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| A series-parallel wiring quandary, 2 pickups http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10123&t=20032 |
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| Author: | Jeffrey L. Suits [ Sun Dec 14, 2008 7:11 pm ] |
| Post subject: | A series-parallel wiring quandary, 2 pickups |
I've gotten to a wiring place that has me flummoxed; a Yamaha bass, originally set up just like a jazz bass. First mod: change 1st volume to switched pot, to put pickups in series. Works fine. 2nd mod: repl. tone control w/EMG EXB expander, again works fine, BUT--I miss being able to roll off highs. Where I'm trying to go, now: I'd like to use DPDT on/on/on mini switch, for pickup selection, in parallel mode, and replace the 2nd volume pot, the middle one, with a tone pot. The EXB stays, as it has for 20+ years, in my other 2 basses. I'm unsure as to how to deal w/ the series-parallel & the pickup selector--which comes first, the chicken, or the egg, so to speak? I've scoured the web until I can't see straight, and can't find a schematic or diagram that helps. I'm missing something basic and stupid, I think. So, wiring gurus, this supplicant awaits... |
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| Author: | Ziegenfuss [ Mon Dec 15, 2008 8:31 am ] |
| Post subject: | Re: A series-parallel wiring quandary, 2 pickups |
Jeff, I am not sure that I can help much but if I understand you correctly you want to have a DPDT switch that: -activates neck pickup alone -activates both bridge and neck -activates bridge pickup alone This would take place in the standard jazz wiring scheme of parallel pickup orientation... In addition to this you have a single volume pot with with a push/pull action to control series/ parallel pickup orientation as well as a single tone control with EMG expander... Then you have an additional volume pot that you want to lose for the sake of another tone control...which would leave you with one system volume regardless of the selection of your pickups... if this is right, I will gladly take a stab at looking what form this may take. From experience, I do recommend only having one volume with a series/ parallel configuration, only because in series configuration it becomes superfluous... Stephen |
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| Author: | Jeffrey L. Suits [ Tue Dec 16, 2008 12:49 pm ] |
| Post subject: | Figgered it out... |
The light went on, when I read that the switch was "interrupting"--okay, send the ground of one PU through the switch, one side goes to ground, other goes to hot lead of the other PU, which is wired into the switch in the same way, except that it's the hot lead that's interrupted in its path. The only caveat, is that there is one position on the PU selector that is OFF, when the bass is in series. NBD |
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