deathfaces
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Post by deathfaces on Sept 24, 2008 16:43:46 GMT -5
Hello, First time poster, part time listener, I'm hoping someone can help me. I'm planning on wiring a guitar using this diagram so i can use all three pups at one time, and i'd like to wire in a switch so i can switch it to stereo with one jack being a neck/bridge and the other jack being just the middle pup. any help is appreciated, drawing in the answer ecstatically appreciated. thanks in advance.
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Post by warmstrat on Sept 24, 2008 16:57:19 GMT -5
I'm no switching genius but it's looking like you'll need a 3PDT at least to make that happen.
Could (easily) be more, may (but I don't see how) be less.
I suggest you wait a day and let some switch gurus arrive.
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Post by ChrisK on Sept 24, 2008 19:24:26 GMT -5
This can be done with a SPDT switch (SPST if you leave the middle always connected to the secondary jack).
The middle volume pot is currently always connected to the primary jack output signal. You would want to interrupt that point and connect it to the secondary jack output signal instead. You would likely leave the master tone control connected to the primary output jack.
In essence, the middle volume pot is switched between the primary output jack and the secondary output jack.
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Post by newey on Sept 24, 2008 20:00:18 GMT -5
Well, I'm not one of the switch gurus- I'm just the greeter! So, hello and welcome DF! I think warm is right that you'll need at least a 3P switch. My thought would be that your existing pickup selector switch will not accommodate your desires here, and that you'll need to have at least another pole there as well. And, if you have to replace the pickup selector anyway, there ought to be a way to get that all on one switch- perhaps a Rotary? It could be made to look Varitone-ish. But surely you should await the gurus. EDIT: Dallying on my post and missed ChrisK's post above. Fairly straightforward if you eliminate the tone on the middle.
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Post by wolf on Sept 24, 2008 23:10:55 GMT -5
Well if you go to page 3 of my website: www.1728.com/guitar3.htmand scroll down to "3 Pickup Guitar" you'll see 2 switching options for such a guitar. The first diagram is for a "neck / all three / bridge" arrangement and the second is for "neck / middle / bridge". For more tone choices, instead of just one switch, you could use 3 SPST switches wired in parallel to get all 7 possible pickup combinations (or eight if you consider "off" as another guitar tone ) I'll leave it to someone else for suggesting about switching in those stereo jacks.
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deathfaces
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Post by deathfaces on Sept 25, 2008 9:10:53 GMT -5
This can be done with a SPDT switch (SPST if you leave the middle always connected to the secondary jack). The middle volume pot is currently always connected to the primary jack output signal. You would want to interrupt that point and connect it to the secondary jack output signal instead. You would likely leave the master tone control connected to the primary output jack. In essence, the middle volume pot is switched between the primary output jack and the secondary output jack. thanks for the greetings! chrisk, I've spent the night trying to figure out how to wire this and came up nill, the concept makes sense, but i can't figure out where to put the leads. i modified the diagram if you or anyone could fill it in for me. thanks wolf, i've been to your site and like it very much, unfortunately, i've already got a pickup selector switch installed and would like to use that. EDIT: Here's what i came up with while staring at it for awhile. What do you think?
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Post by pete12345 on Sept 25, 2008 16:08:33 GMT -5
One way to do it would be to have a SPDT switch after each volume control, so you can switch any pickup to either jack. Having a center-off position on each switch would allow you to switch the pickup off. It's a bit like using three on/off switches, but expanded to allow for two jacks.
Pete
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Post by ChrisK on Sept 25, 2008 16:29:04 GMT -5
deathfaces, This is what I think your design will do. Right Selector Bridge + NeckLeft_Selector NeckLeft_Jack Neck + Master Tone Right_Jack Neck + Master Tone Left_Selector BothLeft_Jack Neck + Bridge + Master Tone Right_Jack Neck + Bridge + Master Tone Left_Selector BridgeLeft_Jack Bridge + Master Tone Right_Jack Bridge + Master Tone Right Selector Bridge + Middle + NeckLeft_Selector NeckLeft_Jack Neck + Middle + Master Tone Right_Jack Neck + Middle + Master Tone Left_Selector BothLeft_Jack Neck + Middle + Bridge + Master Tone Right_Jack Neck + Middle + Bridge + Master Tone Left_Selector BridgeLeft_Jack Middle + Bridge + Master Tone Right_Jack Middle + Bridge + Master Tone Right Selector MiddleLeft_Selector NeckLeft_Jack Neck Right_Jack Middle + Master Tone Left_Selector BothLeft_Jack Neck + Bridge Right_Jack Middle + Master Tone Left_Selector BridgeLeft_Jack Bridge Right_Jack Middle + Master Tone All in all, a pretty good ordering of things. Kudos. Is this what you intended? If so, you "get it" just fine.
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deathfaces
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Post by deathfaces on Sept 25, 2008 16:50:46 GMT -5
chrisk, AWESOME! that's exactly what i wanted to do. it really opened up my options for being able to use the two jacks in a wide variety of ways. this point is my only worry, is it wise to have two leads coming off one point? otherwise, i think i'm going to go this route. i'm stoked, this has been making my head spin Pete, is this what you meant? an awesome alternative, but seems to offer the same conclusion chrisk is saying my drawing accomplishes, and i only have one switch left. Another question, i've got an sg that doesn't have a grounding on the switch, seems to play fine. i wired another guitar this way by copying the sg and didnt notice the ungrounded switch, and it also sounds fine. is there an advantage or disadvantage to grounding the switch?
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Post by ChrisK on Sept 25, 2008 17:47:31 GMT -5
Why not, aside from some minor abrasions and contusions, the electrons won't hardly even notice. ;D ;D
Don't do this. Whenever any one pickup switch is in the middle (both) position, both jacks will be shorted together. And, your master tone control has evaporated.
Yeah, it grounds the frame of the switch which will prevent any minor capacitively coupled noise injected if you touch the frame of the switch. Other than that, I don't see it as a big thing to do.
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Post by ashcatlt on Sept 25, 2008 22:55:39 GMT -5
Just wanted to mention that at any time when you've got one pickup feeding both outputs (you've got several, according to ChrisK's analysis), that pickup will "see" a lower impedance. If you play around with JohnH's frequency response calculator, or look at this excellent graph (also from JohnH, the top line is 1M, 500K is the 5th from the bottom) you'll notice that this could cause a noticeable (maybe not drastic) loss of the very highest frequencies. Maybe not a big deal if you don't intend to flip the switch while playing, but... Assuming that both jacks are connected to 1M loads, you'll end up with a parallel Z of 500K. That won't be too bad. If one of these is connected to something like a fuzz face an unbuffered wah, or a DI things could go south fast!
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deathfaces
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Post by deathfaces on Sept 26, 2008 11:07:03 GMT -5
will i still lose the higher frequencies if i'm only using one of the jacks at a time? i don't intend to use both jacks all the time, i'm just trying to open up my options. i'm also more of a set it and forget it kind of guy when it comes to the switches, so i wont be flipping around. but, i do use pedals often.
also, will i be losing the high frequenceis only when a pickup is feeding both jacks, so when i've got:
Right Selector Middle Left_Selector Both Left_Jack Neck + Bridge Right_Jack Middle + Master Tone
will i be okay? otherwise i'll probably only be using one of the jacks at a time.
the pups are all around 13 ohms (two super d's and a tonezone)
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Post by ashcatlt on Sept 26, 2008 12:03:46 GMT -5
Kinda depends on what the meaning of "using" is.
It will only be an issue if one (or more pickups) is assigned to both jacks AND both jacks are connected to a load. Doesn't necessarily matter whether you're listening to both jacks.
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deathfaces
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Post by deathfaces on Sept 26, 2008 13:35:12 GMT -5
sorry, when i say using i mean plugged in/connected to a load.
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deathfaces
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Post by deathfaces on Sept 27, 2008 14:59:10 GMT -5
so to confirm, as long as i'm not trying to use the guitar as an ab box i'll be okay with the high frequencies, and if i do try and use the guitar as an ab, i should expect diminished returns. luckily, the way i play is usually pretty bass-centric.
right?
also, wanted to say thanks to everyone so far, his has been awesome help!
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Post by ChrisK on Sept 29, 2008 22:35:26 GMT -5
BTW, you mean 13K or 13,000 Ohms.
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