I recently had this ‘63 Jazzmaster pickup in for a re-wind and thought I’d take the opportunity to talk about what gives them such a unique sound.
What gives a Jazzmaster that smooth, full ring? The simple answer is ‘coil geometry’.
As you can see it’s a very thin pickup. That means that less of the winding is close to the magnet.
A Strat is a much taller pickup, the windings are closer to the magnets and so has a more immediate, snappy tone. You could say a Strat is more efficient.
The gauge of wire and number of turns is very similar to a Strat but this geometry makes all the difference. The further away from the magnet a winding gets the less treble and the less response.
And to accommodate enough wire in such a thin pickup it needs to be wide.