How to get the best tone out of P-90 pickups (2024)

P-90s are easy to modify. Changing the magnets and the pole screws can make a big difference; it’s a lot cheaper than buying new set of pickups and you don’t even need a soldering iron. Although stronger magnets produce higher output, it’s not all about power.

Each grade of Alnico has distinct qualities that contribute to the midrange voicing of a pickup. For instance, Alnico III has a similar midrange quality to low gauss Alnico V, but its tone is sweeter, softer and less aggressive. Alnico II can sound bright andclear, while Alnico IV may have a flat and fairly neutral frequency response.

Full gauss Alnico V will provide brightness, cut and grunt, and it’s well suited to classic rock, heavy blues and punk tones. At the hottest end of the spectrum, Alnico VIII and ceramic magnets will give you the power andaggression you need for heavier rock andmetal styles, but your clean tones may becompromised.

Swapping the magnets involves loosening the two baseplate screws, sliding out the magnets and sliding the new ones in. It’s easier to replace one magnet at a time, and make sure both the south poles are facing the screws. While the pickup will sound the same with the north poles facing inwards, the modified pickup may end up being out ofphase with the stock pickup.

It’s important to note that P-90 magnets can slide out of alignment over time. This shiftrefocuses the magnetic field and it can affect the amount of midrange honk and quackiness. If you fancy a bit more vintage character, try loosening the baseplate slightly and carefully offsetting the magnets. You’ll have to experiment to find the degree of offsetyou like best, and don’t forget to retighten the baseplate screws.

• The history of the P-90, the most versatile pickup ever made

Steel is graded by its carbon content and this is another factor that affects tone. Jon Gundry of Throbak Electronics in Michigan reports vintage pole screws varying from 1006 to 1018. Try 1010 screws for a sweeter and more vintage tone with a softer attack. Toemphasise upper mids, punch and output, go for 1018, 1020 or even 1022.

Thismodification simply involves removing the old screws and screwing the replacementsin. There’s probably no need to take the pickups out of the guitar, but we recommend using an electric screwdriver rather than a manual one to save time. Replacement screwscan be purchased from Sunbear Pickups here in the UK.

For a brighter and more open tone, try plastic rather than metal covers. But if your P-90s sound too aggressive and bright then metal covers might help. Changing thecoversis also a good way to customise thelook of your guitar.

Lastly, the fixing screws for soapbar P-90s were originally brass, but modern equivalentsmay be steel. Steel screws behavelike two extra pole screws and can produce a bit more output and stronger mids.Brass screws may give you a more evenstring-to-string balance.