fvh
Rookie Solder Flinger
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Post by fvh on Aug 11, 2017 7:51:11 GMT -5
Hello. I hope someone can help me with this problem. I have a 12-string Jerry Jones. It has three lipstick pickups, a 5-way selector and 1 tone/1 vol. In positions 2 and 4 it has neck/middle and bridge/middle in series. I'm not so keen on the series sound, and would like to have the same configurations in parallel - as on a Strat. But the series option could be nice to have, so the wiring I'm after is this: A push/pull (or push/push?) tone pot that gives parallel config in pos 2 and 4 (stratocaster) when in DOWN/unengaged position, and series config in pos 2 and 4 in UP/engaged position. Is this possible? Thank you so much for your time.
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Post by reTrEaD on Aug 11, 2017 12:00:49 GMT -5
It looks completely possible. From the pics, it would appear you have a superswitch. Between that and a DPDT push-pull it gives you more than enough switching to get you where you described. If you can make a drawing indicating the present wiring, perhaps someone can alter that so that you'll need to make the fewest changes possible.
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fvh
Rookie Solder Flinger
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Post by fvh on Aug 12, 2017 13:35:57 GMT -5
Thanks a lot! I'll get on it.
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Post by sumgai on Aug 12, 2017 22:23:17 GMT -5
fvh,
Hi, and welcome to The NutzHouse!
Most of the time, reTrEaD and I see eye-to-eye about half the time we are both participating in the same thread. This is one of those times I'm gonna disagree with him.
1) You're gonna need to completely start over, that will be easier than trying to keep any of the current wiring in place. Why? Because in your setup, the three pickups are wired in series, not in the usual fashion found in so many guitars. This is actually faster to accomplish at the factory, but as you note, only a few players appreciate the series sound of single-coil pups. As an option to parallel... sure, let's do it. As the only option.... eh, not so desirable.
In order to get just one pup (or two adjacent ones) to sound out in a series scheme, the switching is set up to short out (or shunt, if you're of the British persuasion) the remaining undesired pickup(s). What that means for you is that there are several short jumpers on your 5-way lever switch, and quite literally, all of those are going into the dumpster.
2) I'm sorry to have to say, you're gonna need more than a simple DPDT switch. In this case, nothing less than a 4PDT will do the job. I did a preliminary workup with only a DPDT, and found a major problem. In series mode, you get the M pup turned on all the time, no matter what position the superswitch might be in. To overcome that limitation, you'll need 4 poles, not just two.
3) Here's a tidbit for you: it doesn't matter which order a series connection is hooked up, any pickup can be first in line, and any other pup can be the last in line - the results will always sound the same to your ear. That said, and knowing that we want to switch the Middle pup between series or parallel in comparison to the B/N pups, we can place the Middle pickup at the end of the signal chain.
4) I'd like to take this opportunity to introduce to you a wiring scheme made by one of our long-time members, Mike Richardson. Therein, you have the standard Strat parallel combos in switch-down mode, and in switch-up mode you also have nearly every series combo. Here's a link, be sure to read the entire thread for all of the posted diagrams, as some of them have been destroyed by that ultimate WWW breaker, Photobucket:
Mike Richardson's Strat Mod
HTH, and good luck!
sumgai
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Post by JohnH on Aug 13, 2017 0:06:03 GMT -5
That MR design that sumgai noted is a very lucky one, in that it gives you a lot of useful variations with just a 2-pole additional switch. As such, you can use a normal push-pull or mini toggle. Most designs that cover that range in some way use a 4 pole switch to change modes, and we have several on the schematics section, or look at designs by Phostenix via google.
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Post by reTrEaD on Aug 13, 2017 4:18:16 GMT -5
1) You're gonna need to completely start over, that will be easier than trying to keep any of the current wiring in place. We don't know that for certain. It really depends on the present wiring. Just because you see a short and sweet solution for the present pickup selections, does not mean that's the way it is wired. Also, one of the reasons for documenting the present wiring is so the user has a way back to stock if he chooses to do so at a later date. Another reason is to get the threadstarter engaged in the process from the onset. Rather than giving this man a fish, I was setting up for someone having the opportunity to teach him to fish. I was channeling my inner ChrisK. In order to get just one pup (or two adjacent ones) to sound out in a series scheme, the switching is set up to short out (or shunt, if you're of the British persuasion) the remaining undesired pickup(s) While it's possible the three pickups are permanently wired in a full series string and there are two poles of the superswitch being used to shunt as needed from the two series links in the string, that is far from the only possible way this cat may have been skinned. Using the same series string, it would be possible to use one pole to select the 'top' of the desired single or pair and another to select the 'bottom' of the desired single or pair. The unused coil(s) would hang above and/or below the selected coil(s). Yet another (but certainly not the only other) way would be to use one pole of the superswitch attached to the (-) of the middle pickup to facilitate connecting the middle in series with one of the other two pickups. The second and third poles would be connected to ground and hot. No shunting, no hanging. 2) I'm sorry to have to say, you're gonna need more than a simple DPDT switch. In this case, nothing less than a 4PDT will do the job. I did a preliminary workup with only a DPDT, and found a major problem. In series mode, you get the M pup turned on all the time, no matter what position the superswitch might be in. To overcome that limitation, you'll need 4 poles, not just two. Not sure how you might have boxed yourself into that corner, but I can assure you a DPDT is enough to accomplish this task. If any doubt of this remains, I would encourage you to select any one of the three flavors of Stratovarious in the Design Modules section and verify that using three coils, any Version 1~3 is capable of the tasks required here. Note that the fader is not required, it's just an add-on. Excellent choice. While our threadstarter might prefer the simplicity and intuitive nature afforded by having just the seven selections by the plan he had at the onset, the fact that MR's design offers three additional selections does make it very attractive. And it too, uses just a DPDT along with a superswitch.
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Post by sumgai on Aug 13, 2017 10:00:36 GMT -5
I have to admit, I was unaware of Mike's "Ver 2.0", with only a DPDT. I do note however, that one is somewhat forced into a series-and-parallel in Pos 3, which was not the case in his original setup. (Recall that in Pos 3, he first eliminated the Mid pup in favor of B + N, in the 'series' mode.) But that is a strictly a matter of taste, and without further analysis, I'd be willing to bet that the combo could be exchanged for something else more desirable. Not sure, but then again....
Thanks for the heads up.
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