How to add more volume to a Fuzz Face?

[carrejans]

I have a positive ground fuzz face, with OC44's. It sounds good; but it needs more volume.
When I turn up the volume pot to max, then the volume is around unity gain.
- Is this normal?
- Is there a way to increase the volume of the fuzz face?

Here is my layout:

[Ripdivot]

If your "R4" is 330 or 470 ohms you can try changing it to a 1K ohm resistor. This is similar to the contour control in the Fulltone 69 pedal, it will give you more volume but it will change the fuzz characteristics slightly...

[R.G.]

Think about R4 and R5 being a potentiometer...

[bwanasonic]

As for "normal", I can't say, but in my experience with the volume pot cranked on a fuzz face, I think the technical term is "freakin' LOUD".  Certainly nothing that could be mistaken for unity gain. At least not at moderate stage volumes with a medium power tube amp. My experience is limited to a pretty small sample size however.

[Ripdivot]

I find with a strat it goes above unity gain but with a les paul it doesn't.

[petemoore]

  R4 and R5 form a resistive volage divider...how the voltage is proportioned depends on the values of these resistors...make R4 a little bigger and the division of the signal will be altered, more will be fed to the output.
   But a ''generally specific'' debug check to see how the DC bias etc. is set up would be a good 'pretest' because the FF 'should' put out a greatly amplified version of the input source.

[carrejans]

Thanks for the replies guys.


A friend of mine asked if I had a fuzzface, that he could use. I remember, I built one some time ago. I remembered that the volume was lacking. For that reason my question.
Today I actually tested this pedal again. And to my surprise it had enough volume. 
Now I remember what was "wrong" with it:

When the volume pot is at half, there is not enough volume for me. (with most modern pedals that I use, putting the volume in half is good for me)
So I have to put the volume pot at about 3/4. No problem, so far at my home.
But when I play at a higher volume on my amp, at rehearsals/gigs, the fuzz face starts to squeel like hell.


How can I best solve this problem?

Thanks...

carrejans

[LucifersTrip]

But when I play at a higher volume on my amp, at rehearsals/gigs, the fuzz face starts to squeel like hell.


How can I best solve this problem?

Thanks...

carrejans

possibly, the standard 50-200pf cap across Q1 and/or Q2's B-C