Vox Wah

[Arn C.]

I have a Vox The CLyde McCoy V848 Rev B    (this is most likely a reissue-has red fasel)
I want to know if anyone knows what board number is the input resistor,   I would like to lower the value for volume increase

Thnanks!
Arn C.

[zombiwoof]

I'd look for a 68k resistor, it should be the only one in there unless they added other stuff to the circuit.

Al

[Paul Marossy]

It would be the resistor connected to the input jack. It should only take a minute to figure that out looking at the tracks on the PCB or using a continuity tester.

[imbuedblue]

Not sure on the Rev. B board but it is R15 on the Rev. A.

[Arn C.]

This thing is buggin me out.   I know to follow the input > to 68K resistor > cap (.01) > base of transistor

I am wondering if it doesn't have one?    I follow the input wire > goes to cap  (also a 1 M resistor to ground) > then to the base of the transistor.

imbuedblue  :  Does your R15 go through c1 then to Q1 ?

This is so different from the v847



Thanks!
Arn C.

[Paul Marossy]

It should have a 68K input resistor, that's something that I don't think any version of the Vox wah has messed with. But I suppose there's a first time for everything...

[Arn C.]

Yeah there is one and it goes to a cap then to a transistor base, but I can not see how it is tied to the input

no schematics to look at this?  I can't seem to find any

Arrgh!

Arn C.

[Arn C.]

Posted by: imbuedblue 

Not sure on the Rev. B board but it is R15 on the Rev. A.


That was it!   I changed it and it is great now!!!!!!!!!

Thanks everyone!
Arn C.