IC diode fuzz

[Gus]

Here is a schematic of an IC diode clipping fuzz(it is missing power supply connections to the IC
look close there are a few things that make a difference
This is a refinement of of something I built in the mid 90's

[Mark Hammer]

Any particular advantage to making C1 that large a value?  That's a biggun.

But, caps aside, that'll fuzz up real nice. 

[DrAlx]

I assume the power supply connections to the IC are +9V and -9V.  Correct?

[Gus]

Power is +9VDC

If you look at the diode section note how the diodes are orientated the wire at the D1,2,3,4 node can become a resistor or one can use a diode there and get 3 diode drops both ways with 5 diodes

R6 is a 100 gain control (0 to 100K) if you use a 100K and a series 1K the min gain is (1+ 1000/220)

In the book "Audio IC Op-Amp Applications" read the section about the LF356

The input RC (R1,C3) is a good highpass/loading for guitar into a IC based fuzz to my ears/brain.

As always you can adjust values. 
IMO This is a good starting point for a IC based fuzz

[DrAlx]

Oops. I misread the schematic. I thought the bias was at ground instead of 1/2 supply.

[Gus]

The circuit sounds good, don't think just another IC fuzz.
The IC matters

[pinkjimiphoton]

looks a lot like a couple of my designs. almost verbatim.

stupid simple overdrive as an example. i forget what the second version of that was called, but the clipper and voltage dividers etc were real similar,
also similar to a blue clipper. in mine, it uses a ge transistor as a clipper in the feedback path.

looks neat. nice job, gus!

[Mark Hammer]

The circuit sounds good, don't think just another IC fuzz.
The IC matters

Okay, now you have my attention.  356 and NOT 351 or 1/2 a 353?  If so, why?

[Gus]

Found my copy of the book ISBN 0-672-21558-6
page 67 plot
and read page 75.

I like this circuit, it is textbook but it sounds good