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Big Muff Diode Switch Mod


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i performed the big muff "no diodes" mod this evening with great results.

 

more mids, more volume, more "open" sound.

 

not as gainy, but its still very fuzzy. i find it more usable for what im doing.

 

its almost "overdrivey" but, fuzzy. it still retains the big muff character, but i feel that it opens it up a lot more.

 

if anyone is frustrated with their NYC muff and wants a more usable sound thats not as dark and scooped, try this mod.

 

all you gotta do is remove the four clipping diodes in the feedback circuit.

 

http://www.student.ru.nl/r.kerkhof/Taas/Mods/Big%20Muff.htm

 

under the "Easy Mods" heading. lots of other diode swap options.

 

EDIT: clips on page 5!

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ok really though, im gonna try to do a really small (catalinbread) style box.

 

 

You mean the 1590A? ('bantam' boxes). No chance dude, sorry. If you ditch the tone pot, use 9mm pots for the other two and design a double sided SMD PCB you might be able to squeeze it in there.

 

I've got one in a 1590B and it's a tight fit. Even the simple boost I recently built in a 1590A was a much tighter fit that I thought.

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haha, I did the same thing for my muff. Was going to replace them with germanium, but I never bothered to source the diodes, and ended up liking it better that way. This was before I have almost {censored}ed the pedal and am now trying to fix. Still, god to know someone else did this, cool stuff!

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FYI, if you remove the diodes in the first clipping stage only you essentially have a Colorsound Supa Tone Bender. If you go further and bypass the 4th transistor stage after the tone control you have the Jumbo Tone Bender (also the current Tone Bender reissue). This is what Barber made switchable in the Trifecta.

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An 'overdrivey' Muff? Why didn't you just get a Double Muff and keep the BMP as is?

 

 

a diode-less Big Muff and a Double Muff are still very different things. plus, the mod is easily reversible if the OP didn't like it.

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