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Another phasing question

4/12/2005 6:15 AM
Dave	Another phasing question I was wondering if any of you guys could explain what happens when you run a humbucker in parallel with the middle single coil (i.e. positions 2 + 4 on a standard 5 way with an H-S-H guitar). I recently installed my first handwound humbucker efforts into my Ibanez RG570, into which I've also just added two DPDT on-on-on switches in order to wire the humbuckers for series/coil cut/parallel use. Because it's a 24 fret guitar, I'm coil cutting on the adjustable pole side (closest to neck on neck humbucker and closest to bridge on bridge humbucker). I had to flip the magnets round to make the adjustable coil's magnetic polarity north to work without phasing problems with the middle single coil. It all works beautifully and it's transformed a previously fairly generic sounding guitar into a great sounding guitar. What I'm puzzled about is what happens phasing-wise when you use positions 2 or 4 when the humbucker is in parallel or series humbucking mode? In coil cut mode both the electrical and magentic polarity is reversed between the coils in question, but when both humbucker coils are in use, what happens? I can't discern any phasing problems but my gut instinct tells me that there must be some, as there's 3 coils in use. Is this correct? Cheers, Dave

4/12/2005 6:15 AM

Dave

Another phasing question

I was wondering if any of you guys could explain what happens when you run a humbucker in parallel with the middle single coil (i.e. positions 2 + 4 on a standard 5 way with an H-S-H guitar).

I recently installed my first handwound humbucker efforts into my Ibanez RG570, into which I've also just added two DPDT on-on-on switches in order to wire the humbuckers for series/coil cut/parallel use. Because it's a 24 fret guitar, I'm coil cutting on the adjustable pole side (closest to neck on neck humbucker and closest to bridge on bridge humbucker). I had to flip the magnets round to make the adjustable coil's magnetic polarity north to work without phasing problems with the middle single coil. It all works beautifully and it's transformed a previously fairly generic sounding guitar into a great sounding guitar.

What I'm puzzled about is what happens phasing-wise when you use positions 2 or 4 when the humbucker is in parallel or series humbucking mode? In coil cut mode both the electrical and magentic polarity is reversed between the coils in question, but when both humbucker coils are in use, what happens? I can't discern any phasing problems but my gut instinct tells me that there must be some, as there's 3 coils in use.

Is this correct?

Cheers,

Dave

Replies:

Dwight Listmayer Jeez Dave ... what a great question... -- 4/12/2005 8:55 AM
Steve A. Phase Test from "Guitar Electronics" -- 4/13/2005 6:55 PM