Re: when I use a meter with a pickup... what does it mean? what am i doing?
- From: "RD Jones" <annonn@xxxxxxxx>
- Date: 31 Dec 2005 12:43:45 -0800
A Fourforty wrote:
> vader wrote:
> > higher read, higher output? more brittle? whatever?
> > if it's resistance what I'm measuring... what does it .... anything?
> >
> > lost
> >
>
> The impedance of a pickup is measured in inductive reactance, not
> straight resistive ohms. Measuring it with an ohm meter won't tell you
> much of anything. It's like measuring a speaker: you'll read a short
> instead of the most common 8 ohms. That's because speaker voice coils
> are also measured in inductive reactance.
This response is at the very least misleading.
All passive electrical components can be "modeled" as
varying amounts of resistance, inductance, and capacitance.
Even if there's such a low amount of resistance that the meter
seems to indicate 0 ohms there will still be some small bit
of resistance. A guitar pickup is both resistive and inductive.
Generally a higher resistance reading means there's more
wire in there. The inductance will be determined by various
factors like how much metal is used, how tightly the wire is
wrapped around it, and the magnetic properties of the metal
and magnet(s). The sound is determined by these, plus how
the magnetic field is focused in the place where the strings
are.
More windings - higher output, lower resonant freq peak.
rd
.
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