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PROJECT NAME
ASTRA
BASED ON
Astrotone Fuzz
EFFECT TYPE
Silicon fuzz
PROJECT SUMMARY
An early silicon fuzz from 1966 that was also sold as the Sam Ash Fuzzz Boxx. One of the first drive
circuits to include a tone control.
Actual size is 2.3" x 1.86" (main board) and 1.78" x 0.86" (bypass board).
ASTRA SILICON FUZZ
BUILD DIFFICULTY
Beginner
DOCUMENT VERSION
1.0.1 (2021-04-27)
1
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Table of Contents
Related Manuals for aion ASTRA SILICON FUZZ
Summary of Contents for aion ASTRA SILICON FUZZ
- Page 1 An early silicon fuzz from 1966 that was also sold as the Sam Ash Fuzzz Boxx. One of the first drive circuits to include a tone control. Actual size is 2.3” x 1.86” (main board) and 1.78” x 0.86” (bypass board). ASTRA SILICON FUZZ...
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Page 2: Table Of Contents
10 Document Revisions INTRODUCTION The Astra Silicon Fuzz is a clone of the Astrotone Fuzz, also released as the Sam Ash Fuzzz Boxx (yes, there are three Z’s and two X’s!). It was manufactured by the Universal Amplifier Company in New York City from 1966-1968. -
Page 3: Parts List
Can also use 3mm LEDs. LED, 5mm, red diffused Can also use 3mm LEDs. 2N3904 BJT transistor, NPN, TO-92 Original uses 2N3565. 2N3904 is an exact substitute. 2N3904 BJT transistor, NPN, TO-92 Original uses 2N3565. 2N3904 is an exact substitute. ASTRA SILICON FUZZ... - Page 4 DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. BATT Battery snap 9V battery snap Optional. Use the soft plastic type—the hard-shell type will not fit. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. ASTRA SILICON FUZZ...
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Page 5: Build Notes
Even if you stick with the original vintage circuit, you may find it worthwhile to use Analogman’s tone control modification, which reduces R6 to 470R. All the tones of the original unit are still present except at the very extreme end of the range. ASTRA SILICON FUZZ... -
Page 6: Schematic
SCHEMATIC 100R 1N5817 100uF 100n 2N3565 2N3565 ASTRA SILICON FUZZ... -
Page 7: Drill Template
LEVEL ATTACK x: -0.65, y: +1.71 x: 0.65, y: +1.71 ø9/32” ø9/32” TONE CLIP x: 0, y: +0.66 x: +0.85, y: +0.66 ø9/32” ø1/4” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.20 x: 0, y: -1.20 ø5/16” ø15/32” ASTRA SILICON FUZZ... -
Page 8: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B ASTRA SILICON FUZZ... -
Page 9: Wiring Diagram
GND +V +V JACK GND JACK GND GND PCB 125B Shown with optional 9V battery. If battery is omitted, both jacks can be mono rather than one being stereo. Leave the far-right lug of the DC jack unconnected. ASTRA SILICON FUZZ... -
Page 10: Document Revisions
The guitar effects industry needs more transparency, not less!) DOCUMENT REVISIONS 1.0.1 (2021-04-27) Removed RPD from parts list which was included by mistake. The schematic and Mouser spreadsheet were correct. 1.0.0 (2021-03-19) Initial release. ASTRA SILICON FUZZ...
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