Which Duncans Are The Same Pickup But With Different Magnets?
My understanding (which is less compressive by far than others' here) is that the wind pattern would have an effect on capacitance and inductance; I'd assume that tension overall would be reflected in resistance, and if you wanted to get really anal measurements of the physical dimensions of the wind could be taken into account...
It'd be impractical, basically my point.
Not really. The self capacitance of the pickup is pretty low. The cable between your guitar and amp (or pedals) is much higher, and negates the pickup's self capacitance.
Winding pattern is another area where I think there's a lot of myths involved. For example "scatter winding" is often said to either make the pickup brighter, by moving each turn farther away from the prior turn, lowering both self capacitance and mutual inductance, or makes the pickup fatter, by making the coil larger. Which is it? You definitely apply more wire per turn. More wire makes equals less highs and more lows or mids, depending on the wire gauge.
If you hand wind you can never get a perfectly uniform coil. There's always a fairly high degree of randomness. So if the winding pattern mattered, and every hand wound coil is different (more so as you increase scatter), shouldn't every pickup sound different? Yet they don't. As long as you stick to the formula you are using, they all sound the same.
What does matter is how many turns of wire (not the resistance) on the coil. So you can get slight variations that way. So if you look at the various PAF type pickups on the market, even from the same maker, they all vary slightly in how much wire is wound on them, as can be determined by the DC resistance readings.
Add to that the magnet type, offset on coils, pole and keeper alloy, and bobbin geometry - Although for replacement pickups the bobbins are usually pretty much the same.
Inductance is a product of the turns on the coil, metal parts, and magnet type (AlNiCo being higher than ceramic since it contains iron. Ceramic has the inductance of an air coil).
Sent from my iPhone using Tapatalk