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Wolfshirt2020
FX TYPE: Octave Fuzz
Based on the Foxx® Tone Machine™
Enclosure Size: 1590B, 1590B2, 125B
"Softie" compatibility: Softie1&2
© 2020
madbeanpedals
I've said more than once that the Foxx Tone Machine is my favorite fuzz/octave pedal. I think I've said
the same thing about the Tychobrahe Octavia. I've come to accept that both statements are true :)
If the Octavia (mbp Retrograde) is the classic, Hendrix style oct-up fuzz, then the Tone Machine
(Wolfshirt) is its unruly cousin; the one that has a few too many at family gatherings and then
proceeds to mortify everyone. The fuzz is thicker and the octave up is more prominent. Basically, a bit
of a face melter.
As with all analog octave up generators, the Wolfshirt is monophonic. It doesn't do chords well at
all with all kinds of odd harmonics taking over. But, for lead and single note playing it cuts through
exceedingly well. The Wolfshirt also includes a switch to defeat the octave up for fuzz only and
replaces the coupling electrolytic caps in the audio path with 1uF film caps. For mojo.
http://www.effectsdatabase.com/model/foxx/tonemachine#info
VOL: Total output.
SUS: Fuzz amount.
TONE: Low pass filter.
OCT : Left: fuzz only. Right: fuzz + octave.
Terms of Use:
You are free to use purchased Wolfshirt2020 circuit boards for both DIY and small commercial operations. You may not
offer Wolfshirt2020 PCBs for resale or as part of a "kit" in a commercial fashion. Peer to peer re-sale is fine, though.
Technical assistance
for your build(s) is available via the
assistance on builds. This is because (1) I'm not always available to respond via email in a timely and continuous manner, and (2)
posting technical problems and solutions in the forum creates a record from which other members may benefit.
Overview
Controls
madbeanpedals
forum. Please go there rather than emailing me for

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Summary of Contents for madbeanpedals Wolfshirt2020

  • Page 1 You are free to use purchased Wolfshirt2020 circuit boards for both DIY and small commercial operations. You may not offer Wolfshirt2020 PCBs for resale or as part of a “kit” in a commercial fashion. Peer to peer re-sale is fine, though.
  • Page 2 Wolfshirt2020 Parts madbeanpedals...
  • Page 3 Wolfshirt2020 Values madbeanpedals...
  • Page 4 Wolfshirt2020 Traces madbeanpedals...
  • Page 5 Wolfshirt2020 B.O.M. Resistors Caps Diodes 100n D1 - D4 1n34a 100n 1N4001 Transistors Q1 - Q4 2n3565 100k Switches 100k On/On Pots 100k 10uF 50kB TONE 50kB 100k 50kB 100k 220R 150k 100uF 100n 470k madbeanpedals...
  • Page 6: Shopping List

    Wolfshirt2020 Shopping List Value QTY Type Rating Carbon / Metal Film 1/4W 220R Carbon / Metal Film 1/4W Carbon / Metal Film 1/4W Carbon / Metal Film 1/4W Carbon / Metal Film 1/4W Carbon / Metal Film 1/4W Carbon / Metal Film...
  • Page 7 Wolfshirt2020 Parts Guide 2n3565 http://smallbear-electronics.mybigcommerce.com/transistor-2n3565/ 1n34a: http://smallbear-electronics.mybigcommerce.com/diode-nos-germanium/ BAT46 (1n34a alternative): http://smallbear-electronics.mybigcommerce.com/diode-schottky-bat46/ SPDT (On/On): http://smallbear-electronics.mybigcommerce.com/spdt-on-on-short-lever/ 16mm Right Angle Pots (50kB): http://smallbear-electronics.mybigcommerce.com/alpha-single-gang-16mm-right-angle-pc-mount/ 9mm Plastic Shaft (50kB): http://smallbear-electronics.mybigcommerce.com/alpha-single-gang-9mm-right-angle-pc-mount-w- knurled-plastic-shaft/ Thinline DC Jack: http://smallbear-electronics.mybigcommerce.com/dc-power-jack-all-plastic-unswitched-2-1-mm/ Enclosed Mono: http://smallbear-electronics.mybigcommerce.com/1-4-in-mono-enclosed-jack/ http://smallbear-electronics.mybigcommerce.com/1-4-in-mono-enclosed-switchcraft-111x/ Lumberg Mono: http://smallbear-electronics.mybigcommerce.com/lumberg-1-4-compact-shrouded-mono-jack/ madbeanpedals...
  • Page 8 Wolfshirt2020 Notes • While I do recommend sticking with the stock 2n3565 transistors for this build I used a transistor package that allows for different pinouts. For the 2n3565, the flattened side of the transistor is the emitter. madbeanpedals...
  • Page 9 Wiring Diagram Wolfshirt2020 madbeanpedals...
  • Page 10 Wolfshirt2020 1590B Drill Guide Note: Drill Guides are approximate and may require tweaking depending on the types of jacks, switches and pots you use. • This is a tight fit, but should work if you use the Lumberg style 1/4” jacks.
  • Page 11 Wolfshirt2020 1590B2 Drill Guide Note: Drill Guides are approximate and may require tweaking depending on the types of jacks, switches and pots you use. • Shown with Softie 2 relay bypass. If you are using one of the mbp 3pdt bypass boards, or just a 3pdt switch on its own, move the drill spot for the switch a bit lower so you can fit everything properly.
  • Page 12 Wolfshirt2020 125B Drill Guide Note: Drill Guides are approximate and may require tweaking depending on the types of jacks, switches and pots you use. • Shown with Softie 1 relay bypass. Use the same drill spot for 3PDT switch or move to your desired location.
  • Page 13 Voltages Wolfshirt2020 2n3565 2n3565 2n3565 2n3565 2.24 7.72 7.17 8.02 0.75 2.24 0.84 0.81 151mV 1.61 221mV 202mV • 9.42vDC One Spot • Current Draw ~ 3mA madbeanpedals...
  • Page 14 Build Pic Wolfshirt2020 madbeanpedals...
  • Page 15 Schematic Wolfshirt2020 madbeanpedals...