Big Muff - Again

[Papa_lazerous]

Ok I have use search and trie doing my home work before asking this.

I've seen over on GEOfex there are a few articles R.G has done explaining how the Fuzz face works and other things like wah etc.

and there are a few posts way back I found using search that explans different stage of circuits but I cant find anything on the muff thats definitive.

What I'm looking for is an article that exams each stage of the circuit and goes through the function of each stage.  It would help many who use the forum I'm sure plus it would help me fully understand what I only partially understand right now 

Anyone interested in putting somethign together or explaining it? Say break it down into four parts each part centering around each tranny to keep it simple. 

[Processaurus]

http://muzique.com/ebook.htm

I bought it, its good.  It has a lot of variations in addition to the analysis you're looking for.  There's a lot here too.

[Papa_lazerous]

Thanks for the link I may look into it but I am sometimes wary of buying things like that if I cant see them first.  Could just be buying rubbish

[petemoore]

  Nothing better than a Breadboard or 'creative perfboard' project to tell reams about what does what in a stage of a big muff.
  You can hit it with different input signals, revoice and rebias it, try different clipping elements, take voltage measurements when changing resistor values to see what bias is about.
  Compare reads on biasing transistors from GEO, data sheets, numerous schematics and texts also can tell reams about parts of circuits in a 'what happens when' context.
  Yun and everyone with a BMP to mod who contributed to the Yun's mods and other threads on BMP's here.
  heres some suggests for a/ clipping stage
  Eliminate or reduce the resistance between E and Ground,
  use raise 10k value on collector bias resistor
  Use assymetric clipping elements on the first? stage..
  Change the cap values to say 2x - 10x smaller Uf value feeding diodes
  Reduce or raise the diode cap value
  Reduce or raise the cap at input and or output.
  Haven't heard much about diddling with the 470k across B/C, the base bias resistor, raising it probably wouldn't do much, lowering it would pull the base bias toward collector.
 

[Papa_lazerous]

I'm aware of the many mods for the muff, And I can play with the circuit till the cows come home I was thinking of a proper breakdown of it more than a suck it and see approach

[jonathan perez]

http://muzique.com/ebook.htm

I bought it, its good.  It has a lot of variations in addition to the analysis you're looking for.  There's a lot here too.

Thanks for the link I may look into it but I am sometimes wary of buying things like that if I cant see them first.  Could just be buying rubbish

if it was rubbish,
1. it wouldnt be for sale
2. we wouldnt purchase it

[burnt fingers]

I can try the short and simple,  Stage 1 is a basic amplifying stage, a booster essentially.   Next is the gain control,The pot controls the amount of signal that will go to the rest of the circuit.  Stages 2 and 3 are where all the distortion comes from via the clipping diodes.  after that is the tone stack. This allows you to bleed treble or bass off to ground.  because so much signal is lost to ground in the tone stack, the last transistor stage is a gain recovery stage to bring the output level up.

I know that isn't exactly what your looking for but I hope it helps

[Papa_lazerous]

I can try the short and simple,  Stage 1 is a basic amplifying stage, a booster essentially.   Next is the gain control,The pot controls the amount of signal that will go to the rest of the circuit.  Stages 2 and 3 are where all the distortion comes from via the clipping diodes.  after that is the tone stack. This allows you to bleed treble or bass off to ground.  because so much signal is lost to ground in the tone stack, the last transistor stage is a gain recovery stage to bring the output level up.

I know that isn't exactly what your looking for but I hope it helps

Thanks fella, I kinda knew that much but it was good of you to help out 

[Papa_lazerous]

http://muzique.com/ebook.htm

I bought it, its good.  It has a lot of variations in addition to the analysis you're looking for.  There's a lot here too.

Thanks for the link I may look into it but I am sometimes wary of buying things like that if I cant see them first.  Could just be buying rubbish

if it was rubbish,
1. it wouldnt be for sale
2. we wouldnt purchase it

You could well have a valid point there!

I may invest who knows I may be amazed at what I learn.  I have just got round the the thinking that ts simply not enough to clone, I want/need to fully understand things properly not just have a vague idea.  Kinda makes things more interesting

EDIT: I just had a proper look and figured it was easier to get the AMZ CD seeing how it has so much on it. Plus its only $26 I am in the UK  Through paypal it works out at £13.72  thats less than what I earn an hour so it has got to be worth a punt.  I'll let you all know what I think when it turns up