Enclosure not stated · 3 knobs
Lectric Fx Momento Delay / PT2399 EHX Memory ManVerified
Based on the Lectric Fx Momento Delay / PT2399 EHX Memory Man
From the post
Ok, another monster of a layout... Here is a delay based on the earliest version of EHX Memory Man (not Deluxe version). The obsolete and super rare SAD1024 BBDs is replaced by a PT2399 and is supposed to share almost the same sonic qualities, i.e. dark and murky. The rest of the audio circuit is pretty much the same as the old vintage units except for some upgrades to the reduce the noise floor. Also there is a voltage doubler with a 15v regulator added to achieve the requierd headroom found in the vintage units. Schematic, more info and setup guide is avaiable HERE.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 51 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
- 36K at column 15 rows E-H: printed clearly, unusual value
- 75K (two: horizontal on row D and vertical at column 17): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 20 | ||||
| ×2 | 220K | 220k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×2 | 75K | 75k | read from the layout by eye | |
| ×4 | 15K | 15k | read from the layout by eye | |
| ×2 | 56K | 56k | read from the layout by eye | |
| ×1 | 36K | 36k | read from the layout by eye | |
| ×1 | 43K | 43k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×3 | 51K | 51k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×4 | 100K | 100k | read from the layout by eye | |
| ×1 | 330Ω | 330 | read from the layout by eye | |
| ×2 | 27K | 27k | read from the layout by eye | |
| ×1 | 18K | 18k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 33Ω | 33 | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 18 | ||||
| ×1 | 39pF | 39p | ceramic; read from the layout by eye | |
| ×2 | 100pF | 100p | ceramic; read from the layout by eye | |
| ×1 | 150pF | 150p | ceramic; read from the layout by eye | |
| ×1 | 330pF | 330p | ceramic; read from the layout by eye | |
| ×1 | 470pF | 470p | ceramic; read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 1.5nF | 1.5n | read from the layout by eye | |
| ×2 | 1.8nF | 1.8n | read from the layout by eye | |
| ×1 | 5.6nF | 5.6n | read from the layout by eye | |
| ×1 | 6.8nF | 6.8n | read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×8 | 100nF | 100n | 6 film, 2 ceramic; read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×2 | 1uF | 1u | film; read from the layout by eye | |
| ×3 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×3 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 33uF | 33u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×5 | 1N5817 | 1N5817 | D1-D5; read from the layout by eye | |
| ICs 7 | ||||
| IC1 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC2 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC3 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC4 | PT2399 | PT2399 | read from the layout by eye | |
| IC5 | LT1054 | LT1054 | read from the layout by eye | |
| REG1 | 78L15 | 78L15 | regulator; read from the layout by eye | |
| REG2 | 78L05 | 78L05 | regulator; read from the layout by eye | |
| Potentiometers 3 | ||||
| Delay | B50K | B50k | Potentiometer | read from the layout by eye |
| Feedback | A10K | A10k | Potentiometer | read from the layout by eye |
| Mix | B10K | B10k | Potentiometer | read from the layout by eye |
| Trimmers 2 | ||||
| Volume | 100K | 100k | read from the layout by eye | |
| Del | 100K | 100k | read from the layout by eye | |