Fuzz Face pot value question

[Curly]

(yes, I did a search ...)

What effect would lowering the volume pot from the stock 500k to 100K, and raising the fuzz pot from stock 1k to say 2k - 10k have?

I'm looking for a wider sweet spot on the volume and fuzz pots.

[biggy boy]

I wouldn't mind knowing also.
I just finnished putting components on a fuzz face board and plan to use a 10k pot for the fuzz.
I'm doing this because I don't have a 1k pot!

This is the one I'm making
http://www.aronnelson.com/gallery/main.php/v/DRAGONFLY-LAYOUTS_0/album18/FUZZ+PCB/VINTAGE+STYLE+FUZZ+FACE+-+SILICON_001.GIF.html?g2_imageViewsIndex=1

[frequencycentral]

Using a 100K for the volume pot will reduce the overall output level compared to using a 500K. Not sure what changing the 1K will do though.

[Derringer]

it will definitely affect your bias resistors

at the lowest setting, you'll have less gain than you would with a 1K pot
at the highest setting you'll have equal gain to the 1K pot


worth messing with as long as you compensate your collector resistor

[biggy boy]

it will definitely affect your bias resistors

at the lowest setting, you'll have less gain than you would with a 1K pot
at the highest setting you'll have equal gain to the 1K pot


worth messing with as long as you compensate your collector resistor

Ya I noticed at full gain the sound was good. But If I rolled back the gain just a tiny tiny bit no fuzz, too clean. This is with a 10K gain pot.

I've been reading R.G.'s transistor trouble shooting page and trying to learn, so much to learn bit by bit......
www.geofex.com/fxdebug/fxdebug.htm

[smallbearelec]

Years back, some of us found that audio taper for the fuzz pot "opened up" the control and made it much more precise. But the direction of control was wrong--greatest distortion was at the counterclockwise end. I did the obvious at the time and had Alpha make a 1K reverse audio pot. It's SKU 1007 in my Stock List. While I can't say that it has become a "standard," it has made a lot of people happy.

Regards
SD

[biggy boy]

Thanks Steve!

I was also reading at R.G.'s site that reducing the volume pot from 500k to a lower value will make it sound brighter.

[Gus]

http://www.diystompboxes.com/pedals/gusFuzzFace.gif

google texas square face or the vox 2 transistor fuzz or...

[Curly]

thanks, Steve

I placed an order for those.

I did the obvious at the time and had Alpha make a 1K reverse audio pot.  While I can't say that it has become a "standard," it has made a lot of people happy.

[biggy boy]

Found a 5k trim pot and hooked it up, sounds better not as blotty.
I them pluged it into a GusBoost (thanks Gus!) and the two together sound great!!! tons of volum with the boost.