As part of my series on How Pickups Work here is How To Test Pickup Phase – The Easy Way.

There is, of course, a hard way and that’s putting pickups into a guitar and having a listen later. That’s fine if you get it right first time but a pain if you have to re-wire the pickup again later.

In this video I demonstrate how to use a cheap test meter to identify which phase your pickup is in out of the guitar.

Its a very simple test using an analog (needle type) meter. It’s simply a case of hooking the pickup up to the meter, setting the meter to Milli Amperes and tapping the poles of the pickup with a screwdriver. The needle will “kick” to either the right or left. This indicates the phase.

Traditionally, Gibson style and Fender style pickups are in the opposite phase to each other. This is just how it is. I doubt it was done on purpose, there’s a 50/50 chance.

So it’s really useful to know how to wire your pickups especially if they have an unfamiliar colour code. In my line of work I often repair pickups. I need to send them back to the customer in the correct phase. This is the simple test I use.

Every new pickup I make is tested in this way just to make sure. Especially with humbuckers, if the final signal from the coils is out of phase the output can be tiny.

While on the subject of humbuckers it might be worth watching this video where I explain how humbuckers actually ‘buck’ hum. It’s a bit of a side track but interesting stuff if you’re getting into this whole phase thing.

The most useful application of this test is when wiring or repairing a HSS (a humbucker and 2 single coils) loaded guitar. With a HSS guitar you have to make sure the humbucker is in phase with the single coil pickups. Remember, humbuckers are usually in the opposite phase to single coils.

If it is out of phase you’ll find position 2 of the 5 way switch (bridge and middle pickups combined) sounds very quiet, thin and has an odd ‘quack’. Either bridge or middle pickups will be fine on their own but the phase really matters when they’re on together.

It is surprising how many guitar repair people don’t know about this.

I realized after making this video that I needed to make another on what guitar pickup phase actually is. So here’s a link to that one.

In this second video I demonstrate the sound of pickups out of phase so you can hear the difference which is, of course, the whole point. Although on the whole we try and avoid the sound of pickups out of phase it can be a useful tone in some situations. No sound is bad, just good for different stuff. The most famous example is the famous ‘Greenie’ Les Paul.

There is also a demonstration of the Strat ‘out of phase’ sound and how it isn’t out of phase at all – yeah really! The sound of positions 2 and 4 on a Strat are 2 pickups in parallel. I have no idea how it was ever called out of phase but we seem to be stuck with it.

Thanks for reading How To Test Pickup Phase.