September Mod Of The Month: Phase Reverse and Blender

For September, we’re discussing a pretty cool trick that utilizes a Blender Pot and a Push Pull Pot. We’re going to utilize the Push Pull Tone Pot as a Phase Reverse switch – to reverse the phase of one of your pickups. Next, we’ll use the Blender Pot to blend between in-phase and out-of-phase tones. With this mod, you’ll be able to achieve all sorts of tones, from full-on out-of-phase to only slightly out-of-phase.

What You’ll Need:

  1. 250K / 500K Push – Pull Pot
  2. Blender Pot
  3. Pickups with 2-Conductor With Shield Lead

The Mod:

We’ll have to break this modification up into a few different parts to explain it, as each guitar is a little different. First up, the Push / Pull Switch. This mod will reverse the phase of one of your pickups:

Lindy Fralin Phase Reverse


Wire your out of phase pickup (could be neck or bridge, doesn’t matter) into this Push Pull Tone Control. Wire the other pickup to the switch, which we’ll get to in a minute. As stated earlier, you’ll need 2-Conductor Lead for this installation to work. This allows you to Ground the metal (Shield) and flip the coil direction (White and Black). To ground out the metal, you can solder the shielding to the casing of the pot.

How it works:

Your signal is coming in to lugs B & E (common) of the push pull pot. When pushed down, White is connects to White, which goes to the switch, and Black is going to ground. This is the normal operation. When pulled up, White is now connected to Black (going to ground) and Black is now connected to the switch. As a result, your pickups are now out of phase now that your coil direction is reversed. Now, on to the Blender pot and Switch:

The Switch & Blender Pot:

Fralin Pickups Blender Pot Wiring With 3-Way Switch


For this installation (the guitar in the video above), we’re using a 3-Way switch, although any switch will work. The Bridge pickup is wired direct to the switch, and the Neck pickup is going to the Push Pull pot, above before coming to the switch. The Blender Pot is being wired into the first lugs on each side (follow the arrows to make this work). After you have it all wired up, the rest is wired just like a normal Strat – you’ll have a Master Volume, a Master Tone, and a Blender!

Wait, I have a Les Paul!

We got you. Check out the below diagram to see how to wire this up. Since the pickups normally go to their respective volume pots first, A few things are important to note:

  1. We didn’t want to clutter the diagram with ground connections, so make sure your ground connections are all correct.
  2. This time, you’re going straight to the Blender rather than the switch from the Push-Pull Phase Switch.
  3. You can either leave your other tone knob out of the circuit, or do something else with it. This guitar utilizes a Master Volume, a Master Tone and a Blender.
Phase Reverse Mod Les Paul

How to Use It:

You’ll have your standard pickup tones, and use of a Blender to get all the tone in-between. Pulling up on the switch will put the Neck pickup out of phase with the bridge pickup. You’ll be able to hear this in position 2, when both pickups are on at once. Using the Blender won’t do anything on Position 2, but choose either the Neck or Bridge and you’ll be able to sweep the in-phase (or out of phase) pickup in and out and get the whole variety of tones!

Written By:

Tyler Delsack

👋 I'm Tyler Delsack, the Manager of Fralin Pickups. I've been a guitarist for 26 years, and along with managing the shop and working on this Website, I love tinkering with things!

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