Enclosure not stated · 3 knobs
King Dubby DelayVerified
Based on the King Dubby Delay· 1 other board clones it
From the post
Here's a cool delay designed by Nocentelli posted over on FSB. Here's what he had to say about it over there:
Here's a variation on the deep blue delay; two PT2399 chips and a current mirror delay pot give around 2200ms delay, although beyond 700ms gets pretty lo-fi. There are two points where a momentary SPST can be used: Either to briefly connect the input to the delay input on select phrases (dub mode), or to bypass the repeats feedback resistor for self-oscillation on demand.
Note: I've recently found out the capacitor going from Repeat 3 to Osc Sw2 is 22n.
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 41 rows
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Check before you build · 2 values the reader of this layout was not sure of
- Regulator at rows K-L left of the upper PT2399: the board view shows only pin letters, the wiring diagram labels it 7805
- 1uF electrolytic count (5): three around the TL072, one right of the upper PT2399's 20K pair, one right of the lower PT2399
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 360K | 360k | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| ×3 | 100K | 100k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×4 | 20K | 20k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×11 | 10K | 10k | read from the layout by eye | |
| ×1 | 5K | 5k | read from the layout by eye | |
| ×1 | 2K | 2k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×2 | 220Ω | 220 | read from the layout by eye | |
| ×1 | 33Ω | 33 | read from the layout by eye | |
| Capacitors 13 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×4 | 2.2nF | 2.2n | read from the layout by eye | |
| ×2 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×2 | 15nF | 15n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×8 | 100nF | 100n | read from the layout by eye | |
| ×1 | ? | ? | value not given; printed '?' on the board, between Osc Sw2 and Repeat 3; read from the layout by eye | |
| ×5 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×5 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| D1 | ? | ? | value not given; read from the layout by eye | |
| D2 | ? | ? | value not given; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5087 | 2N5087 | read from the layout by eye | |
| Q2 | 2N5087 | 2N5087 | read from the layout by eye | |
| ICs 3 | ||||
| ×1 | TL072 | TL072 | read from the layout by eye | |
| ×2 | PT2399 | PT2399 | read from the layout by eye | |
| ×1 | 7805 | 7805 | regulator, labelled on the wiring diagram; read from the layout by eye | |
| Potentiometers 3 | ||||
| Delay | B10K | B10k | Potentiometer | read from the layout by eye |
| Repeat | B50K | B50k | Potentiometer | read from the layout by eye |
| Level | B50K | B50k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Dub | SPST momentary | SPST MOMENTARY | Dub Switch; read from the layout by eye | |
| Oscillation | SPST momentary | SPST MOMENTARY | Oscillation Switch; read from the layout by eye | |
Other boards based on the King Dubby Delay
- King Dubby Delay Tagboard Effects