1590B · 4 knobs
Grind Customs FX De Profundis Delay
Based on the Grind Custom Fx DeProfundis Delay· 3 other boards clone it
From the post
Merry Christmas everyone! Hope everyone gets ample time to get some soldering done over the holidays.
Grind Customs had a lot of really great projects, but their site hasn't been up in ages and it seems they're gone for good. Their De Profundis delay was very well regarded and they offered an add-on modulation board, the PLFO. Originals had the tone control as a trimmer, but lets go for broke and have it externally. The delay board will fit in a 1590B, but with the modulation add-on I'd recommend using a 125B. Here's the original De Profundis and PLFO build docs 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 24 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×8 | 10K | 10k | read from the layout by eye | |
| ×4 | 22K | 22k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 150K | 150k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| Capacitors 9 | ||||
| ×2 | 100pF | 100p | read from the layout by eye | |
| ×2 | 2.2nF | 2.2n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×2 | 22nF | 22n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×5 | 100nF | 100n | read from the layout by eye | |
| ×4 | 1uF | 1u | box film; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 3 | ||||
| ×1 | PT2399 | PT2399 | read from the layout by eye | |
| ×1 | TL072 | TL072 | read from the layout by eye | |
| ×1 | 78L05 | 78L05 | regulator; named only on the wiring diagram; read from the layout by eye | |
| Potentiometers 4 | ||||
| Time | B50K | B50k | Potentiometer | read from the layout by eye |
| Mix | B50K | B50k | Potentiometer | read from the layout by eye |
| Tone | B10K | B10k | Potentiometer | read from the layout by eye |
| Feedback | B50K | B50k | Potentiometer | read from the layout by eye |
Other boards based on the Grind Custom Fx DeProfundis Delay
- Grind Customs DeProfundis Delay Amplified Parts
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