Enclosure not stated · 5 knobs
Smallsound / Bigsound F*ck OverdriveVerified
Based on the Smallsound/Bigsound Fuck Overdrive· 3 other boards clone it
From the post
This one has been on many peoples list for years... Traced by Deadend Fx and the schematic is avaiable HERE. A "Sag Depth" pot is the only mod but if you want to build it as the original, just replace the pot with a 1,5k resistor. Verified by Tom.
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 37 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×5 | 1K | 1k | read from the layout by eye | |
| ×3 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| Capacitors 8 | ||||
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | J201 | J201 | JFET; J201 or PF5102; read from the layout by eye | |
| Q2 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q3 | J201 | J201 | JFET; J201 or PF5102; read from the layout by eye | |
| Q4 | 2N5089 | 2N5089 | read from the layout by eye | |
| Q5 | 2N5089 | 2N5089 | read from the layout by eye | |
| Q6 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Drive | A100K | A100k | Potentiometer | dual; read from the layout by eye |
| Hi Cut | B10K | B10k | Potentiometer | read from the layout by eye |
| Threshold | B10K | B10k | Potentiometer | read from the layout by eye |
| Sag Depth | B5K | B5k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
| Switches 3 | ||||
| Sag Mode Sw | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
| Sag Ftsw | SPST momentary | SPST MOMENTARY | footswitch; read from the layout by eye | |
| Light/Heavy Sw | SPST on/on | SPST ON/ON | toggle; read from the layout by eye | |
| LEDs 2 | ||||
| D1 | 3mm yellow LED | 3MM YELLOW LED | on the board; read from the layout by eye | |
| Env. Ind. LED | Red diffused LED | RED DIFFUSED LED | off-board; read from the layout by eye | |
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