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Thread: Wah Wah Mods

  1. #1
    5150 Things Change's Avatar
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    04.18.17 @ 03:53 PM
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    Default Wah Wah Mods

    For some reason, I can't find a wiring diagram for true bypassing a Thomas Organ Cry Baby. I can find the mod for newer ones though.

    I had a hand wired Thomas organ Cry baby about 7 years ago and got the diagram and everything off the internet but I sold the Wah. Now I have another Thomas Organ Wah and can't find anything on it at all. In fact It seems like when I do a search a lot of the stuff I use to find is gone. Am I in the twilight zone or what?

    Could someone see if something for that search comes up for them?

  2. #2
    5150 Things Change's Avatar
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    There use to be like 3 places that had the wiring diagram and how to mod it out. It's like they vanished.

  3. #3
    Little Dreamer Alanj23's Avatar
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    04.17.12 @ 08:45 PM
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    Quote Originally Posted by Things Change View Post
    There use to be like 3 places that had the wiring diagram and how to mod it out. It's like they vanished.
    How about this....
    From here... http://music-electronics-forum.com/t17244/
    Theres also a PDF here
    http://music-electronics-forum.com/a...ox-wah-wah.pdf
    Hope this helps
    Last edited by Alanj23; 02.16.12 at 09:46 PM.

  4. #4
    5150 Things Change's Avatar
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    Quote Originally Posted by Alanj23 View Post
    How about this....
    From here... http://music-electronics-forum.com/t17244/
    Theres also a PDF here
    http://music-electronics-forum.com/a...ox-wah-wah.pdf
    Hope this helps
    Thanx, I need one that shows how to use a 3p2t switch (9 prong) to hook up an L.E.D. light.

  5. #5
    Little Dreamer Alanj23's Avatar
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    Quote Originally Posted by Things Change View Post
    Thanx, I need one that shows how to use a 3p2t switch (9 prong) to hook up an L.E.D. light.
    The two steps are listed here ...
    http://www.analogman.com/faq.htm
    no diagram but you can work it out using the PDF or GIF above..
    Hope this helps...

    " True bypass switches

    On an old 1970s Thomas Organ crybaby a green wire goes from the
    imput jack to a post on the board, and another goes from
    this post to the switch. You must remove the wire that
    goes from the input jack to the post (remove it from
    the post - not real easy) and run it to the switch
    input X1 instead. Then the remaining green wire which is on the
    old switch can go to Y1 on the new switch (input to wah circuit board).
    The White wire on the old switch should be the output jack
    (X2) and the blue wire should be the board output (y2).
    "
    "Adding an LED to an older effect

    With the DPDT switch, one half (3 prongs on one side) would be the same wiring as you have now. On most old effects this switches the output jack between the input jack (off) and the board output (on). On the other half, connect the middle switch prong to the LED's (-) side. Connect the outer switch prong that is on the ON side of the switch (when pedal is ON and output jack is connected to board output) to a ground point on the board or input or output jack. Tie the (+) side of the LED to the power jack or power on the board. You will need a resistor somewhere in the LED wire path, 1.5K is a decent value for brightness VS current drain. "

  6. #6
    5150 Things Change's Avatar
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    Thanks.
    I don't think I'm messing up anything too vintage.

  7. #7
    Good Enough JakeK21's Avatar
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    10.26.15 @ 12:38 PM
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    Umm, only kinda related to this, but where can I find videos that explain wah mods? I'd like to mix up the sound a bit on my Crybaby wah so that it's not so trebly sometimes, but I don't really know where to start.

 

 

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