Stupid Pedal Trick: Photon Face (a si fuzzface that don't..)

Stompboxes circuits published in magazines, books or on DIY electronics websites.
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pinkjimiphoton
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my favorite amplifier: my own, a redesigned princeton
Completed builds: so fucking many goddamn pedals it would make your ass hurt just looking at 'em all!!!!!
there's videos that totally suck of about 90 of 'em here:
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Post by pinkjimiphoton »

,,,,,suck, model b... the more standard fuzzface... but si instead of ge...

the full-gospel si fuzzface. mods detailed. output pot 100k, output cap .047uF
e to ground q1, 220r e to "top" of fuzz pot q2, 47r, 100r between fuzz pot and ground

fat and philthy, and cleans up just like the ge ones and responds pretty much the same as well. couple extra parts and huge diff.

any npn's will work. i use 'em around 215hFE/.650ma

if ya use say, 450hfe, double up the e resistors. you'll have to play with the bias probably to keep the tone right tho.
this is bone stock other than the changes detailed.

"When the power of love overcomes the love of power the world will know peace."
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lcv
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Post by lcv »

I fell in love with it's sound, so I built it on a vero, now sharing.
Includes PSU from PJP's Schizoid schem.
Photon01.png
20170325_160550_3.jpg

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pinkjimiphoton
Transistor Tuner
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Posts: 1242
Joined: 12 Sep 2010, 19:03
my favorite amplifier: my own, a redesigned princeton
Completed builds: so fucking many goddamn pedals it would make your ass hurt just looking at 'em all!!!!!
there's videos that totally suck of about 90 of 'em here:
http://youtube.com/666pinkster
gimme a like: http://facebook.com/pinkjimiphotonrocks
Location: new world order land (formerly la-la land)
Has thanked: 358 times
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Post by pinkjimiphoton »

nice job, beautiful layout!

that said, i ditch the snubber caps in mine. they take too much "edge" away imho. some transistors DO sound better with them, but not the ones i'm using.

i just revised the project to version 1.4, including all the in/out switching, effects switching, the led's etc... will post it soon as i can up load it.

i'm telling you, them fuckin videos don't do it justice. so far every one who has tried the actual schizoid face live has bought one. in some cases TWO. i can't seem to keep enough of them around. i HAVE used it live on a couple occaisons now, and can absolutely replace my germanium with it with no issues at all. less noise, less hiss, and dependable regardless of temperature.

you should really try it. i can guarantee you will be surprised. it sounds/works WAYYYYYY better than the videos can show it to be. also useful for hot muddy humbuckers, gives a real nice "edge".

the final (ha!) revision includes the led's. it's a happy/sad face. in sad mode (stupid face) the two eyes on the smiley light blue. in happy mode (photon face) they light green.
in bypass, all 4 light up red. cuz i'm an unabashed stoner ;)

just the blue leds for stupid, just green for photon.

use rgb's, common ANODE... then you only need one CLR per led pair. 27k seemed about the best for the CLR.
the rgb's at tayda go from left to right, with anode being longest, red, anode, green, blue


the basic graphic looks like this:

:[/color]

people advised to add anti pop resistors, but they really aren't necessary other than one. take it right from the footswitch where it goes to board in to ground. that's it. the other stuff is sufficiently isolated to not cause popping issues. i reccomend 4.7m. works perfect

a pair of 3pdt footswitches allows not only true bypass, but also the light show aspect for the graphic. the layout i'm about to post shows how to do it.

i use 9mm alphas. 1k audio for fuzz, 250k linear for volume.


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"When the power of love overcomes the love of power the world will know peace."
Slava Ukraini!

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