Tuesday, 2 September 2014

Jim Dunlop CryBaby GCB-95

While I've got the wah template loaded I may as well add this one too :o)
Again thanks to mmolteratx for the schematic.

Info about the original:
When people talk about wah-wah pedals, they’re talking about the Cry Baby Wahs. This is the one that created some of the most timeless sounds in rock. The pedal that would eventually become the Cry Baby was first created in 1966 by engineers at the Thomas Organ Company. This new and expressive effect was an instant hit with players like Jimi Hendrix and Eric Clapton, who have contributed to the Cry Baby Wah’s huge popularity to this day. While other effects have come and gone, the Cry Baby Wah just keeps getting better with age.











39 comments:

  1. I highly recommend the Whipple inductor. Insatalled one on my crybaby, very sweet sounding.

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    1. Do you have any idea of the dimensions including pin spacing of the Whipple? Some inductors are going to be a pain to use with vero but it shouldn't be hard to adapt the layout in a way that will accommodate any but I literally know nothing about the different inductors used in these wahs and so am not sure at this stage how things would need to be adapted.

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    2. I don't recall exactly, but I think it's similar to the Fasel. It dropped right in to the Crybaby PCB with no modifications needed.

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  2. i have no idea how to put it on an budget enclosure... can a old volume pedal do the trick?

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    Replies
    1. Yes an old volume pedal will work fine as an enclosure, I'd just check there would be no problem mechanically in mounting the correct pot

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    2. they way i build wahs is i look for broken wahs on ebay. i've picked up multiple enclosures for $15-20, i just pull out the guts and put in what i want instead. also. i saw the comment about the whipple, i believe the spacing is the same as a halo inductor, which is 5x5, i think. while i haven't used one a whipple, i've used halo's, fasels, and recently used El Rad style inductors made by joe gagon, he sells them on ebay as the Tone Tank, which i now is the only one i'ld use, the spacing is 4x4 if you make a layout for it.

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    3. I guess you could daughterboard the inductor?

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    4. nah. you would just need to place it in the same area where the inductor is now, and remove or move the links that are underneath it to make the right connections, and you may need to add a cut or two. not a big deal. i did that when i built my wow-fuzz. i had the layout for a halo style, but went with the tone tank i had joe make.

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  3. I recommend Joe Gagan Terrible Terriod inductor at 500 mhz
    they are awesome :)

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    Replies
    1. That's Henry, not Hertz ;)

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    2. ...and that's milli not mega Henries. You're welcome :D

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  4. can't agree more man. he now calls it the tone tank, as he changed the potting and something else about it. definitely the best inductor IMHO. plus he'll help you out with your build, and even make a custom wound one if you ask him. he wound one to about 800mHz, as i read that the colorsound wahs were that high, he made it for me, and explained to me what the inductance does (higher vs lower), he also didn't charge me extra. definitely a good guy in the DIY community.

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  5. The blurb is incorrect...

    with use of 1.21GW and a Delorean, Mason Marangella actually designed this circuit!

    (sorry couldn't help myself! :P)

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  6. Modded my dunlop jh-1 with the help of this: http://stinkfoot.se/archives/557
    The trimmers are really useful to fine-tune your wah

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  7. I am going to make this in the morning. I want to add external pots for gain , and Q.
    So as far as I can tell from the stinkfoot docs , I should change the 390ohm and use a 1k pot for the gain-bass , and change the 1.5k resistor 2k or 5k for Q.. ... I am also going to socket the inductrs parallel resistor and I will let you guys know my fav value for the fasel

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    Replies
    1. Yes to all of the above. It'll be interesting to hear what you think is good in there

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  8. Tried this one twice , with no results. I am tired right now so gonna go sleep and then go over it in the morning. Probably just something missed. Also wanted to ask if it was right that both wah 3 and a spot on the board go to output? Here is a pic of my non functioning in case you guys see any obvious mistakes that I missed http://i1096.photobucket.com/albums/g329/JeremyP2/imagejpg2-4.jpg
    http://i1096.photobucket.com/albums/g329/JeremyP2/imagejpg1-6.jpg

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    Replies
    1. Yes wah 3 also links to the output. I can't see anything obvious in your pics, can you post the transistor pin voltages to see if that tells us anything

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    2. Will do, just away at work for a few days now but as soon as I get back I will post them.

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  9. Do you think something like this will work?

    http://www.mammothelectronics.com/ME-6-Wah-Inductor-p/120-1025.htm

    Please tell me the big orange thing on the Vero is the Inductor.

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    Replies
    1. yes the big orange thing on the layout is the inductor. i would assume that inductor will work, but i don't know the distance between the pins to know if it will fit perfectly on the layout, so you may have to do some modifications to get the connections in the right place, by adding link or two.

      not sure where you are in the world, but if you're in the US, or would spend the money on shipping i would highly suggest looking on ebay for an inductor called the ToneTank, which is an El Rad style indcutor made by a guy name joe gagan who is big in the DIY community, and hand makes each one. they sound awesome. they're a little deeper/throatier sounding to my ears the other inductors, and they're the only one i use now. i think you would have to add links to make all the connections needed.

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    2. Awesome man! Thank you for all the info!

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  10. And ...change the 390R with 510R and 82K with 100K and we'll have the Vox V847! :D
    without input buffer!
    But I am not sure if Vox uses MPSA18!

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  11. My friends, if I would take off the buffer components, can I put the 9v at the first stripe of board and the input at south side of 68k, right?
    Do I have to jumper anything?

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    Replies
    1. Yes. That sounds good. Although, you should omit the 10K from that strip to ground.
      +m

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  12. Also, I think it miss the 9v1 zener....possible?

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  13. Built it!! Verified!! Thanks Mark!!

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  14. Ok this is work,,with my DIY inductor,, but my inductor its about 2000 mH and its Wak wawwww LOL. Thanks iviark

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    Replies
    1. bikin inductornya kya gimna bro....bagi infonya dong....hehehe

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  15. is this layout the same as if i were to true bypass an existing gcb-95?

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  16. http://www.youtube.com/watch?v=BuptBeeiuZQ&feature=youtube_gdata_player

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  17. Nice video Agung! Someone tag it! VERIFIED

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  18. Hey guys,
    Somethings strange with my built... The frequenzy range isnt very wide for a wah and I think the outputlevel is a bit to high. I'm using a bespeco wah enclosure withe a 100k pot and a fasel 500mH inductor. The pot is fine and the inductor is brand new. Im wondering why it doesmt work properly? Any idea?

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  19. Replies
    1. hy bro...saya dri indo jg nih...BTW inductornya pake apa bro....trmksih

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  20. thank iviark for mini vero layout . yeahh u rock

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