Enclosure not stated · 2 knobs
Analogguru SDD-3000 PreampVerified
Based on the Analogguru SDD-3000 Preamp
From the post
Requested by a few people, this is the pre-amp section of the rack mounted Korg SDD-3000 digital delay. One for the U2 fans who want to try to get a bit closer to The Edge's tone.
This one based on Analogguru's schematic with a simplified 9V supply.
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 23 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×4 | 22K | 22k | read from the layout by eye | |
| ×2 | 3K3 | 3.3k | read from the layout by eye | |
| ×1 | 220R | 220 | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 5K6 | 5.6k | read from the layout by eye | |
| ×1 | 560K | 560k | read from the layout by eye | |
| ×1 | 2M2 | 2.2M | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 4p7 | 4.7p | read from the layout by eye | |
| ×1 | 10p | 10p | read from the layout by eye | |
| ×1 | 100n | 100n | read from the layout by eye | |
| ×1 | 470n | 470n | read from the layout by eye | |
| ×3 | 47u | 47u | electrolytic; read from the layout by eye | |
| ×2 | 4u7 | 4.7u | electrolytic; read from the layout by eye | |
| Diodes 4 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| D4 | 1N4148 | 1N4148 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC2 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Volume | A20K | A20k | Potentiometer | read from the layout by eye |
| Master | A100K | A100k | Potentiometer | read from the layout by eye |