Ibanez - WH10-V2 Weeping Demon Wah  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.

Re: Ibanez Wah WH10-V2

Postby popper » 26 Nov 2012, 19:53

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Re: Ibanez Wah WH10-V2

Postby popper » 29 Nov 2012, 20:24

WH10v2 vs WH10
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Re: Ibanez Wah WH10-V2

Postby popper » 29 Nov 2012, 20:26

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Re: Ibanez Wah WH10-V2

Postby azrael » 05 Jan 2013, 18:56

Did you get your Karaluch wah back? I messaged the guy on Facebook, never heard back.
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Re: Ibanez Wah WH10-V2

Postby popper » 27 Jan 2013, 11:20

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Re: Ibanez Wah WH10-V2

Postby azrael » 28 Jan 2013, 20:36

Take some pics of the inside! I'm pretty interested in what he did. :)

Especially since he wouldn't reply back to me haha
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Re: Ibanez Wah WH10-V2

Postby popper » 30 Jan 2013, 10:22

It's impossible to see used parts because everything is covered by black liquid thing to hide his secret.
I see only additional PCB and places with new parts...but covered.
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Re: Ibanez Wah WH10-V2

Postby azrael » 30 Jan 2013, 17:28

It may be possible to degoop it. Many people here do it.
viewforum.php?f=55
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Re: Ibanez Wah WH10-V2

Postby prinzollo » 03 Feb 2013, 16:40

Any news by the Karaluch Custom guy? I wrote him on facebook too, but no replies yet..
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Re: Ibanez Wah WH10-V2

Postby azrael » 04 Feb 2013, 11:32

Hahah, I finally got a reply. He said he would not be able to do a kit. Wow, It's February now, I emailed him almost 4 months ago haha.
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Re: Ibanez Wah WH10-V2

Postby popper » 04 Feb 2013, 11:36

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Re: Ibanez Wah WH10-V2

Postby frusciante89 » 22 Jun 2013, 12:28

sorry for the dumb question guys, I'm trying to learn some electronics...
1) what is the different between Vbias and Vcc in Dirk's schematics?
2) can I remove the dry output section?
3) in the bottom-right part of the schematic, what is the foot-switch referring to? are we using a 3dpt?
4) what is physically sw1.a and sw1.b?
5) what is block of 2 resistors and a capacitor in the middle left doing?
6) where are the third legs of the P1 and P2 pots going?
7) can I put everything on a single faced pcb?

and, more importantly:

8) were can I learn what the different parts of the circuit do in a guitar pedal? I admire how you guys can analyze the difference that a cap or a resistor will do on the circuit, and I'd like to master this ability... I'm an aerospace engineering grad student, and I do studied simple electric circuits, however I have no idea of the effect that different component and component values will have on a circuit...

Thanks for your help,
Andrea :)
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Re: Ibanez Wah WH10-V2

Postby frusciante89 » 22 Jun 2013, 23:33

Also, what is the dry output section for?
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Re: Ibanez Wah WH10-V2

Postby p.eat » 23 Jun 2013, 05:55

frusciante89 wrote:sorry for the dumb question guys, I'm trying to learn some electronics...
1) what is the different between Vbias and Vcc in Dirk's schematics?
2) can I remove the dry output section?
3) in the bottom-right part of the schematic, what is the foot-switch referring to? are we using a 3dpt?
4) what is physically sw1.a and sw1.b?
5) what is block of 2 resistors and a capacitor in the middle left doing?
6) where are the third legs of the P1 and P2 pots going?
7) can I put everything on a single faced pcb?


1) Vcc is the supply voltage, in this case 9V. Vbias is sometimes also called Vref and is the virtual ground. It is mostly half of Vcc, so 4,5V

2) Yes, as it feeds its own output

3) Sw2 is refering to the footswitch. I think the original has a DPDT but only one switching element (ebene if you speek german) is used. You can use almost any switch as long as it has at least 1 switching element. SPST, DPDT, 3PDT....

4) Sw1 is a double pull single throw (dpst) switch. Imagine a switch that has two switches inside and both get switched by the same lever

5) See number 3. This network creates Vref.

6) They are not connected. P1 and P2 are used as variable resistances, so only two legs are needed.

7) Sure, why not?
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Ibanez - WD-7 Weeping Demon Wah

Postby adielricci » 31 Aug 2013, 18:32

To whom it may interest, some pictures of my Ibanez WD7 Weeping Demon.

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Re: Ibanez Wah WH10-V2

Postby johnny-guitar » 30 Sep 2013, 05:03

Hi guys, I just got my WH10v2 but I´m a noob when it comes to schematics :oops: . I can solder and have done stuff on pedals but could anyone shed a light on my doubts. First I know I don't have to remove the resistors completely, just desolder on side, but which one? the one on the trace that goes straight to the switch? do I have to solder the leads directly to the end of the resistors? I appreciate any help on this :mrgreen:
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Re: Ibanez Wah WH10-V2

Postby dai h. » 30 Sep 2013, 15:58

get some junk PCB to practice on. Search youtube for soldering/de-soldering tutorial videos. Good luck.

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Re: Ibanez Wah WH10-V2

Postby metakel » 09 Feb 2015, 15:21

Does it get the "pop" sound during switching to and from true-bypass?
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Re: Ibanez Wah WH10-V2

Postby Dirk_Hendrik » 09 Feb 2015, 17:43

No. It's more a "jazzy" sound.
Sorry. Plain out of planes.

http://www.dirk-hendrik.com
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Re: Ibanez Wah WH10-V2

Postby Duckman » 09 Feb 2015, 18:45

Dirk_Hendrik wrote:No. It's more a "jazzy" sound.

8) :mrgreen:
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