Enclosure not stated · 3 knobs
Wampler Distortion Plus ModsVerified
Based on the MXR Distortion+· 22 other boards clone it
- Category
- Distortion
- Controls
- Distortion · Tone · Volume
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Distortion, MXR, Overdrive, Wampler
From the post
A while back Brian Wampler shared a bunch of mods to the classic MXR Distortion Plus circuit in Premiere Guitar magazine. It adds a tone control, a switchable soft clipping stage, a compression switch, and a bass boost switch.
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 26 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- D8 (row E, right of the 2.2nF): the legend lists D2, 4, 6 as 1N34a and D1, 3, 5, 7, 9 as 1N4001 and omits D8; it is drawn in the same glass/red-band style as D2, D4 and D6, so probably 1N34A
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 3 | ||||
| ×4 | 1M | 1M | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 1nF | 1n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 9 | ||||
| D1 | 1N4001 | 1N4001 | read from the layout by eye | |
| D2 | 1N34A | 1N34A | read from the layout by eye | |
| D3 | 1N4001 | 1N4001 | read from the layout by eye | |
| D4 | 1N34A | 1N34A | read from the layout by eye | |
| D5 | 1N4001 | 1N4001 | read from the layout by eye | |
| D6 | 1N34A | 1N34A | read from the layout by eye | |
| D7 | 1N4001 | 1N4001 | read from the layout by eye | |
| D8 | ? | ? | value not given; drawn like the 1N34A diodes D2, D4, D6; read from the layout by eye | |
| D9 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | 741 | 741 | printed 741; read from the layout by eye | |
| Potentiometers 3 | ||||
| Distortion | B1M | B1M | Potentiometer | 1M Lin; read from the layout by eye |
| Tone | B1M | B1M | Potentiometer | 1M Lin; read from the layout by eye |
| Volume | A500K | A500k | Potentiometer | 500K Log; read from the layout by eye |
| Switches 3 | ||||
| Smooth | SPST | SPST | read from the layout by eye | |
| Bass | SPST | SPST | read from the layout by eye | |
| Comp | SPST | SPST | read from the layout by eye | |
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