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Silencing pole-pieces on Humbucker?

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  • Silencing pole-pieces on Humbucker?

    Hi all,

    This is not a question about pickup making per se, but instead about how pickups work and how to modify them. I want to know if there is any straightforward way of getting a regular 6 string humbucker to capture fewer strings than normal, without radically transforming the pickups' tone when it comes to the strings that it does capture.

    E.g.

    For a humbucker mean to capture 6 strings

    E-A-D-G-B-E

    To only capture the 4 treble strings

    x-x-D-G-B-E


    The techniques that come to my mind (not knowing very much about pickup constructions) are:

    1. Removing the screws and slugs that stand under the strings I don't want to capture.
    2. Using a much shorter bar magnet - one that only covers the area of the 4 strings I want to capture.

    Might either of these techniques work? If not, what else would you recommend?

    (I'm aware that other options would be to get pickups that are only meant to capture 4 strings in the first place, or to offset the pickup's positionon the guitar such that it stands under only 4 of the strings. But before committing to any solution I want to have a more thorough understanding of what my options.

    If it helps, what I'm looking to do is to convert a standard 7 string, 30 inch scale guitar into a budget hybrid bass/guitar a la charlie hunter. For that purpose I need the bottom three strings and the top four strings to be captured independently - in a stereo setup - so that the bass side signal can be sent through a bass rig, and the guitar side through a guitar rig. Being able to use modified 6 string humbuckers, rather than specialised 4 string pickups would really expand my options when it comes to achieving the kind of sound I'm looking for at minimal cost.)

    Thanks much!

  • #2
    O-R,

    You are certainly on the right track and have pretty much answered your question. If you really don't want to change the sound at all then shortening the magnet is the better way as removing the slugs and screw under those two strings will undoubtedly change the inductance and may move the resonant frequency. Shortening an alnico magnet isn't going to be fun or easy. I'd tackle it with a dremel tool and an abrasive cutoff disc. Score both sides and snap the magnet off in a vise then clean up the rough end on a grinder. Don't breathe cobalt dust as it's supposed to be bad for you. You probably need to shorten the keeper on the screw side as well but someone who builds humbuckers would be in a better position to tell you all the fine points.

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