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Post by pete12345 on Aug 12, 2012 8:15:10 GMT -5
Hi all. Thought I'd chime in with another wiring diagram. This one is intended to give you all six basic combos of 2 pickups, using a DPDT toggle switch and a 3P4T rotary. The rotary switch selects between neck only, both pickups in phase, both pickups out of phase, and bridge only. The toggle chooses whether the 'both' positions are in series or parallel. Since PooP tends to sound likes its name, I've worked in HooP in the parallel position instead, which is much better. In series, you get normal SooP. The design is intended to be used with a single volume control, with tone controls up to the user. I'd go for two tones, each wired directly to their respective pickup. The intended 'target' for this is a H-H guitar, with 2V+2T controls. One volume is replaced by the rotary switch, with the series/parallel switch taking the place of the standard pickup selector, or alternatively as a push/pull on the volume pot. This leaves the two tone pots free for push/pulls allowing splitting or internal series/parallel within each pickup. For a strat-style guitar with two pickups, you'd have to either have a single master tone, use stacked pots, or find space for the rotary elsewhere on the pickguard. Enjoy! Pete
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Post by newey on Aug 12, 2012 8:35:00 GMT -5
Pete! Welcome back, it's been a good while. I think you mean that the toggle selects series/parallel for the "both" settings?
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Post by pete12345 on Aug 12, 2012 12:00:37 GMT -5
You're right, of course. Edited.
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Post by reTrEaD on Aug 13, 2012 7:45:27 GMT -5
Since PooP tends to sound likes its name, I've worked in HooP in the parallel position instead, which is much better. In series, you get normal SooP. This is possible because of a good (imho) decision you made in the basic architecture of this design. Given the constraints of the switches, (3P4T switch for pickup selection and DPDT for mode selection) there are 2 paths from which to chose. You could have taken the more obvious route of using the DPDT as a phase switch and embedding the series/parallel function in the pickup selection. But that would have locked you into having the same pickup connections whether in-phase or out-of-phase. HooP would have still been possible in the parallel mode, but would have forced the cap to also be in place for in-phase parallel mode. Because you chose to embed the OoP function into the pickup selection, you were able to use the cap in series with the ground connection of the neck pickup in the parallel out of phase mode but bypass it in all other modes. Close examination reveals how this is possible. The redundant series link connection, using both poles of the s/p switch. This is a very nice piece of work. +1
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Post by pete12345 on Aug 13, 2012 9:27:29 GMT -5
Thanks I did originally draw it with the same switch functions, but normal out of phase in both series and parallel modes. I later redrew it to incorporate the capacitor after trying half out of phase. The same functionality could possibly be achieved by using series/parallel on the main switch and a separate phase. Two poles of the rotary would be used for pickup selection in the same way as the original 4-way switching for a telecaster. The third pole would then be used to bypass the capacitor in all positions except the 'both in parallel' setting. I might have a go at drawing this setup some time.
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Post by pete12345 on Aug 13, 2012 10:02:28 GMT -5
Turned out to be easier than I thought. So, if you prefer the series/parallel to be part of the main pickup selector: As I thought, two poles of the rotary switch are now shamelessly stolen from the tele 4-way switching. The third does nothing but short out the HooP capacitor unless both pickups are selected in parallel.
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Post by reTrEaD on Aug 13, 2012 15:25:12 GMT -5
That's exactly right, Pete. The first version was a little more interesting. There the third pole was avoiding the hanging from hot issue. Still, this design does function.
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