PowerShifter™ EX

Including POWERSHIFTER GT

A Fender Stratocaster Supercharger Circuit from Gombrelli Guitars USA

Overview

Power Shifter EX and GT are updated versions of the popular Powershifter circuits with added features.

• DUAL STRATBUCKER – A single switch action that turns an SSS Stratocaster into a HSH Stratocaster
• SUPER SPANK – Which parallelizes the neck and bridge pickups.
•  On EX Version (Plus all the features of the Powershifter)
  • TREBLE BLEED – Maintain treble response on volume reduction. Add
  • DUAL CAPACITORS
  • CENTER SPEEDWAY
• ON GT VERSION (plus all features of the EX version)
  • BASSTAMER (only on the GT)
  • SUPER SWITCH for maintaining positions 2 and 4 when the Dual Stratbucker is on (they stay in parallel)
  • DOUBLE CAP SWITCHING for the DUAL Stratbucker  (.022uf when in stock mode, .010uf when in Dual Stratbucker mode)

Many of these concepts are not new to the world of wiring guitars, but like a lot of things, it’s in the engineering; it’s HOW you design and implement the package that really makes things rock!

Design Requirements

Some of the requirements I look for is:

• Always allow a Stratocaster to be able to run with Stock Switching
• Make it EASY to switch use while playing live
• Make it EASY to understand what sound it will make before you switch it
• Make it flexible in terms of ways it can be implemented
• Let there be NO dead spots in the switching
• Allow multiple ways to achieve sounds or even to mix features together.
• Maintain the ability to have 2 tone controls or a Bass/Treble feature.

Implementation options:

• Two Micro Switches
• One Micro Switch and One Push Pull
• Two Push Pull Switches
• 2 Push Push Switches (The quality of the switch is a little less)

The other changes are under the hood, for example, the super switch in the GT version.

Tone:

The default cap selection can be changed when doing a custom orders.but the default is .022uf and .010uf

Any pot value will work but usually larger (500k) pots are used for higher winding pickups to do more treble compensation with 250K being the standard otherwise.