Parallel Axis HSH with auto-split

[dystrust]

I'm working on rebuilding my Charvel Model 2, part of which involves routing it HSH and installing completely new electronics. I've listened to a ton of samples and demos, and I'm thinking that I want a Parallel Axis Distortion for the bridge. With it I'll also be installing a Parallel Axis Neck model and a Parallel Axis Stack for the middle. The rest of this is what I'm not 100% sure about.

I intend to use a 5-way super switch, and I want the following positions to be hum-canceling:
1. Bridge full
2. Bridge inside coil + Middle top coil
3. Middle full
4. Neck outside coil + Middle top coil
5. Neck full

According to the SD FAQ and assuming that Parallel Axis pickups have the same north / south coil orientation, I'll be fine with a regular polarity PATB-2. When I switch to position 2, the inside coil (slug / north coil in a typical humbucker) will be active when splitting via grounding the red/white pair. I should also need a reverse polarity stack because I need the top coil to be south instead of north. What I'm not sure about is the neck pickup. I want position 4 to split to the outside (normally screw coil) of the neck pickup instead of the inside. A typical screw coil is south, so I'd want RP in order for the neck outside coil to hum cancel with the top coil of the RP Stack. At least I think that's what I'd need. If anyone actually knows how to wire this I'd really appreciate a bit of guidance.

Thanks!

 

[Chistopher]

Re: Parallel Axis HSH with auto-split

I think you might be able to just copy this with a wee bit of modifications (I'll post them this evening when I find the time, I need to look at it a little deeper first):



When you finally get it setup and put together, a lot of us would probably be interested in hearing how the PA Stack works out for you, there isn't much info about it on the web.

 

[dystrust]

Re: Parallel Axis HSH with auto-split

I was planning to use this diagram for the most part. I'm pretty sure I'd need a RP middle, so I'd swap black / red and green / white on the middle pickup. I'm not 100% sure on the RP neck, so I may just order a standard polarity neck and flip the wiring / magnet if it becomes necessary.

 

[dystrust]

Re: Parallel Axis HSH with auto-split

Bueller? Bueller??

 

[Chistopher]

Re: Parallel Axis HSH with auto-split

Your diagram should work perfectly.

 

[dystrust]

Re: Parallel Axis HSH with auto-split

I was planning to use this diagram for the most part. I'm pretty sure I'd need a RP middle, so I'd swap black / red and green / white on the middle pickup. I'm not 100% sure on the RP neck, so I may just order a standard polarity neck and flip the wiring / magnet if it becomes necessary.

Bumping this in case someone finds it via search later. I decided to go with a slightly different switching combination:

1. Bridge full
2. Bridge inside coil (N) + Middle top coil (S)
3. Middle full
4. Neck inside coil (N) + Middle top coil (S)
5. Neck full

I don't need a RP Parallel Axis Stack because the top coil is south, just like other SD single coils. I do need to reverse the wires on the middle in order to cancel hum when used in combination with the "slug" coil of either the bridge or neck.

TL;DR: The top coil of a Parallel Axis Stack is south, so I can follow the diagram exactly and achieve hum canceling auto-split in positions 2 & 4.