1590B
MXR Custom Badass Modified ODVerified
Based on the MXR Custom Badass Modified OD· 3 other boards clone it
From the post
Here's another one I was surprised I hadn't drawn up before. Like the Custom Badass '78 Distortion, it's also based on an old Boss pedal—the SD-1. (Or I guess you could say it's a modified version of the Zakk Wylde Overdrive, but that's based on the SD-1... Either way, it's definitely been modified with the added 100Hz control and the Bump switch. Here's the schematic for reference. Should fit nicely in a 1590B.
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 32 rows
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Check before you build · 4 values the reader of this layout was not sure of
- 28nF (row D, top left): printed clearly, unusual value
- 250nF (row G, right of centre): printed clearly, unusual value
- 250pF (right edge, rows I-K): printed clearly, unusual value
- 110K (col 13, rows L-O): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×7 | 10K | 10k | read from the layout by eye | |
| ×2 | 470Ω | 470 | read from the layout by eye | |
| ×2 | 5.1K | 5.1k | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 24K | 24k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 1.5M | 1.5M | read from the layout by eye | |
| ×1 | 110K | 110k | read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 250pF | 250p | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×2 | 18nF | 18n | read from the layout by eye | |
| ×1 | 28nF | 28n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 250nF | 250n | read from the layout by eye | |
| ×1 | 1uF | 1u | box film; read from the layout by eye | |
| ×1 | 3.3uF | 3.3u | tantalum; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ×3 | 1N4148 | 1N4148 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | MPSA14 | MPSA14 | read from the layout by eye | |
| ICs 1 | ||||
| ×2 | MC33178 | MC33178 | printed "33178"; read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | A1M | A1M | Potentiometer | read from the layout by eye |
| Tone | B20K | B20k | Potentiometer | read from the layout by eye |
| 100Hz | B20K | B20k | Potentiometer | read from the layout by eye |
| Volume | B10K | B10k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPST | SPST | Sw1 / Sw2 pads; read from the layout by eye | |
Other boards based on the MXR Custom Badass Modified OD
- MXR Custom Badass Modified OD Dirtbox Layouts
- Custom Badass Modified OD PCBWay: Glory to Ukraine
- MXR Custom Badass Modified O.D. Tagboard Effects