Saturday, February 10, 2024

OFF-BOARD WIRING: Dual Effect Pedals, FX Insert Wiring

I have a couple of dual pedals planned, so time to jot down some off-board wiring plans.  

SWITCHED JACKS

First off, I probably should touch on switched jacks - I'll stick to the Cliff style, as these are the most common type used for guitar pedals.   

Switched jacks are great, as much as I like a solid metal Switchcraft input jack, the Cliff style switched jack is very reliable and has additional benefits.   Apart from the switching, I find them much easier to work on in an enclosure compared to a regular jack.  The jack is also completely isolated from the enclosure, so you can choose how and where to shield the enclosure (or not).

As the diagram below shows, one side of the terminals is switched - the switching is activated by plugging a jack in.  It's very simple really, when the jack is plugged in, it physically forces the connection between the two sets of terminals to lift, breaking the connection between the two sides.  Unplug the jack, and the terminals go back to their original position and reconnect.

guitar effects pedal switched cliff style jacks diagram


DUAL PEDAL OFF-BOARD WIRING - THE MOST BASIC OPTION

The most basic option involving more than one switch - fixed order, in one side, out the other.  Works well if you know that there will never be any need for more change, or maybe you just don't have room in the enclosure. 

guitar fx dual pedal off-board wiring diagram



Same again, with a master on/off switch - which is quite a useful addition in many cases.

guitar effect pedal dual off-board wiring with master on/off switch

DUAL PEDAL,  SIMPLE ROUTING (NORMALLING)

Each pedal is individually switched on and off, without a master switch.  Effect 1 routed directly into effect 2 by default.  Effect 2 input breaks the link from effect 1 out (by plugging a jack in), allowing full use of each circuits input and out jacks - basically two separate pedals in one box.  This method is the same as patch bay normalling.


guitar effect pedal dual off-board wiring with simple routing


DUAL PEDAL,  CIRCUIT ROUTING SWITCH

This is a little more interesting - dual pedal with a switch to change the order.  This could be done with a standard 3DPT stomp switch or a 3DPT toggle.  I can't really see myself swapping the order of the circuits on the fly, so personally I'd use a toggle.  The toggle can also be labelled, so it's clear what the routing is - a 4PDT is required if you wanted an LED, which starts getting a bit much in my book.

I think something like this allows a decent amount of flexibility without too much trouble.

dual guitar effect pedal off-board wiring switched routing order

FX SEND

Something Marshall was using at one stage, but it never really caught on.   It works the same way as an insert on a mixing console, using a switched stereo jack (example here)  It's a handy way to switch two or more pedals on and off that you always want to stack, but you don't have one of those fancy switchers with loops.  

Naturally, the insert can be placed before or after the circuit, and if you wanted to get really carried away, you could have two insert jacks for pre and post.

off-board wiring guitar fx pedal with insert loop


SWITCHED PRE/POST FX INSERT

More switches... same as above, but now with a switch to swap the insert between pre or post.  If I was using this, I'd use a toggle switch as it can be labelled.  Not sure that a stomp switch makes sense for a pre/post switch - that being said, it may make total sense to you.

off-board wiring guitar fx pedal with switched pre/post insert loop



5 comments:

  1. Nice, thank you! Could the two Dual Pedal Options be combined?

    ReplyDelete
    Replies
    1. I can't see the switch used to swap the order working with more than two jacks.

      Delete
    2. Makes sense, thank you! I always wondered why you couldn't order both options for the King of Tone.

      Delete

Note: Only a member of this blog may post a comment.