Enclosure not stated · 7 knobs
BAJA Mars Hall 1959 Plexi
Based on the BAJA Mars Hall 1959 Plexi· 1 other board clones it
- Category
- Preamp / Amp-in-a-box
- Build
- Vero· 21×27· 29 cuts, 20 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Amp Emulator, BAJA, DIY Designs, Marshall
From the post
Shematic and info HERE
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 44 rows
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Check before you build · 1 value the reader of this layout was not sure of
- Volume B1M pot: named only in the legend, no Volume/Master wire label on the board, so it is unclear which control it is (legend also says 'Master 2 to Output')
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×4 | 2.7K | 2.7k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×2 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×1 | 120Ω | 120 | read from the layout by eye | |
| ×1 | 1.5M | 1.5M | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| ×1 | 1.8K | 1.8k | read from the layout by eye | |
| ×1 | 1.2K | 1.2k | read from the layout by eye | |
| Capacitors 12 | ||||
| ×5 | 1uF | 1u | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 560nF | 560n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×2 | 1nF | 1n | read from the layout by eye | |
| ×1 | 680nF | 680n | read from the layout by eye | |
| ×1 | 12nF | 12n | read from the layout by eye | |
| ×1 | 1.8nF | 1.8n | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 560pF | 560p | read from the layout by eye | |
| Diodes 6 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| D4 | 1N4148 | 1N4148 | read from the layout by eye | |
| D5 | 1N4148 | 1N4148 | read from the layout by eye | |
| D6 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2SK117 | 2SK117 | JFET; read from the layout by eye | |
| ICs 3 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | TL062 | TL062 | read from the layout by eye | |
| IC3 | TL062 | TL062 | read from the layout by eye | |
| Potentiometers 7 | ||||
| Bass | B50K | B50k | Potentiometer | read from the layout by eye |
| Treble | B10K | B10k | Potentiometer | read from the layout by eye |
| Presence | B10K | B10k | Potentiometer | read from the layout by eye |
| Mid | B1K | B1k | Potentiometer | read from the layout by eye |
| Volume | B1M | B1M | Potentiometer | named in the legend only; read from the layout by eye |
| Gain | B100K | B100k | Potentiometer | read from the layout by eye |
| Level | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Bright/Normal | SPST | SPST | toggle; read from the layout by eye | |
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