fuzz face low cut switch

[george79]

Hello to the community
I have build one bear face germanium for a friend with tone control.He asked me if i can fit one low cut switch for extra control.keep the mid and highs without touch the tone but just cut the low with a switch.
any ideas how to do that??

[nocentelli]

Switching the input cap for a lower value (like 47n) will cut bass, but might also seem like it lowers the maximum gain a little.

[Electric Warrior]

Better yet: switch the output cap for a 0.002µF. That will cut the bass around 160Hz (like in a Tone Bender MK1.5) instead of 30Hz.

[george79]

its the fur face fuzz ith the tone control  here a link  http://diy.smallbearelec.com/Projects/FurFace/FurFace.htm
so,what cap do you suggest to change?i want just to make it work with a switch something like low-cut.not always low-cutted.

[george79]

anyone here listen please?

[Jmsteele187]

You can put your input cap (most likely 2.2uf electrolytic) on one side of a dpdt switch, and a smaller value cap (I've used .047uf) on the other side.  On the center lugs of the switch, run your input and output wires, and run them to the pcb.  Make sure you the polarity oriented correctly.  You can try different values of cap till you find the right tone.

[GGBB]

You can put your input cap (most likely 2.2uf electrolytic) on one side of a dpdt switch, and a smaller value cap (I've used .047uf) on the other side.  On the center lugs of the switch, run your input and output wires, and run them to the pcb.  Make sure you the polarity oriented correctly.  You can try different values of cap till you find the right tone.

It is easier (and technically better for reasons of switching) to simply connect two input caps in series and short out the smaller one using a single pole switch to make the bigger one active (and vice-versa - but if there is a large difference between the two cap values, the two in series will be very close to the same value as the smaller one).

On the fur face, the input cap is the 2.2µF. The output cap is the .022µF. While either one will affect bass, they do so very differently - so neither is better - it just depends on what you want. Using a smaller input cap will change the character of the fuzz making it less loose/wooly sounding. Using a smaller output cap will simply filter out bass.

Another option is the 22µF emitter bypass cap. Using a smaller cap here will lower the gain for the bass frequencies so that as you turn up the fuzz, you have less and less bass gain in comparison to the higher frequencies. Again - a different sound option.

Experiment with all three as well as the cap value to figure out what works best for you.