Inspired by the above post, I decided to rip my old crybaby apart, as she's been on the shelf for years now. Who knows, maybe I'll fall in love with her againbajaman wrote:Forget about Teese wahs and all the bullshit about specially manufactured parts etc., here is how to make any standard cry baby wah sound much better.
First - replace all those shitty little blue capacitors with some better quality ones - I used those little grey MKT film types, but you could use xicon film for still better results. (They are 10n x 2, and 220n x 2).
Second - find the 4.7uf electrolytic capacitor and it's 82k ohm bypass resistor - replace them with a 3.3uf BP paralleled with a 680n film type (for close to 4uf) and a 100k metal film resistor (or metal oxide).
Third - replace the 390 ohm resistor with a 510 ohm ( or parallel 2 x 1k ohm)
That is it - just plug in your guitar and enjoy wah wah sounds ( not woh woh as in the stock GCB95)
No need for special taper pots, fasel inductors or any of the other bullshit stuff - just good quality capacitors and the correct value resistors is all you need
Cheers
bajaman
Digging teh interwebs yielded loads of grainy lo-resolution pictures of the circuit board, so i decided on starting out by making these:
Parts list is as follows:
D1: 1N5239B (9,1V zener)
Q1: MPSA18
Q2: MPSA18
Q3: MPSA13
C1: 10nF
C2: N/A
C3: 4,7uF
C4: 220uF
C5: 10nF
C6: 0,22uF
C8: 0,22uF
C9: 10nF (code 103)
C10: 22pF (code 220)
C11: 100nF (code 104)
J3: N/A
R1: 1,5K
R2: 1K
R3: 82K
R4: 22K
R5: 33K
R6: 470K
R7: 470K
R8: 10K
R9: 390R
R13: 1,8M
R14: 10K
R15: 68K
R16: 2,2M
R17: 0R
R18: 1K
I'll be replacing the caps with proper film equvalents, and all resistors with low tolerance metal film type resistors.
Next step: applying Bajaman's mods on the drawing board.
Does anyone have a proper schematic of this pedal? The ones i could find via google were pretty crappy, and some of the values were different...