Si fuzz face troubles

[philbinator1]

Hi all

i'm building the silicon fuzz face and have a few diagram-related questions:



which tabs are which on the input and output jacks, eg tip/sleeve/ring?

and, R4 looks like it goes straight over a hole/break on the pcb...is that correct?

and lastly...how would i transfer this diagrams' switch to the 3PDT that i have, with a LED included?


thanks for your time, if you spend it   

[CynicalMan]

which tabs are which on the input and output jacks, eg tip/sleeve/ring?

The green wire is sleeve, the black wire is ring, and the pink wire is tip.

and, R4 looks like it goes straight over a hole/break on the pcb...is that correct?

Yes, it goes over a track cut in the vero, which is on the underside.

and lastly...how would i transfer this diagrams' switch to the 3PDT that i have, with a LED included?

http://www.generalguitargadgets.com/diagrams/switch_lo_3pdt_tb_battery.gif

[Scruffie]

Dunno if it's any interest but I just made a layout up for a Silicon Fuzz Face on vero with Onboard Pots if that's your thing.
Same answers as CynicalMan gave apply to your questions on it.

[nocentelli]

Shouldn't the Q2 base be connected to Q1's emitter?

[Scruffie]

Shouldn't the Q2 base be connected to Q1's emitter?

No... but Q2s Base should be connected to Q1s Collector, That'll have been when I moved Q2 back I forgot to reconnect it, So yeah there needs to be a jumper from Row D, 17 to Row F,17
Thanks for spotting that.

[nocentelli]

Collecter, emitter... what's the difference?

Thanks for the layout - I've been looking for a fuzzface with onboard pots for a while now.

[Scruffie]

  No Problem, i've got some other vero layouts with onboard pots too if anyones interested.
(Dallas Rangemaster, Bazz Fuss, Tone Bender MkII, Fuzz Face etc.)

[nocentelli]

Tone Bender MkII

Yes please!

This is the only one I've managed, a two-knob Big Muff/Jumbo tonebender-type fuzz (perf, not vero though):

[Scruffie]

Tone Bender MkII

Yes please!

This is the only one I've managed, a two-knob Big Muff/Jumbo tonebender-type fuzz (perf, not vero though):

Here ya go, stuck them all in a single thread http://www.diystompboxes.com/smfforum/index.php?topic=83254.msg691533#msg691533

[philbinator1]

Thanks Alex, perfect!  Oh and, it's negative power supply, right?  how can someone tell if it's negative or positive?  Is that
what they call PNP and NPN?  or is that just transistors.   

[CynicalMan]

Thanks Alex, perfect!  Oh and, it's negative power supply, right?  how can someone tell if it's negative or positive?  Is that
what they call PNP and NPN?  or is that just transistors.   

It is negative ground, positive power supply. PNP and NPN only refer to the construction of the transistors. That being said, positive ground is sometimes required in fuzz pedals that use PNP transistors. It is never used in fuzz pedals using NPN transistors, which the BC108s are.

[scott_v]

Tone Bender MkII

Yes please!

This is the only one I've managed, a two-knob Big Muff/Jumbo tonebender-type fuzz (perf, not vero though):

Don't want to hijack the thread but i'm interested in this Big Muff/Tonebender layout though it appears that the both 100k pots should be audio taper (like in the actual Big Muff?) and not Linear? also is this layout confirmed? thinking about giving it a shot on my table, but using different med-high transistors (BC184's are pretty high gain) like 2N5088's er similar and not using the emitter to ground resistors (to keep the gain intact?) this layout looks good to me!

[scott_v]

Tone Bender MkII

Yes please!

This is the only one I've managed, a two-knob Big Muff/Jumbo tonebender-type fuzz (perf, not vero though):

Don't want to hijack the thread but i'm interested in this Big Muff/Tonebender layout though it appears that the both 100k pots should be audio taper (like in the actual Big Muff?) and not Linear? also is this layout confirmed? thinking about giving it a shot on my table, but using different med-high transistors (BC184's are pretty high gain) like 2N5088's er similar and not using the emitter to ground resistors (for a lower part count and to keep the gain intact?) this layout looks good to me!

[scott_v]

sorry repost...

[nocentelli]

Don't want to hijack the thread but i'm interested in this Big Muff/Tonebender layout though it appears that the both 100k pots should be audio taper (like in the actual Big Muff?) and not Linear? also is this layout confirmed?

Yeah, pots should be log not lin - My bad. I haven't made the perf version above yet, i.e. it's not guaranteed verified, but I have made this vero prototype below and it works great, I'm pretty sure it's the same:



On the transistor issue, I don't really understand the logic in eschewing BC184cs for being too high gain, then removing the emitter resistors to jack the gain back up again? I have read that the Big Muff's gain characteristics is entirely dependent on the collector/emitter resistor ratio, so transistor type would make little difference... Please help me out. Btw, are you planning to go direct to ground, or through caps?

[scott_v]

i was thinking direct to ground i believe thats essentially my thinking when i've read about the "creamy dreamer" mods where this resistor is removed and then jumpered to ground.  i've also finding that yes the transistors used here don't make very much of a difference.