Pi Fuzz tone stack question/wish

[DonPetersen]

the Muffs I heard so far all exhibit scooped mids around 1kHz to some extend
Frequency response of the Big Muff

while the Pi Fuzz sim is pretty neutral in the mids. was this done on purpose?

also, if 2 resistor and 2 cap values would be exposed in an adv. tab,
the tonestack could be easily modded to act like a bunch of Muff incarnations.

• Triangle version: R1=33k, C1=4n, R2=33k, C2=10n;
• Ramshead version: R1=33k, C1=4n, R2=22k, C2=10n;
• 1975 version: R1=39k, C1=4n, R2 = 22k, C2=10n;
• 1977 opamp version (1): R1=5.6k, C1=100n, R2=1.2k, C2=120n;
• 1977 opamp version (2): R1=8.2k, C1=100n, R2=1.2k, C2=120n;
• Green Russian version: R1=20k, C1=3.9n, R2=22k, C2=10n;
• Late model: R1=39k, C1=4n, R2=100k, C2=10n
• Reissue version: R1=22k, C1=3.9n, R2=22k, C2=10n;
• Little Big Muff version = reissue version.

And then some different mods:

• Swollen Pickle: R1=33k, C1=3.3n, R2 = 22k, C2=47n;
• Flat mids: R1=33k, C1=5.6n, R2=33k, C2=5.6n;

(or just use these as 'mini presets')

 

[vibechild]

I would like to see something like this on the AxeFX II as well.

 

[jplebre]

give mod capability please way quicker than hacking away pedals!
(people complain that with the axe they play less, I play more! my soldering iron been packed for ages now!)

 

[vibechild]

I'd like to see the PI drive model completely redone. Compared to a real pedal, it sounds compressed and small no matter how you tweak it. It sounds like a modeler, much more so than any of the other effects. With the huge improvements in the amp models with version 6, this has become the weak link in a lot of my patches. Since the PI muffs are such an integral part of so many great guitar tones, I really think it's time to get this model up to the standard of the rest of the Axe II effects.

 

[jplebre]

I have struggled with the Pi Fuzz, but I thought it was because it is not the same muff than the ones I used in real life, and that would be the difference. It would be nice to see Cliff chime in on this pedal, if it's close to his model (again, I have not use this specific model) or if there's a way this guy could be optimized.

But has DonPetersen said, you can use a RC filter calculator to do most of those mods (change the frequency affected). that duncan one is cool