Decoupled 50's wiring

[vegetablejoe]

Hi. I've been searching for schematics for 50's wiring for an LP/SG type guitar. I've found a few, and I narrowed in on the one provided by the Duncan site.

However when a friend followed that schematic, the vol. pots turned out to be coupled... meaning, when in the middle position, turning down a vol. and/or tone pot to zero affects both pickups.

Is there a way to combien the 50's wiring with the de-coupled scheme? I prefer being able to tweak my tone more with the latter scheme.

Thank you in advance for any info.

Jaime G.

[UnklMickey]

Jaime,

there are trade-offs involved, but the interaction can be reduced.

which drawing did you use?

is it basically this one, without the split?
www.seymourduncan.com/support/schematics/2hum_2vol_2tone_3way-w-spl.html

[vegetablejoe]

Hi unklmickey.

I used this one... www.seymourduncan.com/support/schematics/humb.html

The one you point out looks good too. I don't understand electronics, but I'm willing to try out the schematics, do some soldering and listen to the results... Thanks much!

p.s. I will probably end up with the schematic you pointed out, as I intend to coil split my neck SD '59 pup too.

[UnklMickey]

yup, they're the same animal, different values on the tone caps, and toss in a split switch (but that split is done as poorly as possible).


so back to matters at hand.

3 choices come to mind:

• 1 change to a single volume control (quit slammin' your fist on the table - i'm just kidding).
  
  
• 2 wire the pots "backwards" -- causes a pickup to lose treble when it's volume is turned down, but other one is not affected if the other volume is up.
  
  
• 3 add a 47k or 100k resistor from the wiper of each pot to the selector switch. -- i expect this to reduce volume and tone interaction, but may cause some treble loss with high capacitance (cheap) cables. this will be a beta test -- are you interested?
  

there is another way but it gets pricey: get two pre-amps (one for each pup) and mix the outputs together. best of both worlds, but in addition to cost, you have to shoe-horn the thing in somewhere. and of course now you need batteries.

[vegetablejoe]

unklmickey,

last night i finally found a diagram of the wiring I have been looking for, if you will bear with me...

i15.photobucket.com/albums/a376/vegetablejoe/wiring50sInd.jpg

I would like to try this first, and then go on to your 2nd and 3rd options, if that doesn't work out.

As I said, I'm electronically challenged, and don't really understand similarities and differences between all the diagrams and options at hand. So it will be a matter of just jumping in and trying them out for me and then listen to the results.

Thanks so much your efforts, time and patience.

p.s. I'm working in the cavity of an Epi SG, so preamps will probably not be an option, and, yes, too pricey for the ~US$220 cost of the gtar...

[UnklMickey]

thats a pictorial of one version of option2.

the tone controls are still coupled.

to de-couple them move the caps with the pickup wires.

[wolf]

Is the diagram on my website any help?
www.1728.com/guitar.htm
(second diagram from the top).

[UnklMickey]

should be.

always easier to see the picture than to just read about it.

and thats the de-coupled tone version that i just described.


thanks.