#1
Well here it is:



My 1970's Vox wah.

Picked it up for only 620kr ($80/£50/€55), said it was broken.

So I tried it and well it did work! However it was far from perfect. The sweep was a bit small and I had problems with the bypass (sometimes the sound would cut out) and the jacks were old. So Im going to replace the switch and jacks and possibly the pot (I'll oil it and see if it works better). The rest of the board seems to work, but I might get some parts to mod it. But if I replace the pot, which pot do you recommend?







Quote by stratman_13
It's okay Gabel. You kick ass.



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#2
A friend of mine built me one these to the exact specs of the 1970's one and it sounds amazing!

Once you get it up and running you'll love it!

Happy new pedal day!
American Strat:
Area 61 Neck, Area 67 Middle & Bridge
Spretzel Locking Tuners
Graphtech Nut & String Tree
Lots O' Love!

JSX + Orange Cab
Fender Blues Deluxe
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#3
*sniff* its so beautiful!!

seriously though, I have no idea.
Equipment:

Dean VX
Dean Avalanche 7
Squire SE Stratocaster
Vox AD50VT
Boss OD-20
Dunlop Crybaby 535Q
#4
hey ...
You got me scared there. For a moment i thought this was about the German NPD (nationale partei Deutschlands) - German nationalist party / neoNAzis .

Cool pedal, from when is it ?
#5
right on! i have an old school Dunlop Cry Baby, and the wiring is very similar to that. congrats to that
Epiphone G-400
Yamaha Pacifica (Mod on hold due to procrastination)
Rocktron Banshee
Marshall 10CD

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#6
Quote by Robertoodavid
hey ...
You got me scared there. For a moment i thought this was about the German NPD (nationale partei Deutschlands) - German nationalist party / neoNAzis .

Cool pedal, from when is it ?


NPD= New Pedal Day

1970's sometime...

I'm guessing the beige component with the blue thing on top is the inductor?
Quote by stratman_13
It's okay Gabel. You kick ass.



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#7
Quote by Gabel
I'm guessing the beige component with the blue thing on top is the inductor?


Looks like a capacitor to me. I can only see one transistor on the board, what's up with that?
#8
Quote by mr_hankey
Looks like a capacitor to me. I can only see one transistor on the board, what's up with that?


No idea. What boggles my mind is where the inductor is, there seems to be none!
Quote by stratman_13
It's okay Gabel. You kick ass.



18watter video demo

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Recognised by the Official EG/GG&A Who To Listen To List 2009
#9
Quote by Gabel
No idea. What boggles my mind is where the inductor is, there seems to be none!


Could it be this?



(Disregard the volume control).
#10
Quote by mr_hankey
Could it be this?



(Disregard the volume control).


I'm not certain, hang on I'll do a larger pic of the board! What schematic is that by the way?

It looks like it could be that one though!



Quote by stratman_13
It's okay Gabel. You kick ass.



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#11
Colorsound wah.

It's too hard for me to trace that circuit board without looking at it myself; but it's definitely not the standard (Vox) circuit.
#12
No I see that. The sound is rather fat. One idea I have now is to use the case and then make a new board instead and make a copy of an old Vox. That might be a better idea?
Quote by stratman_13
It's okay Gabel. You kick ass.



18watter video demo

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#13
Quote by Gabel
No I see that. The sound is rather fat. One idea I have now is to use the case and then make a new board instead and make a copy of an old Vox. That might be a better idea?


That's probably what I would do. With all the proper parts; tropical fish caps, carbon comp resistors, etc.

By the way, Vox should start putting that white edge on the new wahs. It looks much better.
#14
Yeah that was actually kind of my idea from the start, a Vox with original style parts. The only part is finding the inductor... However if somebody would be interested in the schematic I could donate it!

Even though I have a new one, I love the look of this and I was kind of planning to replace my V847 sooner or later...
Quote by stratman_13
It's okay Gabel. You kick ass.



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Last edited by Gabel at Jul 10, 2009,
#15
Quote by Gabel
Yeah exactly!

Yeah that was actually kind of my idea from the start, a Vox with original parts. The only part is finding the inductor... However if somebody would be interested in the schematic I could donate it!

From what I hear, the Whipple inductor is the one to go for. It's on ebay.
#16
Quote by mr_hankey
From what I hear, the Whipple inductor is the one to go for. It's on ebay.


The Whipple is a very good inductor. I changed out the standard boring one in my Dunlop Crybaby to the Whipple and it made quite a difference. This was without any other mods to the wah.
#17
Well then I'll get this then.

Also, is this a good schematic to use?
Quote by stratman_13
It's okay Gabel. You kick ass.



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Last edited by Gabel at Jul 10, 2009,
#18
So finally, I'm planning on getting NOS "Tropical fish" caps and NOS transistors too.

This is the one I'm using:
http://fuzzcentral.ssguitar.com/mccoy.php

But last, does anybody know where I could get a PCB to match this or do I have to make it myself?
Quote by stratman_13
It's okay Gabel. You kick ass.



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#19
Quote by Gabel
So finally, I'm planning on getting NOS "Tropical fish" caps and NOS transistors too.

This is the one I'm using:
http://fuzzcentral.ssguitar.com/mccoy.php

But last, does anybody know where I could get a PCB to match this or do I have to make it myself?


Maybe you could use the BYOC PCB? I don't know if they still sell separate PCBs.

That's a good schematic.
#20
BYOC would work, but it didn't look like the people who stock BYOC products had their PCBs though...
Quote by stratman_13
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#22
I did. However BYOC seems to be out of them or something, because you can't order them straight from them...
Quote by stratman_13
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#24
I built the BYOC (ordered the PCB from their british supllier).. have to say I didn't like it much.
I used a whipple for it + NOS BC109 trannies.. couldn't get the sound I wanted.

I ended up building a clyde clone from this layout (link ).
it's the same board as the original clyde, at least by my comparison to a schem I saw back then, but the clyde had a 100k resistor for R12, and a 4uF BP cap for C2.
I read the trannies varied somewhat.. BC109c should be a good bet though.
I got tropical-fish caps,used the whipple for that one too and it's great.

after a bit of tweaking, i'm in love with it.
I used a 100K trimmer for R12(which I set to about 100K...), and ended up with a 12nF cap for C4 (the 'range' cap).

also, I tried a few pots for it, and the one I liked best was a 150K pot, sorry don't really remember the maker or where I even got it
#25
Thanks a lot, that saves me a lot of money to use a perf, since I already have them!
Quote by stratman_13
It's okay Gabel. You kick ass.



18watter video demo

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#27
Nezek that design for the board looks like the way to go. I already have a perf and most PCBs I've found are fairly expensive...

I also do see I have some Tropical Fish caps on my wah already... Basically instead of throwing away the board I might ahve some use for it! Does anybody know if there's some color coding on them to see their capacitance or if I need to measure them?
Quote by stratman_13
It's okay Gabel. You kick ass.



18watter video demo

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#28
I'd measure them. old caps tend to drift sometimes..
and do check that silvery electrolytic cap too.. looks interesting.

* if the posted schem really fits your wah, I don't see any caps you'll actually need from it for the v846/clyde
#30
the last picture looks like various sandwiches/buns
Call me Cam
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