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DIY Stompboxes => Building your own stompbox => Topic started by: Arn C. on May 08, 2009, 08:38:30 AM

Title: Switching Two Effects In One Box
Post by: Arn C. on May 08, 2009, 08:38:30 AM
Howdy all,
   I am putting two effects in one box and would like to be able to add the 2nd effect to the end of the first effect and also true bypass.

Any help would be appreciated.  I know this is probably simple, but I am having a senior moment.

Thanks!
Arn C.
Title: Re: Switching Two Effects In One Box
Post by: Auke Haarsma on May 08, 2009, 08:41:05 AM
depends on what you exactly want...but what's wrong with two 3PDT's?
Title: Re: Switching Two Effects In One Box
Post by: Arn C. on May 08, 2009, 11:14:11 AM
Yes, two switches are fine, just can't figure it out.

Maybe I can make it clearer:

I have a distortion circuit that I would like to be able to add or remove a compression circuit after it.  Also I would like true bypass.
Just can't seem to get my head around figuring out how to wire it up.

Arn C.
Title: Re: Switching Two Effects In One Box
Post by: Auke Haarsma on May 08, 2009, 11:18:44 AM
Ok, just imagine those two effects have their own enclosure. Two effects, two enclosures.

Normally you would bypass each effect with a single 3PDT. The connection between the two is a patchcable.

Now, we strip the two enclosures. replace the patchcable with 'normal' wires and connect output of dirt-effect to the 3dpt of the comp-effect.

But, here is the change:
-you connect the output of the compressor to the 2nd 3PDT, but the 2nd 3PDT leads back to the first 3PDT. The first 3DPT then goes to the ouput jackbus.

Maybe a little drawing would be easier. Hold on ;)
Title: Re: Switching Two Effects In One Box
Post by: The French connection on May 08, 2009, 11:26:32 AM
The output of the first one become the input of the other.
Here's one with grounded input (better for high gain fx)

http://www.generalguitargadgets.com/pdf/two_in_one_wiring.pdf
Title: Re: Switching Two Effects In One Box
Post by: Auke Haarsma on May 08, 2009, 11:27:00 AM
here's a pic:

(http://pics.2muchgear.nl/23DPT.png)
Title: Re: Switching Two Effects In One Box
Post by: aChorusofJays on May 08, 2009, 12:50:06 PM
Just what I was wondering for a future project! Accidentally thanks in advance!
Title: Re: Switching Two Effects In One Box
Post by: Arn C. on May 08, 2009, 04:19:28 PM
Thank you so much.  I could see it in my head, but just couldn't get it on paper.

Peace!
Arn C.