Enclosure not stated · 4 knobs
Echoplexus Tape DelayA PT2399-Based Workalike of the Classic Tape Echo
- Category
- Delay
- Price
- see vendor
From the vendor
I know, I know. Another PT2399 delay. Big whoop. But wait, I promise you'll like this one! The Echoplexus is a PT2399-based take on the legendery Echoplex EP-3, complete with discrete JFET preamp. But that's not all. The preamp can be switched out for an opamp-based preamp if you prefer. There is also a “wet kill” function that will allow you to use the preamp on it's on and run the pedal in buffered bypass mode for that mojo and give you trails functionality. The filtering has been painstakingly tailored to get that “tape” sound where both high and low end are rolled off on the repeats. Additionally, a modulation section with two different frequencies is implemented to provide modulation at frequencies that correspond to the physical tape motion of the EP-3. In short, it's not the run-of-the-mill “analog” voiced PT2399 delay. So stick around, you just might like what you see.
Schematic
The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 104 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 35 | ||||
| R1 | 1M | 1M | ||
| R2 | 100k | 100k | ||
| R3 | 220k | 220k | ||
| R4 | 100k | 100k | ||
| R5 | 1M | 1M | ||
| R6 | 4k7 | 4.7k | ||
| R7 | 22k | 22k | ||
| R8 | 4k7 | 4.7k | ||
| R9 | 10k | 10k | ||
| R10 | 10k | 10k | ||
| R11 | 10k | 10k | ||
| R12 | 10k | 10k | ||
| R13 | 10k | 10k | ||
| R14 | 10k | 10k | ||
| R15 | 1k | 1k | ||
| R16 | 5k6 | 5.6k | ||
| R17 | 2k2 | 2.2k | ||
| R18 | 2k2 | 2.2k | ||
| R19 | 18k | 18k | ||
| R20 | 22k | 22k | ||
| R21 | 22k | 22k | ||
| R22 | 1k | 1k | ||
| R23 | 100k | 100k | ||
| R25 | 10k | 10k | ||
| R26 | 10k | 10k | ||
| R27 | 10k | 10k | ||
| R28 | 15k | 15k | ||
| R29 | 4k7 | 4.7k | ||
| R30 | 470k | 470k | ||
| R32 | 10k | 10k | ||
| R33 | 2M2 | 2.2M | ||
| R34 | 2M2 | 2.2M | ||
| R35 | 15k | 15k | ||
| R36 | 120k | 120k | ||
| R37 | 1k | 1k | ||
| Capacitors 39 | ||||
| C1 | 100n | 100n | ||
| C2 | 47u | 47u | ||
| C3 | 47p | 47p | ||
| C4 | 220p | 220p | ||
| C5 | 22n | 22n | ||
| C6 | 10u | 10u | ||
| C7 | 100n | 100n | ||
| C8 | 100n | 100n | ||
| C9 | 100n | 100n | ||
| C10 | 100n | 100n | ||
| C11 | 100n | 100n | ||
| C12 | 100n | 100n | ||
| C13 | 1u | 1u | ||
| C14 | 1n | 1n | ||
| C15 | 4n7 | 4.7n | ||
| C16 | 4n7 | 4.7n | ||
| C17 | 1n | 1n | ||
| C18 | 220n | 220n | ||
| C19 | 470n | 470n | ||
| C20 | 1u | 1u | ||
| C22 | 220n | 220n | ||
| C23 | 1u | 1u | ||
| C24 | 100p | 100p | ||
| C25 | 1u | 1u | ||
| C26 | 100u | 100u | ||
| C27 | 47u | 47u | ||
| C28 | 100u | 100u | ||
| C29 | 10u | 10u | ||
| C30 | 10u | 10u | ||
| C31 | 10u | 10u | ||
| C32 | 10u | 10u | ||
| C33 | 1u | 1u | ||
| C34 | 1u | 1u | ||
| C35 | 1u | 1u | ||
| C36 | 470n | 470n | ||
| C37 | 470n | 470n | ||
| C38 | 4u7 | 4.7u | ||
| C39 | 4u7 | 4.7u | ||
| C40 | 4u7 | 4.7u | ||
| Diodes 5 | ||||
| D1 | B5817WS-TP | B5817WS-TP | ||
| D3 | B5817WS-TP | B5817WS-TP | ||
| D4 | B5817WS-TP | B5817WS-TP | ||
| D5 | B5817WS-TP | B5817WS-TP | ||
| D6 | B5817WS-TP | B5817WS-TP | ||
| Transistors 3 | ||||
| Q2 | MMBF5457 | MMBF5457 | ||
| T1 | MMBT5088LT1G | MMBT5088LT1G | ||
| T2 | MMBT5088LT1G | MMBT5088LT1G | ||
| ICs 4 | ||||
| IC1 | TL072D | TL072D | ||
| IC2 | TC1044SEOA | TC1044SEOA | ||
| IC3 | DIP16 | DIP16 | ||
| REG1 | LM78L | LM78L | ||
| Potentiometers 4 | ||||
| FB | B50k | B50k | ||
| MIX | B100k | B100k | ||
| MOD | B500k | B500k | Dual | |
| TIME | B50k | B50k | ||
| Trimmers 1 | ||||
| PRE | Trimmer | |||
| Switches 2 | ||||
| SW | LSP10 | LSP10 | ||
| SW_1 | DPDT | DPDT | ||
| LEDs 3 | ||||
| D2 | LED | LED | ||
| LED | LSP10 | LSP10 | ||
| R24 | RLED | RLED | ||
| Other 8 | ||||
| +9V | LSP10 | LSP10 | ||
| GND | LSP10 | LSP10 | ||
| GND_IN | LSP10 | LSP10 | ||
| GND_OUT | LSP10 | LSP10 | ||
| IN | LSP10 | LSP10 | ||
| OUT | LSP10 | LSP10 | ||
| OUT1 | LSP10 | LSP10 | ||
| OUT2 | LSP10 | LSP10 | ||