1590B · 6 knobs
Baja MDR OverdriveVerified
Based on the BAJA MDR Overdrive· 1 other board clones it
- Category
- Preamp / Amp-in-a-box
- Difficulty
- Difficult
- Build
- Vero· 23×25· 48 cuts, 23 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Amp Emulation, Baja, Distortion, MDR, Mesa, Overdrive
From the post
Bajaman's overdrive/distortion circuit based on the Mesa Dual Rectifier high gain channel with switchable tone stack.
Original thread and schematic available on the FSB forum here.
The layout should fit in a 1590B box.
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 38 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 2SK117 count: two JFET bodies found on the board (centre and bottom left); the top '2SK117' label is read as naming the centre one
- 1u film caps: 13 counted, a dense board, the count could be off by one
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| ×5 | 1K | 1k | read from the layout by eye | |
| ×2 | 1K2 | 1.2k | read from the layout by eye | |
| ×1 | 2K2 | 2.2k | read from the layout by eye | |
| ×3 | 2K7 | 2.7k | read from the layout by eye | |
| ×1 | 3K3 | 3.3k | read from the layout by eye | |
| ×1 | 3K9 | 3.9k | read from the layout by eye | |
| ×1 | 4K7 | 4.7k | read from the layout by eye | |
| ×1 | 8K2 | 8.2k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×1 | 1M5 | 1.5M | read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 180p | 180p | read from the layout by eye | |
| ×1 | 390p | 390p | read from the layout by eye | |
| ×1 | 680p | 680p | read from the layout by eye | |
| ×1 | 3n3 | 3.3n | read from the layout by eye | |
| ×1 | 3n9 | 3.9n | read from the layout by eye | |
| ×2 | 10n | 10n | read from the layout by eye | |
| ×4 | 22n | 22n | read from the layout by eye | |
| ×1 | 33n | 33n | read from the layout by eye | |
| ×13 | 1u | 1u | read from the layout by eye | |
| ×1 | 47u | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| Transistors 2 | ||||
| ×2 | 2SK117 | 2SK117 | JFET; read from the layout by eye | |
| ×1 | BC547B | BC547B | read from the layout by eye | |
| ICs 2 | ||||
| ×2 | TL062 | TL062 | read from the layout by eye | |
| ×1 | TL061 | TL061 | read from the layout by eye | |
| Potentiometers 6 | ||||
| Level | B100K | B100k | Potentiometer | read from the layout by eye |
| Gain | B100K | B100k | Potentiometer | read from the layout by eye |
| Presence | B25K | B25k | Potentiometer | read from the layout by eye |
| High | B250K | B250k | Potentiometer | read from the layout by eye |
| Mid | A25K | A25k | Potentiometer | read from the layout by eye |
| Low | A1M | A1M | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Tone | DPDT | DPDT | read from the layout by eye | |
Other boards based on the BAJA MDR Overdrive
- BAJA MDR Overdrive Dirtbox Layouts