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Topic: Dual Pro wiring |
Jim Newberry
From:
Seattle, Upper Left America
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Posted 10 Feb 2016 3:46 pm |
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I just got a swell 1950 D8 Fender Dual Pro (even has Tadeo Gomez's initials in it!!). No pickup bobbin collapse (Hooray!). The only things non-original as far as I can tell are the V and T pots. So I opened 'er up (glad I did) and found an unsoldered lead from the pickup (ground) and a couple of dodgy pots.
So, I replaced them with "proper" 250KA CTS pots according to the first wiring scheme on John's site: http://www.hawaiiansteel.com/graphics/pdf/fender_dual_pro.pdf.
The Volume pot has very little sweep before it's full-on, and the tone pot makes very little difference unless the volume pot is full on. I noticed this behavior before changing the pots so this is why I changed 'em. Also the guitar is really bright, so I wanted a 250K volume pot instead of the 500K that was in there.
So, would the 2nd wiring scheme give me a more expected volume sweep? Would it affect how the tone control is behaving at low volume settings?
I believe that it is wired exactly the same as this picture:
One lug to ground (bent and soldered to the pot) and one lug N/C on each pot.
Any ideas?
_________________
"The Masher of Touch and Tone"
-1950 Fender Dual Pro 8
-1950's Fender Dual Pro 6
-Clinesmith D8
-Clinesmith 8-string Frypan
-Clinesmith Joaquin
-~1940 National New Yorker
-~1936 Rickenbacher B6
-Homebuilt Amps |
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Jim Newberry
From:
Seattle, Upper Left America
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Posted 10 Feb 2016 9:18 pm
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I solved it... I moved the white lead from the pickup to the outside lug and all is happy again. It isn't quite the same as the second diagram, but it works, so...
_________________
"The Masher of Touch and Tone"
-1950 Fender Dual Pro 8
-1950's Fender Dual Pro 6
-Clinesmith D8
-Clinesmith 8-string Frypan
-Clinesmith Joaquin
-~1940 National New Yorker
-~1936 Rickenbacher B6
-Homebuilt Amps |
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Bill Creller
From:
Saginaw, Michigan, USA (deceased)
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Posted 10 Feb 2016 9:25 pm
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You did good !  |
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Jim Newberry
From:
Seattle, Upper Left America
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Posted 11 Feb 2016 7:20 am
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Mister Aeillo informs me that the first scheme is known as 50's wiring where the V and T are interactive. The more modern scheme means V and T are independent.
_________________
"The Masher of Touch and Tone"
-1950 Fender Dual Pro 8
-1950's Fender Dual Pro 6
-Clinesmith D8
-Clinesmith 8-string Frypan
-Clinesmith Joaquin
-~1940 National New Yorker
-~1936 Rickenbacher B6
-Homebuilt Amps |
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Rick Aiello
From:
Berryville, VA USA
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Posted 11 Feb 2016 8:56 am
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When you see the tone control (cap and its pot) connected to the input (outer lug) of the volume pot ... The treble is taken from the full pickup output before it passes through the volume pot ... This is the "modern" scheme ...
When you see the tone control (cap and its pot) connected to the output (middle lug / wiper) of the volume pot ... The treble is taken after the volume pot has altered the output from the pickup .. This is the "50's" scheme ...
Either way ... The input from the pickup needs to be on the (outer lug) ... As you discovered  ...
There's a few interesting wiring "schemes" used in old steel guitars ... Like the old Rickys variable loading on the pickup (rheostat) scheme (which you kinda stumbled on when you ran the input from the pickup to the wiper ... In the above photo)
Best way to figure out what you like best ... Is to experiment a bit  |
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Jim Newberry
From:
Seattle, Upper Left America
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Posted 11 Feb 2016 12:18 pm
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Thanks for the explanation, Dr. Gauss!
_________________
"The Masher of Touch and Tone"
-1950 Fender Dual Pro 8
-1950's Fender Dual Pro 6
-Clinesmith D8
-Clinesmith 8-string Frypan
-Clinesmith Joaquin
-~1940 National New Yorker
-~1936 Rickenbacher B6
-Homebuilt Amps |
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