variation of Troy Van Leeuwens Yamaha wiring

[fergus]

Hi All, I've posted this on my regular guitar building forums with no luck then I heard this was the place for this sort of thing ;D

my current build is a Jazzmaster copy :maple neck, Rosewood FB, sapele body, recessed TOM, LP style pearl block inlays, CBS headstock. black beauty colour scheme: black finish and pickguard, all gold hardware and pups.

I wanted to try controls like Troy Lan Leeuwen's yamaha (anyone played one?) which is:

3xp90
3xvol
master tone
1st toggle: bridge/bridge+neck/neck
2nd toggle:middle off/add middle/middle pup only(turns other pups off)

except a master vol instead of 3 individuals.
I also have some DPDT on/on slide switches which im going to put in to add to the jazzmaster look. ATM I plan on one turning the neck on/off for Morello style stuttering (with the1st toggle, not the slide) and the other for mid phase reversal but I'm sure there would be better uses for these?

BY my calculation a normal LP toggle wont do the 2nd toggles function and i need one of these 3 pup LP switches:



hopefully this is how i want to wire it?
(1st toggles in the centre, 2nd toggles on left, other switches are slide switches.)


excuse the amateur paint mash up

[fergus]

Also, the pup i planned on using in the middle is 2core+shield so the phase reversal should work fine, which brings me to my next dilemma:

I have a Kent Armstong alnico vintage (around 8k) and a matched pair of SD's SP90-2's (ceramic, around 11k and 14k)I brought on a whim off Ebay before the 3pup idea came along.

i plan on putting the KA in the middle as it has the 2c+shield and then the matched pair would be in the most used positions, but the output mismatching will probably mean the mid will be too quiet on its own

[newey]

fergus-

Hello and welcome! Somone will be along to check your diagram, (although it looked ok to me at first blush).

i need one of these 3 pup LP switches:

Yes. That much I can tell you.

The potential mismatch of the middle pup could be solved by using a blend control or by giving the mid its own volume control- but I gather that you don't want to add additional pots to the design.

[ChrisK]

By my calculation a normal LP toggle won't do the 2nd toggle function and I need one of these 3 pup LP switches:

Au contraire' Pierre.

Recalculate.

The LP switch is a SP3T center ON in that it does the one/both/other function.

The first LP switch does this for the bridge and neck group realizing bridge/bridge+neck/neck.

The second LP switch does this for the above group and middle realizing group/group+middle/middle.

The first LP switch is a subset switching function feeding into the second switch.


Only standard, regular, boring, pedestrian, run-of-the-mill LP switches are needed.

The rest of the functions that you discuss are straightforward since....sub-modules are!

..controls like Troy Lan Leeuwen's Yamaha...

If you're going to play "stump the GN2 board", you'll have to try much harder!

[fergus]

Ha! of course ChrisK ;D
I was working under the assumption I needed to ground the unused group/pup which only the 3 pup LP toggle did.
not sure why I thought that, grounding unused pups has never crossed my mind before

newey: I thought about having just the N/B+N/B toggle and a Vol to blend in the middle pup but I rely too much on a single master vol, where a single twist will clean up my tone or give silence.

The DPDT for 'neck off' was a spur of the moment 'what can this switch do for me', in hindsight I cant see myself using it, but after looking around for other wiring options the wealth of options has left me stumped any suggestions?

Cheers

[ChrisK]

This ought to get you into a whole bunch of trouble.... ;D ;D

Add Pickup and Modes for an HHH LP

Some of these switches can be toggles.

[fergus]

jeez, thanks for narrowing things down for me ;D

I think series/parallel for the mid pup would be of some use to me.

but after looking at that HHH LP schem. and the sub modules and trying to adapt it for what i want it has me stumped



Any help would be much appreciated

[pete12345]

There ya go. The 'A's connect together. For this to work properly, the lower switch must be in 'middle' or 'both'. When 'Neck/Bridge group only' is selected, there will be no output in series mode. Parallel mode works as before, series mode puts the middle in series with whatever is selected out of neck and bridge. In the 'both' position, you get the interesting (Neck+Bridge)xMiddle

[fergus]

ahhhh, thank you very much
And I can still do toggle switch staccato ;D

Now all I have to do is finish building the guitar to put it all in
I'll be sure to post pics and some words on how intuitive/functional it all turns out

[pete12345]

Here's a slightly improved version that eliminates the dead spot of the other one. Here, the middle pickup is always on in series mode (the lower switch has no effect) with the other switch selecting neck/neck+bridge/bridge in series with it. Parallel mode is as before.

[ChrisK]

Here is a variation from the same era that was the precursor of the HHH design.

It does similar things, but uses master volume and tone controls.

Note that it does this with two DPDT push pull pots in lieu of one DPDT and a second LP 3-way.

Add Pickup and Modes to HH Three-way

Note that this would fit nicely within the single 3-way and two DPDT slide switch Jazzmaster paradigm.


Phasing is not addressed since that is just a sub-module between the middle pickup and the switching scheme.