Enclosure not stated · 3 knobs
Boss DS-1 with Keeley Ultra ModsVerified
Based on the Boss DS-1· 13 other boards clone it
- Category
- Distortion
- Controls
- Distortion · Tone · Level
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Boss, Distortion, Keeley
From the post
Got a request for the classic DS-1 with some Keeley mods and since my earlier DS-1 layout doesn't have board mounted pots, it seemed like a good idea. The flip-flop switching has been removed. Here's the schematic for reference.
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.
Check before you build · 2 values the reader of this layout was not sure of
- 250pF beside Q2 (row M): printed clearly, unusual value
- 2.4K at the left edge (rows H-K): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×6 | 10K | 10k | read from the layout by eye | |
| ×5 | 100K | 100k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×2 | 6.8K | 6.8k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 2.4K | 2.4k | read from the layout by eye | |
| ×1 | 20K | 20k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 22Ω | 22 | read from the layout by eye | |
| Capacitors 9 | ||||
| ×5 | 100nF | 100n | read from the layout by eye | |
| ×4 | 1uF | 1u | drawn as box film capacitors; read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 250pF | 250p | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 1N4148 | 1N4148 | read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N5088 | 2N5088 | 2N5088 or similar; read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | 2N5088 or similar; read from the layout by eye | |
| Q3 | 2N5088 | 2N5088 | 2N5088 or similar; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | Dual opamp | DUAL OPAMP | legend says only 'Dual opamp'; read from the layout by eye | |
| Potentiometers 3 | ||||
| Distortion | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B20K | B20k | Potentiometer | read from the layout by eye |
| Level | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPDT | SPDT | toggle on pads Sw1-Sw3; read from the layout by eye | |
| LEDs 2 | ||||
| D1 | 3mm red LED | 3MM RED LED | read from the layout by eye | |
| D2 | 3mm red LED | 3MM RED LED | read from the layout by eye | |
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