Multiple effects in 1 box

[grathan]

http://www.generalguitargadgets.com/pdf/two_in_one_wiring.pdf


I've got 12 effects going into a single box. I want to use this diagram, but I don't need leds or the battery hookup. Can i use this circuit and just leave out the leds, resistors, and battery hookups or are they essential to the circuit?

[drk]

yes, you don't need to put them for the circuit to work.

[grathan]

Thanks, one more question. If I wanted to make the effects order interchangeable, I would need to keep the Ground, input, and output wires from each switch isolated for each circuit for swapping or would this not be doable?

[petemoore]

  Read GEO.
  also something at DIYSB:
  http://www.diystompboxes.com/smfforum/index.php?board=29.0

[grathan]

I've read all of the stuff at Keen's site and tried to find relevant posts here. There are just too many variables to wrap my newbie mind around even if I get the basic concept of how multiple 3pdts might work in a single enclosure.

The problem I am running into is making the box expandable ( I currently only have 2 effects and 6 3pdt switches hooked up as per the above diagram)

I've decided to "float" the in, out, and ground of each effect circuit while using a common power lug.
This will hopefully allow swapping of the effects order. (There is a small bread board inside the box)

For the 4 switches wired in with no effect circuits in place yet, can I just hook neg to pos to complete a circuit? Same for the in and out lugs?
thanks

[LEON.01]

Came across these, thought they'd might help.

[MikeH]

Thanks, one more question. If I wanted to make the effects order interchangeable, I would need to keep the Ground, input, and output wires from each switch isolated for each circuit for swapping or would this not be doable?

If you want them to be absolutely interchangeable, the best way is to have separate in and out jacks for each effect and use jumper cables to put them in order, like a patch bay.  If you just want to be able to flip 2 effects here and there, or be able to put one effect ahead of some others or after, then you can use the 'juggler' at geofex.  It can be done with a 3pdt toggle.

Basically, the juggler is a switch that has an input and an output, and 2 send and returns that change order.  So it's not limited to A->B vs B->A configurations.  It can also do:

-> A-B-C-D - jug - E-F-G ->  vs.  -> E-F-G- jug - A-B-C-D ->

Or ->A-B-C-D-E-F - Jug - G -> vs.  -> G -jug - A-B-C-D-E-F -> (this one is good for swapping a boost from the front to the end of your signal chain)

Kind of hard to demonstrate, but do you get what I mean?

Also; it gets icky, but you can put jugglers inside jugglers- So, if you had 3 effects say, and 1 jug is flipping A and B, and another flips C from before the ABjug to after the ABjug, you possibilities are: ABC, BAC, CAB, and CBA.

[MikeH]

And to answer your question- the grounds can all be shared, regardless of how you're swapping the order of the FX.  In fact, they HAVE to be shared.

[studiostud]

I valuable piece of advice I heard about grounding...  "Not everything has to be grounded in the same place... but everything has to be grounded together."