Enclosure not stated · 1 knob
Blackhawk Amplifiers Gandalf Octave FuzzVerified
Based on the Blackhawk Amplifiers Gandalf Octave Fuzz
From the post
Traced by evilarsen. A great sounding octave up fuzz which has an op amp slamming a transformer and two diodes just like in an old Octavia. The transformer listed is 42TL022 but the more recent version has a different unknown part number which is supposed to work even better. A wild guess would be 42TL002? More info at Blackhawk Amplifiers.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 15 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 3 | ||||
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 33nF | 33n | read from the layout by eye | |
| ×1 | 33uF | 33u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| C6 | 33pF | 33p | external compensation cap, only for LM308; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | Germanium | GERMANIUM | D1, D2; Germanium or Schottky; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM741 | LM741 | LM741 or LM308N; read from the layout by eye | |
| Transformers 1 | ||||
| TR1 | 42TL022 | 42TL022 | read from the layout by eye | |
| Potentiometers 1 | ||||
| Volume | B100K | B100k | Potentiometer | dual; read from the layout by eye |
| Trimmers 2 | ||||
| Blend | 100K | 100k | on board; read from the layout by eye | |
| Tone | 10K | 10k | on board; read from the layout by eye | |