fuzz face muffled until volume is almost peged

[ultran8]

so i just got my dallis arbiter fuzz face i changed my caps to get rid of sum of the muddiness away from it but then i noticed the last bit on volume know gets me the brightness i want from it . but then im rockn my hot rod deluxe hard compared to the levels on the rest of my pedals should i change the volume pot from 500k to 1M . maybe it will roll off earlier or should i change resistances on q1. i used aronnelson schematic i also built a fuzz factory and its perfect. any thoughts of which way to go.

[MmmPedals]

I believe a smaller pot would make it brighter.

[blooze_man]

Pop a 500k resistor on the ground lug of the pot. This will basically give you a 1meg pot, but you will only be able to turn it down halfway

like this: i hope it comes out ok

-----/\/\/\/\------/\/\/\/\---------gnd
          |
          |

[ultran8]

so like a 250k or 100 or how bout a 25k . i guess ill fool around with it .

[ultran8]

which way do i go to get more bright from less voume

[LucifersTrip]

so like a 250k or 100 or how bout a 25k . i guess ill fool around with it .

Put at another 1m pot across the outer lugs of the 1m volume pot and slowly turn it down while experimenting with the volume pot.
That way you can try 500k to 0K with ease. The sweep won't be the same but you'll get an idea of how large a vol pot you want.

[zombiwoof]

I think what you're hearing is the same treble roll-off problem that people have with guitar tone controls, when you turn the volume down from full up you lose treble.  On guitars, this is sometimes fixed with a treble bypass cap, and I noticed when I looked at the schematic for the Roger Mayer Classic Fuzz (which used to be on the GEO "technology of the FF" page, but was later removed), that Mayer does the same thing , he puts a .002uf cap across two lugs of the volume pot to help with the treble loss as you turn it down.  I think it goes between the lug carrying the input wire from the circuit and the wiper (middle lug), as I recall.  I tried it on my modded FF and it worked for me.  Try it and see if it helps.  You can experiment with different cap values just as you do with a guitar treble bypass.  I think I used .001, because that's what I had around at the time, but I remember Mayer using an .002uf cap.

I've never seen anyone mention this in the discussions of Fuzz Faces, it's just something I noticed in the Classic Fuzz schematic, and I immediately understood why it was there.

Al

[petemoore]

  don't assume this is it:
  With large value volume control, very soon when turning it down from 10, a large value resistance is introduced to the signal path.
  It can have the effect of rolling off and rolling off highs more than lows.
  Simple fixes include:
  Use 100k volume pot...compared to 1m, makes the pedal not quite as loud or bright when set all the way to 10, but when it gets set to 8, there's not a huge resistance: 100k or 200k [w/a 1m] that the signal is faced with, more like 10k or 20k.
  Put a dinky treble bleed resistor across the R discussed above [ie the signal path lugs of the volume pot], that way when the signal is looking at a large resistance, it's only looking at a small resistance for HF's because the leetle capacitor provides a path of low impedance to HF's.

[ultran8]

hmmmmmmmmmmmm ill try a lil of that all im very interested about the treble bleed resistor thing.

this is this layout i used kinda got confused on the resistor thing . how would u lay it out thanks
Uploaded with ImageShack.us

[twabelljr]

Treble bleed capacitor. Don't worry about the layout, just solder it to the lugs of the volume pot. The lugs with the orange and the blue wires in your image.

[ultran8]

that did it aaaaaaaaahhhhhhhhhhhh sweeeeeettttt fuzz !thanks everybody