To add a switchable speaker output jack to a combo amp that will let you use it as either a combo or a head, simply remove the back of the amp, drill the holes necessary in it for the switch and jack, cut the two wires running to the speaker, and wire it as shown in the diagram below. Parts Required: DPDT toggle switch, 1/4" jack, and speaker wire Skill Level: Basic Time: About an hour
A no-load pot has several cool uses in guitar wiring. For one, it can replace a standard tone pot. Typical tone controls still have an effect, even when turned all the way up, but a no-load pot will essentially take the tone control out of the circuit, when turned up to 10. You can also use one as a blend pot to blend pickups into each other. You can buy a no-load pot, or you can make one out of a regular pot. Here's how I turned a standard CTS pot into a no-load pot to use as a blender. Tools you need: Tiny flathead screwdriver, or something similar Needle-nose pliers Xacto knife Steps: Start taking apart the pot by using the screwdriver to pry up the four tabs circled in red in the picture below. Then use the needle-nose pliers to bend them back. Don't bend them too far, or they might break - just bend them enough so that they're about straight. It should look something like this: Next, take the threaded shaft off. Then take off