Enclosure not stated · 3 knobs
Fairfield Circuitry Barbershop OverdriveVerified
Based on the Fairfield Circuitry Barbershop· 6 other boards clone it
From the post
This one was a request. Two pots onboard and one offboard. The Barbershop Overdrive is a transparent overdrive/booster with medium gain. It has the expected Volume and Drive controls, but also has a Sag control which alters the voltage the pedal is running at. This can change the color and compression of the tone.
UPDATE:
I did a little research, and found out Q4 is just a fancy way of doing polarity protection and can be omitted if you want. Here's a layout without it.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×3 | 2M | 2M | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 9.1K | 9.1k | read from the layout by eye | |
| ×1 | 8.2K | 8.2k | read from the layout by eye | |
| ×1 | 47Ω | 47 | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 15V Zener | 15V | read from the layout by eye | |
| Transistors 4 | ||||
| Q1 | J201 | J201 | JFET; read from the layout by eye | |
| Q2 | J201 | J201 | JFET; read from the layout by eye | |
| Q3 | 2N2222 | 2N2222 | read from the layout by eye | |
| Q4 | VP3203 | VP3203 | MOSFET; read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | A100K | A100k | Potentiometer | read from the layout by eye |
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |
| Sag | B10K | B10k | Potentiometer | read from the layout by eye |
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