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  1. My method for partial demagnetization is to use...

    My method for partial demagnetization is to use another AlNiCo 5 pole piece as a foil. If you press two AlNiCo magnets together, face to face, they will mutually and partially demagnetize, so you can...
  2. You don't have to have the stack of neo bottons...

    You don't have to have the stack of neo bottons that long, since the neo's have no permeability of their own, their strength diminishes with distance as though each preceding button was empty space,...
  3. An interesting thing about that is that while...

    An interesting thing about that is that while pole pieces in Strat and Tele pickups, and PAF style AlNiCo bars have a face width to length ratio of 1/4 to 1/5, there are a number of pickups with...
  4. A lot of advice on the internet shows people...

    A lot of advice on the internet shows people passing the pickup or AlNiCo in between neodymiums, but as Helmholtz says, the return path is strong enough to demagnetize the AlNiCo, which means two...
  5. You mentioned acquiring higher carbon screws and...

    You mentioned acquiring higher carbon screws and hoping they look the same, but supposing you can get some identical electrical steel screws to experiment with, you could use a dremel with a grinding...
  6. This seems like a strange objective, because...

    This seems like a strange objective, because reducing the permeability reduces the effectiveness of the screw pole piece in general. Suppose you're doing this to reduce the inductance, you will also...
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    The walled, ferrous base plate probably increases...

    The walled, ferrous base plate probably increases the inductance by a good fraction. But I would bet that the eddy current attenuation caused by both the cover and the metal base probably have a lot...
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    Do you have a way to measure the inductance?

    Do you have a way to measure the inductance?
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    It might be easier to just buy six new screws...

    It might be easier to just buy six new screws rather than try to match one with the rest. And if they're too long you can just cut them.

    Someone is selling a newer HiLotron for $70,...
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    For good measure, try putting a nown working pole...

    For good measure, try putting a nown working pole piece in the same spot and make sure it works. Its not too likely, but the bar magnet might be weak in that spot.
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    If you have a change of heart, it looks like...

    If you have a change of heart, it looks like there are some turn key products for mixing piezo and magnet pickups on board http://bartolini.net/product/mpb2/ . I really like the idea myself. If I...
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    Well that's good, because $1 spent on this patent...

    Well that's good, because $1 spent on this patent is $1 too much.
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    The two different gauges of wire for the same...

    The two different gauges of wire for the same number of turns? Yes https://patents.google.com/patent/US4501185A/en .
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    I'm not sure about that. One interesting thing...

    I'm not sure about that. One interesting thing though is that if you short the secondary, as is the case in situ, you will see that dip very pronounced, as though it were (is?) a major cause of eddy...
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    I don't know exactly the cause, but it's related...

    I don't know exactly the cause, but it's related to coupling with the adjacent coil, because if I remove that other coil from the pickup housing, a different plot emerges with a single resonant peak,...
  16. Thread: Old Lawrence

    by Antigua
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    Check this out...

    Check this out https://www.youtube.com/watch?v=OiPe6f4Oh8E
  17. Thread: Old Lawrence

    by Antigua
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    Is it encased in epoxy?

    Is it encased in epoxy?
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    This is the info I gathered from one I have on...

    This is the info I gathered from one I have on hand

    DiMarzio Humbucker From Hell DP156BC

    Series resistance: 5.96k ohms
    green & white: 2.507k ohms
    black & red: 3.432k ohms

    Series...
  19. The LCR meter has to be able to test above 100kHz...

    The LCR meter has to be able to test above 100kHz (and set to "PAR" more) to get a reasonable capacitance reading. The DE-5000 can do it, I'd recommend it over an Extech, both because it's cheaper...
  20. Have you solely relied upon your sense of hearing...

    Have you solely relied upon your sense of hearing to confirm the phenomena you describe?
  21. These are just assertions. I'm not sure how those...

    These are just assertions. I'm not sure how those small hysteresis loops are supposed to produce harmonics, and even if they do, how loud are they? Could you even hear them? If everything were...
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    This forum is really sketchy, sometimes I wonder...

    This forum is really sketchy, sometimes I wonder if it will go away and never come back. If that happens... I wish you all the best in your future endeavors.

    Have you directly A/B'd them with...
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    Brass covers, maybe? Maybe if you post pics, some...

    Brass covers, maybe? Maybe if you post pics, some clue will present itself.
  24. I've tested both the magnetic and electrical...

    I've tested both the magnetic and electrical properties of a few dozen AlNiCo 2 magnets that came with pickups sourced from all over the place, I've never seen much variation. There is room for...
  25. Yeah there is some truth, but then you have the...

    Yeah there is some truth, but then you have the remainder, which is not truth.
  26. Here's a comparison plot I made, you can see how...

    Here's a comparison plot I made, you can see how AlNiCo and steel compare to air core, in a plastic bobbin Strat pickup:

    50103

    Note how AlNiCo 5 has a higher Q and yields a higher peak...
  27. I measured the values of Alumitones...

    I measured the values of Alumitones http://guitarnuts2.proboards.com/thread/7821/lace-alumitone-analysis-review , it does have an unusual bode plot compared to other pickups.
  28. Yes,...

    Yes, http://guitarnuts2.proboards.com/thread/7913/magnetic-pull-pickup-string?page=2 and http://guitarnuts2.proboards.com/thread/7998/tonal-effect-pickup-height?page=1&scrollTo=82326

    Looking...
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