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Post by jhng on Jul 27, 2006 9:38:04 GMT -5
This is essentially a modded mod. It is a development of John Atchley's S-Tastic mod, adding three push/pulls, that also allows the Middle pickup to be added in series, and out of phase. Essentially: The fiveway acts just like the S-Tastic giving N, N+B, NxB, NxB(oop), and B. The volume pot push pull switches on the Middle pickup in parallel. The first tone pot switches on the Middle pickup in series. When both switches are activated you have the Middle pickup alone. The second tone pot is a phase switch for the Middle pickup. The first tone is the main N/B tone control. The second tone control is only active when the Middle pickup is selected in series or when the Middle pickup is selected alone. It only operates on the Middle pickup and so allows you to get "half-series" sounds. This wiring allows you to get: All the parallel combinations, All the series combinations, All series OOP combinations, Some parallel OOP combinations, Some hybrid series/parallel combinations. Without changing the stock appearance!! Eljib has implemented this and found it very useful. He did it using push/push switches and, I believe, found this very convenient as he could switch all three push/push switches simultaneously with one hand. I hope it is of interest. The diagram is, obviously, hacked from JohnA's diagram rather than my usual schematic form. Hastings
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Post by sumgai on Jul 27, 2006 15:57:33 GMT -5
Hastings,
[glow=red,2,100]Perfect![/glow] Get's my squeal of approval, no doubt about that. What I especially like is the way you avoided the shunting of pups in series, which usually kills all output. Very nicely done.
+1, well earned!
sumgai
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Post by CheshireCat on Jul 28, 2006 0:11:30 GMT -5
He did it using push/push switches and, I believe, found this very convenient as he could switch all three push/push switches simultaneously with one hand. Come again!?! What, S-1 Switches!?! DPDT push/push pots!?!
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Post by jhng on Jul 28, 2006 4:42:54 GMT -5
Sumgai - Thanks!!
The mod actually came out of discussions with eljib, so credit to him too. BTW, You will notice that the arrangement for the Middle pickup bears a striking resemblance to the local series/split/parallel setup I used in the improved JP mod. The phrase "one trick pony" springs to mind... But it is a particularly useful trick when designing mods!
Chesh - Push/push pots, with DPDT switches, do indeed exist. Have a peek at the Allparts catalogue.
Hastings
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Post by CheshireCat on Jul 28, 2006 10:44:26 GMT -5
Chesh - Push/push pots, with DPDT switches, do indeed exist. Have a peek at the Allparts catalogue. Oh, yeah, those. Duh! The funny thing is that I actually have one! (That very one, in fact.) I had ordered one of those last year. I was even working with it several months ago, but since then I've been totally consumed with everything else and totally forgot about it. ;D Brilliant job ringing those in on the expanded mod. Cool move! Chesh
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minions
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Post by minions on Nov 2, 2009 12:46:49 GMT -5
Does the "SG" symbol in this diagram mean ground?
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Post by newey on Nov 2, 2009 15:18:56 GMT -5
Yes- "Signal Ground", as opposed to the string/shielding ground, which may or may not be the same , depending on whether you are shielding the guitar or not.
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Post by sumgai on Nov 4, 2009 1:06:26 GMT -5
minions, You don't know it, but you just set a record of how long a thread languishes before being updated - 40 months!!! Bring on the merrymakers, and let the celebation begin! ;D You picked a good circuit to build. Do keep notes and take pics along the way, and post 'em in The Gallery when you're done. Or you can post as you complete each step, like flateric does, that's also good. sumgai
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minions
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Post by minions on Nov 5, 2009 11:04:05 GMT -5
Haha wow I didn't realize it had been 40 months ;D
Where would I get capacitors with those values? I can't find them anywhere.
If I were to use capacitors with slightly different values, would there be a difference?
Thanks again.
Oh and yeah I will definitely take notes and pictures. I just ordered my guitar and parts from Warmoth and other sites yesterday, so it will be a little while before I can start.
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Post by sumgai on Nov 6, 2009 1:31:19 GMT -5
minions, 0.01µf and 0.033µf are both common as apples, but the 0.054µf is not. This whole idea took place persuant to another discussion (sadly, now lost to the search engine due to age), but you can achieve the desired value by combining capacitors in parallel. A 0.033µf and a 0.022µf will add up to 0.055µf, and that's close enough. However, I must caution you that this a very drastic value, and you may not like it - it's almighty dark, when the control is turned down even a little. I suggest that you be prepared to do some experimenting, before you button 'er up and call it a day. HTH sumgai
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minions
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Post by minions on Nov 21, 2009 9:05:33 GMT -5
So here is what I am planning to build: That's a Seymour Duncan P-Rails in the bridge. The two SPDT switches work like this: 2(BC) + 1(DE) = Rail Coil 1(AB) + 2(EF) = P-90 Coil 1(AB) + 1(DE) = Both Coils in Parallel 2(BC) + 2(EF) = Both Coils in Series More info here. I will also replace the .054uf capacitor with a .033uf and a .022 uf in parallel as suggested by sumgai.
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