both sections wired?

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+1

Since it's in a Jazz bass it's more likely to be a blend pot....

[url="http://www.stewmac.com/shop/Electronics,_pickups/Potentiometers/Blend_Pots.html"]http://www.stewmac.com/shop/Electronics,_p...Blend_Pots.html[/url]

A blend pot is like two pots connected to the same single shaft but the resistance tracks on the pots work in opposite directions. So - as you turn the shaft the resistance on one pot increases while the resistance on the the other decreases. It allows you to blend the output of two pickups using a single control - all neck at one extreme, all bridge at the other, with varying degrees of both in between.

From what I can see in that photo it looks like only one half of the pot is wired up, so it'll just act like an ordinary pot.

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Hmm, if it was a blend then the other 2 pots must be master vol and master tone, in which case there would be a cap attached to the 2nd single pot (which there aint);if it was a TBX tone then that still leaves you 2 vols for each JB pup and tbx as a common tone.

Edited by Al Heeley
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[quote name='Buzz' post='393914' date='Jan 28 2009, 06:30 PM']Christ, can you confirm what Bod said about only set of pins on the dual pot being connected?

It's a '73, doesn't that make it around one of Fender's changeover periods, and the time when they normally go parts bin raiding?[/quote]

Are you angry or did you spell my name wrong ;)

Thanks for the replies guys, completely forgot I'd posted this. Only the bottom of the two is connected. The reason I ask is that the double pot seems to be the same age as the others and I saw an early 70's Jazz on the bay recently with the same. Perhaps it was simply a parts raid, certainly it is only doing the job of a normal tone pot?
Cheers
C

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[quote name='Buzz' post='393914' date='Jan 28 2009, 06:30 PM']Christ, can you confirm what Bod said about only set of pins on the dual pot being connected?[/quote]


Well I know Beeeeeedster is held in high esteem around here but I didn't realise ..

Oh hang on, He can't be the true Christ, he's selling his last P bass ...

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Ooh, whoops! Sorry Chris! ;)

Not quite sure how that extra 't' ended up added on there :S

However, as we've already come to the conclusion that due to Dood's postcount he's omnipresent through time, ergo he's God, does that mean you're actually Dood's sprog? :P

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  • 1 month later...

Another mysterious double tone pot in a '75 Jazz on the bay

[url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300303001942&indexURL=11&photoDisplayType=2#ebayphotohosting"]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...bayphotohosting[/url]

[attachment=22872:pots.jpg]

Edited by Beedster
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