Effects Loop Switch Boxes

Here are three different switching boxes to switch effects loops into your signal chain (usually between your guitar and amp). The first one is a single effects loop switch.  The other two switch boxes are for using two effects loops. All these circuits are passive except for the LED indicators to indicate if the loop is engaged or not.

• Effects Loop Projects Revisions History

Single Effects Loop Switch Box

This is a simple effects loop switch box. This is sometimes called a “true bypass box” since it can be used to switch in/out an unruly old non-true-bypass vintage stompbox to make it “true bypass”. There is example diagrams of how you can use this box below, at the end of the page. This switch box can allow for a clean signal straight to your amp, completely bypassing your pedal board.  Another useful aspect is that it can be used to switch on several effects with just one click of a switch.

• General Build Instructions
• Loop Switch Box User Manual
• Loop Switch Box Build Instructions
• Loop Switch Box Bill of Materials Text
• Loop Switch Box Schematic
• Loop Switch Box Parts Layout and Wiring Diagram
• Loop Switch Box With Buffer Loop Input Parts Layout and Wiring Diagram Uses the Single Buffer PCB/Kit
• Loop Switch Box With Buffer for the Loop and Output Parts Layout and Wiring Diagram Uses the Single Buffer PCB/Kit

Dual Effects Loop Switch Boxes

We are presenting 3 different Dual Loop switch boxes here. The first is where the two switches activate or bypass each loop independent of the other loop, so you can choose either loop to be on or both loops on or both loops bypassed. The later two will toggle between the two loops with one click of the switch. There is no provision for both loops to be on at the same time.  These are to be used if you have two loops of effects that will never be active at the same time and you want to switch quickly (one press of the foot switch) from one to the other.

Dual Effects Loop Switch Box

Dual effects loop switch box that allows you to true-bypass switch on or off two separate effects loops.  Note that the switching between loops is devised so that the input of the unused loop is shunted to ground.  This will prevent noise from the unused loop with an open input.

• Dual Loop Switch Box User Manual
• Dual Loop Switch Box Bill of Materials Text
• Dual Loop Switch Box Schematic
• Dual Loop Switch Box Parts Layout and Wiring Diagram
• Dual Loop Switch Box with Buffered Loop Inputs Parts Layout and Wiring Diagram Uses the Dual Buffer Kit/PCB
• Dual Loop Switch Box with Booster Loop Inputs Parts Layout and Wiring Diagram Uses the Dual Booster Kit/PCB

Dual Effects Loop Switch Box (Toggle)

Here is a dual effects loop switch box. Switch between two different effects loops. An excellent solution for switching between two completely different sounds with one switch click.  Note that the switching between loops is devised so that the input of the unused loop is shunted to ground.  This helps prevent noise when there is a high gain pedal in the loop.

• Dual Loop Toggle Switch Box Bill of Materials Text
• Dual Loop Toggle Switch Box Schematic
• Dual Loop Toggle Switch Box Parts Layout and Wiring Diagram

Dual Effects Loop Switch Box (Toggle) with Bypass

Another dual effects loop switch box that allows you to switch between two different effects loops or bypass them both.

• Dual Loop Toggle Switch Box (with bypass) Bill of Materials Text
• Dual Loop Toggle Switch Box (with bypass) Schematic
• Dual Loop Toggle Switch Box (with bypass) Parts Layout and Wiring Diagram

Buy a Effects Loop Switch Box (One Loop)

Buy a Single Loop Switch Box Complete Kit. Includes all the parts and materials you need to build one, all for about the price you would pay for the parts.

Buy a Dual Effects Loop Switch Box

Buy a Dual Loop Switch Box Complete Kit. Includes all the parts and materials you need to build one, all for about the price you would pay for the parts.

 

Effects Loop Switch Box Application Diagrams

Here is a diagram example showing the use of the Effects Loop Switch Box. The box is used to switch in or out a “loop” of guitar effect pedals. Very useful in may rigs.  Especially useful if you want to switch on several effects with one press of a foot switch.  

Here is a diagram example showing the use of the Dual Effects Loop Switch Box.