Enclosure not stated · 3 knobs
Fairfield Circuitry Barbershop Millenium (maybe...)Verified
Based on the Fairfield Circuitry Barbershop Millenium (maybe...)
From the post
Per request. Note that the values for the treble cut capacitors is nor confirmed (10nF and 22nF) so it might be worth socketing these values. Also, I replaced the Drain resistors with trimpots for easier biasing for the J FETs.
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 22 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×1 | 47Ω | 47 | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×2 | 2M | 2M | read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | 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 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | J201 | J201 | JFET; read from the layout by eye | |
| Q2 | J201 | J201 | JFET; read from the layout by eye | |
| Q3 | PN2222 | PN2222 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | A100K | A100k | Potentiometer | read from the layout by eye |
| Sag | B10K | B10k | Potentiometer | read from the layout by eye |
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |
| Trimmers 2 | ||||
| ×1 | 20K | 20k | printed (8,2K): set to 8.2K; read from the layout by eye | |
| ×1 | 20K | 20k | printed (9,1K): set to 9.1K; read from the layout by eye | |
| Switches 1 | ||||
| Switch | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |