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DIY Stompboxes => Building your own stompbox => Topic started by: Seven64 on May 16, 2011, 03:52:20 PM

Title: 3PDT Bypass Wiring
Post by: Seven64 on May 16, 2011, 03:52:20 PM
why is our FAQ different from GGG which is also different from madbean?

im really confused on how to wire one of these up without a PCB from smallbear
Title: Re: 3PDT Bypass Wiring
Post by: StereoKills on May 16, 2011, 03:56:35 PM
I always used the one from Tonepad :)

They are at the core, the same. Really the only differences I can see are the order in which the switches are arranged (meaningless really) and whether it grounds the effect input when bypassed (I've always done this, don't see any reason to stop).
Title: Re: 3PDT Bypass Wiring
Post by: Seven64 on May 16, 2011, 04:05:10 PM
after some more searching, it seems lots of people have bad luck with the slow gear, so maybe they are working and its just the PCB that isnt
Title: Re: 3PDT Bypass Wiring
Post by: Seven64 on May 16, 2011, 04:06:08 PM
which way do these switch?  when the holes are vertical, does it switch vertically or horizontally?
Title: Re: 3PDT Bypass Wiring
Post by: Kearns892 on May 16, 2011, 05:08:34 PM
There are a lot of different ways of going about the same (or similar) things. IIRC, the one we show does not have the input grounded when bypassed while madbean's does. 

If by "vertically" you mean when the holes are aligned up and down then, yes the switch switches vertically (look at a single SPDT and it will make sense)

Try searching and lots of similar topics should come up.
Title: Re: 3PDT Bypass Wiring
Post by: Steve Mavronis on May 16, 2011, 06:07:11 PM
Check this scheme out. I've been using it and works great!

http://gaussmarkov.net/wordpress/thoughts/wiring-up-a-1590b/
Title: Re: 3PDT Bypass Wiring
Post by: kungpow79 on May 16, 2011, 08:06:58 PM
Tonepad #5
Title: Re: 3PDT Bypass Wiring
Post by: spargo on May 17, 2011, 04:30:27 AM
Quote from: Steve Mavronis on May 16, 2011, 06:07:11 PM
Check this scheme out. I've been using it and works great!

http://gaussmarkov.net/wordpress/thoughts/wiring-up-a-1590b/


I'm a fan of this one because it actually makes SENSE when looking at the switch.
Title: Re: 3PDT Bypass Wiring
Post by: darron on May 17, 2011, 08:32:02 AM
Just to add to confusion:
http://www.dazatronyx.com/support/what-is-true-bypass/ (http://www.dazatronyx.com/support/what-is-true-bypass/)


There's a full explanation there though too...
Title: Re: 3PDT Bypass Wiring
Post by: Steve Mavronis on May 17, 2011, 09:35:11 AM
Quote from: spargo on May 17, 2011, 04:30:27 AM
Quote from: Steve Mavronis on May 16, 2011, 06:07:11 PM
Check this scheme out. I've been using it and works great!

I'm a fan of this one because it actually makes SENSE when looking at the switch.

Yes, because it's the only 3PDT wiring scheme that is fully symmetrical with all the inputs on one side and outputs on the other side and ground connections in the middle. Plus in addition, the PCB input gets grounded when switched to bypass mode eliminating any pop problem. Simply brilliant.
Title: Re: 3PDT Bypass Wiring
Post by: spargo on May 17, 2011, 06:21:28 PM
Quote from: Steve Mavronis on May 17, 2011, 09:35:11 AM
Quote from: spargo on May 17, 2011, 04:30:27 AM
Quote from: Steve Mavronis on May 16, 2011, 06:07:11 PM
Check this scheme out. I've been using it and works great!

I'm a fan of this one because it actually makes SENSE when looking at the switch.

Yes, because it's the only 3PDT wiring scheme that is fully symmetrical with all the inputs on one side and outputs on the other side and ground connections in the middle. Plus in addition, the PCB input gets grounded when switched to bypass mode eliminating any pop problem. Simply brilliant.

Yep.  This is the one I found when I first started building so I used it.  Then I stumbled across others and got really confused.
Title: Re: 3PDT Bypass Wiring
Post by: davent on May 17, 2011, 07:32:27 PM
I like an earlier version of Darrin's Fig.b, that has the input on the inner tabs and the outputs on one of the sets of outer tabs.

(http://i216.photobucket.com/albums/cc305/davent/IMG_2741.jpg)

dave