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  #1  
Old 07.20.12, 12:55 PM
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Question Balance pot in JM project

I'm working on my next Warmoth project and I need some help/recommendations. What I intend to do is wireing a balance pot to the middle position of a three-way-switch so I can blend from one PU to the other instead of just having a 1:1 mix of them. Fine thing, did that before. What I have noticed is that in the center position of the balance pot the trebles get lost a little. I assume this is the regular loss of treble occuring when a volume pot is rolled back. In the back of my head I remember that there is a fix attaching a capacitor to it somewhere. I tried the search button on this but gave up after half an hour although I'm quite sure I've read it here somewhere, so sorry for bothering you. Finally my questions:

Is my asumption right or is there another reason for the slight loss of treble?

if yes
How do I have to wire the capacitor?

Which values are suitable in general and for balance pots in particular?

Thanks.
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Old 07.22.12, 8:05 AM
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I've found a nice desciption of the treble-loss-on-volume-roll-back-problem:
Voodoo Volumepoti (it's in german though, but provides several remedies and a detailed explanation of the problem).

Anyway I'm still not perfectly sure if this is my problem and still need recommandation for capacitor values for balance pots.

Suggestions anyone?

Thanks.
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Old 07.22.12, 1:33 PM
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I don't know anything about blend pots but I always wanted to try and connect both pickups to their individual volume roller knob (instead of tone and volume) on the rhythm circuit to blend them. It's a little more complicated than turning a blend knob though...
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Old 07.22.12, 2:25 PM
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That's what I try to avoid. I think it's far more comfortable to use just one pot instead of two. It's a great thing (apart from the mentioned flaw). The general circuit will quite simple for a JM: master volume, master tone and a switchable low-cut but in the end it will be more like jazzmaster-shaped les paul junior anyway;-)
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Old 07.22.12, 2:58 PM
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Quote:
Originally Posted by Uome View Post
I don't know anything about blend pots but I always wanted to try and connect both pickups to their individual volume roller knob (instead of tone and volume) on the rhythm circuit to blend them. It's a little more complicated than turning a blend knob though...
Is this like a Gibson control scheme with two volume knobs? I love Gibsons for the reason that it's easy to get what amount out of each pickup you want in the middle position.
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It would be so we could run from one side of the stage to the other, switch from rhythm to lead, run over to the guy on the hammonds to turn on the flanger, and then sneak up behind the drummer and start going nuts on the wah.

Only to realize those pedals were hooked up to the bass!
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Old 07.23.12, 2:34 AM
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Quote:
Originally Posted by cerebro911 View Post
Is this like a Gibson control scheme with two volume knobs? I love Gibsons for the reason that it's easy to get what amount out of each pickup you want in the middle position.
Don't think so. I'm an idiot when it comes to wiring but my idea was to simply replace that tone roller knob with a volume but that may only work good in theory.

http://zeus.lunarpages.com/~jimshi2/...jazzmaster.jpg
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Old 07.23.12, 10:33 AM
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Quote:
Originally Posted by cerebro911 View Post
Is this like a Gibson control scheme with two volume knobs? I love Gibsons for the reason that it's easy to get what amount out of each pickup you want in the middle position.
I think the way it works yes, but the circuit will certainly look different because you have to switch between the lead circuit and the former rythem circuit then consisting of two volume pots.
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Old 07.23.12, 10:50 AM
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About losing treble:

Guitar Treble Bleed, Part 1: Evaluating Capacitors - YouTube
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Old 07.23.12, 11:27 AM
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Originally Posted by Uome View Post
That's a nice piece of information. Thanks a lot! I think I have just added a pair of alligator-clips and a pile of capacitor to my shopping list;-)
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Old 07.23.12, 12:05 PM
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or mayby not: Guitar Treble Bleed, Part 3: Problems with multiple volume pots - YouTube. As far as I see this will be exactly my problem
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  #11  
Old 07.23.12, 1:41 PM
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I hope I'm not breaking the rules but you could try asking here:

OffsetGuitars.com • Index page
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