#1
I'm interested in modding my Digitech Death Metal pedal. I've got a schematic for it and it's virtual twin the Grunge pedal. I'm planning on adding a gain control knob. Has anyone done this before? Anything I should know?
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#2
throw it against a wall, it'll sound better afterwards
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#3
I like how it sounds, otherwise I wouldn't want to modify it. I just want to use it on less than 'ultra-mega' distortion levels, more in the range of 'super' to 'ultra' distorted.

And if I threw it against a brick wall, I'd have a cracked brick wall and a scratched but perfectly working pedal.
No gods, no countries, no masters.
More guitar, less Ultimate-Guitar.
Be Serious.
Shorties represent!
Ibanez SZ520/Ibanez ORM-1/Ibanez RG7321/Pocket POD/Crate GX/Boss HM-2
#5
No gods, no countries, no masters.
More guitar, less Ultimate-Guitar.
Be Serious.
Shorties represent!
Ibanez SZ520/Ibanez ORM-1/Ibanez RG7321/Pocket POD/Crate GX/Boss HM-2
Last edited by STABxYOU at Feb 11, 2008,
#6
I would exchange both the first 220K feedback resistor as well as the second 120K feedback resistors for pots, to begin with. That will allow you a huge amount of gain adjustment. Also, try swapping the 1N4148 diodes for germaniums (1N34, etc.) and/or, place the clipping diodes in parallel with the first, second, or both feedback resistor stages (tube-screamer-ish). Two successive stages of feedback clipping sound sweet, IMO.
#7
They have listed lots of possible mods right on the sheet.

Try playing with the clipping diodes. Different materials will give different sounds. To reduce gain I would try two or more silicons in series...Try LEDs too. Might want to use new transistors with lower gain.

I find with cheap pedals like this it is good to replace key components in the signal chain to high quality materials (metal film, poly film etc.)...Also I have never tried this pedal but I imagine it is shrill and lacks bass and mids. Try working with those ideas.