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PROJECT NAME
NYSIAD
BASED ON
Cornish NG-3
EFFECT TYPE
Misbiased silicon fuzz
PROJECT SUMMARY
A variable-bias silicon fuzz designed to emulate "imminent amp death", the sound of a blown power tube
or output transformer right before it all goes up in smoke.
Actual size is 2.3" x 2.43" (main board) and 2.3" x 0.87" (bypass board).
NYSIAD SILICON FUZZ
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
2.0.0 (2023-10-06)
1
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Summary of Contents for aion NYSIAD Silicon Fuzz
- Page 1 A variable-bias silicon fuzz designed to emulate “imminent amp death”, the sound of a blown power tube or output transformer right before it all goes up in smoke. Actual size is 2.3” x 2.43” (main board) and 2.3” x 0.87” (bypass board). NYSIAD SILICON FUZZ...
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Page 2: Table Of Contents
8 Schematic INTRODUCTION The Nysiad Silicon Fuzz is adapted from the Cornish NG-3, first released in 2010 as the successor to the NG-2 and N.G. Fuzz, both favorites of Lou Reed who owned several of each, and also used by John Mayer on his version of Crossroads. - Page 3 The noise floor will be amplified a great deal at higher Drive and Sustain levels, so if you have single-coil pickups, you’ll have better luck with one of the noise-canceling positions. This is less of an issue as Bias is turned down since there’s a noise-gating effect when nothing is being played. NYSIAD SILICON FUZZ...
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Page 4: Parts List
Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W 330k Metal film resistor, 1/4W 100k Metal film resistor, 1/4W 120k Metal film resistor, 1/4W 120k Metal film resistor, 1/4W 200k Metal film resistor, 1/4W NYSIAD SILICON FUZZ... - Page 5 Electrolytic capacitor, 6.3mm Power supply filter capacitor. 220uF Electrolytic capacitor, 6.3mm Power supply filter capacitor. 220uF Electrolytic capacitor, 6.3mm Power supply filter capacitor. 100n MLCC capacitor, X7R Power supply filter capacitor. 1N5817 Schottky diode, DO-41 1N914 Fast-switching diode, DO-35 NYSIAD SILICON FUZZ...
- Page 6 Switchcraft 111X or equivalent. 1/4" mono 1/4" phone jack, closed frame Switchcraft 111X or equivalent. 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. NYSIAD SILICON FUZZ...
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Page 7: Build Notes
(A = 0.1%, B = 0.2%, C = 0.5%, or D = 1%) is unimportant, so you can substitute whichever type is easiest to find as long as it’s 5.0V. The traced NG-3 used the LM4040DIZ-5.0, which is the cheapest type, but the CIZ has been used in the Cornish OC-1. NYSIAD SILICON FUZZ... -
Page 8: Schematic
SW1C TO INPUT JACK SW1A 1N5817 100n 150R FROM EFFECT OUT 220uF 220uF 220uF 220uF SW1B SW1D TO OUTPUT JACK BUFFER OUT BC549C 4.7uF TL071CP 220n BC549C 100pF 22uF DRIVE 100kA BIAS 100kB 220n BC549C 330k BC549C NYSIAD SILICON FUZZ... -
Page 9: Drill Template
-0.775, y: +1.71 x: -0.775, y: +1.71 x: +0.775, y: +1.71 ø9/32” ø9/32” ø9/32” VOLUME DRIVE x: -0.775, y: +0.41 x: +0.775, y: +0.41 ø9/32” ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.775 x: 0, y: -1.775 ø5/16” ø15/32” NYSIAD SILICON FUZZ... -
Page 10: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B NYSIAD SILICON FUZZ... -
Page 11: Wiring Diagram
WIRING DIAGRAM NC BUF FX GND +V +V JACK GND JACK GND BUF 125B NYSIAD SILICON FUZZ... -
Page 12: Document Revisions
Changed R7 to 10k and added information on this change to the build notes section. 1.0.2 (2023-08-04) Changed R39 to 51k and added information on this change to the build notes section. 1.0.1 (2020-04-06) Added notes about resistors in first transistor stage (R18 and R19). 1.0.0 (2019-03-14) Initial release. NYSIAD SILICON FUZZ...
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