CGP - Vox V847 Wah Wah Pedal Mods - Sweep Range, True Bypass and LED 

Finally a sweep range comparison! Thank you

Hi glad you like the video, you need a DPDT (double pole double throw) footswitch to do a basic true bypass mod. If you want the LED as well you need a 3PDT footswitch. You should be able to source from any decent electronics suppliers or stompbox parts suppliers. Cheers

Sweep range mod is magical. I transformed it into a true bypass awhile ago, but now I added 10nf in there and it's sounds much, much better. Almost no noise and overall frequency response is what it should sound like as a base model i think. Although i personally don't see the point of going higher, unless you need a bass wah, with 10nf it's sitting on the edge of my clean signal already, but then again it's totally worth it.

If you look at the webpage in the description it has a link to another website that has an older version of the circuit board on it. This is where I got the ideas for these mods. Hope that helps

Very helpful ideas, but I wish you'd shown us the step by step processes for inserting true bypass switch - it's much more helpful/reassuring when you can follow the steps 'you see'.

You could use a VariCap and include a control on the outside of the pedal, would give a wide range of the Wah range. Nice video. Merry Christmas.

I've just scored an old USA made V847. I'm going to make it true bypass and eventually i hope to have all the functionality of the Dime Crybaby.

Hook the ground wire up to one of the jack terminals with a black lead coming off it. There is a diagram of how you would wire a DPDT for true bypass on the website, I have added a link in the description above. hope this helps

Could you just hook a pot to where you are putting resistors and have it adjustable from outside the pedal?

Hi, I haven't looked at a V845 myself but the wiring to/from the switch should be essentially the same although wire colours may be different. As such you should be able to follow the same method for installing a true bypass switch. One thing I didn't mention in the video the replacement switch may not be exactly the right height for the pedal to trigger it, I got round this by sticking some thin card under the pedal to get it to match up. Good luck

I've watched the whole video waiting to see how to install LED....... :( also i know that when you have the pedal in front of you everything seams easy but big close ups would be good especially when quality of the video is really low (360p) thanks for the video tho!!:) i like the capacitors mod , but didn't understand exactly how to solder them together

What LED should I use? I found the switch on Amazon, figured I'd get the LED there as well, just not sure what spec to search for. Thanks and great video.

your mod is called "sweep range", but it isnt really extending or contracting the range at all, or at least it doesnt sound like it, ive done the same mod. it is changing the center frequency of the sweep.

hi, great mod, Like the idea of true bypass switch and LED. I have a a question about how you wired the LED and ground wires to the DC Jack. On the diagram on the website the dc jack - is the boss style one. Vox has a lil different one, which confuses me a bit. Do you have a pic or could explain to me how soldered the wires to the DC jack. Many thanks

I have done this 3 option sweep mod as well as making my pedal true bypass and putting an LED in the pedal. Though I’m having difficulty with doing the volume, mid range, bass and gain, and vocal mod. I have the same board layout as your Wah pedal and the website you listed has a different board in the pedal. How do I do the mods on the website you listed, on the pedal you are using in your video?

good evening I'm looking for the pcb diagram for vox pedal wah wah thank you

I JUST WANT TO KNOW IF I CAN SWITCH ON TRUE BYPASS USING MY DAPHON DF2210 WAH PEDAL AND PUT A LED ON IT?

im new to wahs where is the battery? i think i need a new one

would be very nice of me capasitores values ​​and I wonder if the original parallel places in Honduras and really am not very well speak very good English but I wonder if the video is the same rocedure for the VOX V847 made ​​in china ?

Hi! I made it (actually, I don't know how, cause I don't understand eletronics)... But the only problem Is that the VOLUME is way down... any tips? Thanks a lot

hey , cool project , but why dount you use a pot instead of the treeway swich? i belive that will remowe the "popping sound" .

hello how I can eliminate the ssh noise using the AC/DC adapter in the wha 847?It increases with other effects as distortion and others in the chain. It is possible put 1000 pF ceramic capacitor filter between the power positive input of adapter and the mass (negative) of the pedal? I provided that stabilized power supply and the rest is good. I'll wait your valid suggestion with a schematic diagram. Regards

Thanks. I got a carlin dpdt footswitch for the mod. Which is the ground wire on your mod?

It works with v847a?

Instead of trying out a batch of capacitors to get the one required to give you a different tone out, be it one with more bass or treble, I think an even better idea would be to drill 2 holes in the case, put 2 test instrument sockets in the holes and solder leads from these, one to each leg of capacitor C2. That way you can make a kit of capacitors of different values that can be put across the new terminal sockets (maybe using croc clips connected to terminal plugs) as and when required to alter the tone of Wah Wah. It would also enable you to revert to your original Wah sound when need be. A future modification maybe?? I know I'll be doing this!!

hey bro nice vid. i just brought a v847 and i want it true bypass. what the name of that new piece to put in? double fro somethin switches? where can i find one?

Hi i have the Vox V845 Wah, would the switch mod work on that? my pedal is a massive tone sucker at the moment

I have the new vox v845. want to convert it to true bypass. Is it similar as this 847 mod? Thanks

This one is identical scheme as mine. I bought last year, made in China. It’s very different from the one v847 that I bought in 1996 made in USA.

Where you from man and would you do these mod for someone and how much all in?

I've looked all over on UTUBE for how to make my newly just bought Vox V847-A easier to push pedal down on and off switch it's hard to on and off please help

This will work on VOX V845? Thanks

hi, test sound? please

Hi TEST SOUND please :)

Boa noite realizei todo o procedimento no meu pedal wah, coloquei um led para sinalizar o on e off, quando ligo a chave 3pdt 9 vias da um estalo no momento do ato de ligar, quero saber como posso retirar isso ou se realmente tem algoma possível possibilidade?

Secreto debelado

what the f... why dont they install this mod stock and just send the bill to buyers or just include the mods and customer pay for it??

you said 9.947 first then you said it was 9.957..which one is it..LOL:) This video is so low res I can't see a damn thing as far as detail. It's one big blur. Redo the video at a higher resolution so we can see what's going on with the soldering and connecting.

team beach body lols