Enclosure not stated · 3 knobs
Wampler Plexi-DriveVerified
Based on the Wampler Plexi-Drive· 9 other boards clone it
- Category
- Distortion
- Build
- Vero· 18×11· 11 cuts, 1 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Distortion, Overdrive, Wampler
From the post
In the words of the maker Brian Wampler, this was designed to sound "sort of like a cross between a "Marshall 18" and a "JTM45", and those who have purchased the Plexi-Drive agree that it's very accurate! The bass boost toggle switch adds fat, full bottom end which is very useful in lower gain or lower volume (bedroom practicing) applications. For band volumes, cutting the bass out a bit really helps the tone cut through perfectly."
Some people experienced popping which can be due to the input being connected directly to the first JFET gate. This is a modified version which adds an input capacitor and anti-popping resistor.
Geiri's demos of his dual build with Les Paul and Strat:
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 24 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×5 | 15K | 15k | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 10R | 10 | read from the layout by eye | |
| ×1 | 4K7 | 4.7k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| Capacitors 9 | ||||
| ×1 | 47p | 47p | read from the layout by eye | |
| ×1 | 220p | 220p | read from the layout by eye | |
| ×1 | 470p | 470p | read from the layout by eye | |
| ×2 | 2n2 | 2.2n | the one at Sw1b is socketed: experiment with similar values; read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×1 | 22n | 22n | read from the layout by eye | |
| ×1 | 1u | 1u | electrolytic; 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 | ? | ? | value not given; 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 | J201 | J201 | JFET; read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | A500K | A500k | Potentiometer | read from the layout by eye |
| Tone | A25K | A25k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Sw1 | SPST | SPST | bass switch; read from the layout by eye | |
Other boards based on the Wampler Plexi-Drive
- Wampler Plexi Drive Dirtbox Layouts
- Wampler Plexi Drive Effects Layouts (blog)
- Wampler Plexi-Drive Effects Layouts (blog)
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