Enclosure not stated · 3 knobs
Keeley El Rey DoradoVerified
Based on the Keeley El Rey Dorado· 2 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, Keeley, Overdrive
From the post
Here's another Plexi-in-a-box overdrive, this time from the great Robert Keeley. It's a cascaded opamp design running on a bipolar +/-9v supply. The Power Toggle as it's known on the original selects between red LEDs or BAT46s for asymmetrical clipping.
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 31 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×1 | 22Ω | 22 | read from the layout by eye | |
| ×1 | 390Ω | 390 | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×2 | 18K | 18k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 9 | ||||
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×2 | 120pF | 120p | read from the layout by eye | |
| ×1 | 39nF | 39n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×2 | 470nF | 470n | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 5 | ||||
| D1 | BAT46 | BAT46 | read from the layout by eye | |
| D2 | BAT46 | BAT46 | read from the layout by eye | |
| D3 | BAT46 | BAT46 | read from the layout by eye | |
| ×1 | 8.2V | 8V2 | zener, printed 8.2v; read from the layout by eye | |
| ×1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 2 | ||||
| ×1 | 7660S | 7660S | charge pump; read from the layout by eye | |
| ×1 | LF347 | LF347 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | A1M | A1M | Potentiometer | read from the layout by eye |
| Tone | B10K | B10k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Pwr | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| LEDs 3 | ||||
| D4 | 3mm red LED | 3MM RED LED | read from the layout by eye | |
| D5 | 3mm red LED | 3MM RED LED | read from the layout by eye | |
| D6 | 3mm red LED | 3MM RED LED | read from the layout by eye | |
Other boards based on the Keeley El Rey Dorado
- Keeley El Rey Dorado Dirtbox Layouts
- King Midas Overdrive PedalPCB · 125B · $8.00