125B · 5 knobs
Wampler Tweed '57Verified
Based on the Wampler Tweed '57· 6 other boards clone it
- Category
- Preamp / Amp-in-a-box
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Amp Emulator, Overdrive, Wampler
From the post
Here's another (and more complicated) amp emulator, and another great design from Brian Wampler. This one stacks JFET stages much like the Cranked AC. It emulates a dirty Fender tube amp with a 3-band tone stack. I added trimmers so it's easier to bias the JFETs and it's laid out for board mounted pots in a 125B enclosure.
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 33 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×3 | 1K | 1k | read from the layout by eye | |
| ×6 | 1M | 1M | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| Capacitors 10 | ||||
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×4 | 220nF | 220n | read from the layout by eye | |
| ×3 | 1.5nF | 1.5n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×2 | 1uF | 1u | read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 6 | ||||
| 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 | |
| Q4 | J201 | J201 | JFET; read from the layout by eye | |
| Q5 | J201 | J201 | JFET; read from the layout by eye | |
| Q6 | J201 | J201 | JFET; read from the layout by eye | |
| Potentiometers 5 | ||||
| Treble | B25K | B25k | Potentiometer | read from the layout by eye |
| Bass | A100K | A100k | Potentiometer | read from the layout by eye |
| Mid | B2K | B2k | Potentiometer | read from the layout by eye |
| Gain | A500K | A500k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×3 | 50K | 50k | read from the layout by eye | |
| Switches 1 | ||||
| Switch | DPDT on/off/on | DPDT ON/OFF/ON | toggle; read from the layout by eye | |
Other boards based on the Wampler Tweed '57
- Wampler Tweed '57 Dirtbox Layouts
- Need For Tweed Effects Layouts · 125B · $8.00
- 57 Shades of Tweed Five Cats Pedals · 1590B · £4.50
- Indiana Tweed Overdrive PedalPCB · 125B · $12.00
- Wampler Tweed '57 Revolution Deux
- Wampler Tweed '57 Tagboard Effects