125B · 3 knobs
ElysiumAmbient Delay
Based on the Ibanez EM5 Echomachine
- Category
- Delay
- Controls
- Delay · Feedback · Level
- Difficulty
- Advanced
- Price
- $12.50in stock
From the vendor
An analog-voiced digital delay that emulates vintage tape echo units, with heavy filtering and a soft-clipping overdrive on the repeats.
The Elysium Ambient Delay is an adaptation of the Ibanez EM5 Echo Machine, a late addition to the Soundtank “5 Series” produced from 1996 to 2000.
The EM5 was designed to emulate tape delay units from the 1970s. While the delay IC is technically a digital chip with an analog interface, similar to the PT2399, there is a great deal of filtering applied to the delay signal—including a diode-clipping overdrive stage, similar to the Tube Screamer—which gives it a warm, ambient, and very analog sound that adds depth and substance without getting in the way or muddying the tone, suitable for any style of playing.
Like the rest of the Soundtank series, it was generally overlooked during production, and could be found for $50-70 up until a few years ago. But it has slowly grown to mythical status, particularly after Dave Phillips of LA Sound Design brought attention to the fact that he includes it in many of his professional pedalboards and that it’s his favorite always-on delay. Today, it rarely sells for less than $300.
The Elysium is an exact recreation of the EM5, except that the JFET switching has been converted to true bypass. The original EM5 was notorious for its unreliable switching, so this is a significant improvement on the Soundtank version while keeping the signal path identical.
Note: The PCB-only version of this project uses a type of capacitor that has been temporarily discontinued by WIMA. Please see our news article about the issue and the substitution spreadsheet for project-specific recommendations. We are stocking a limited supply in the mean time. The build document has not yet been updated to reflect this. It does not impact the kits.
Schematic
The schematic is in the vendor's build document, page 8. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 95 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 36 | ||||
| R1 | 1k | 1k | Metal film resistor, 1/4W | |
| R2 | 470k | 470k | Metal film resistor, 1/4W | |
| R3 | 47k | 47k | Metal film resistor, 1/4W | |
| R4 | 10k | 10k | Metal film resistor, 1/4W | |
| R5 | 22k | 22k | Metal film resistor, 1/4W | |
| R6 | 47k | 47k | Metal film resistor, 1/4W | |
| R7 | 47k | 47k | Metal film resistor, 1/4W | |
| R8 | 47k | 47k | Metal film resistor, 1/4W | |
| R9 | 10k | 10k | Metal film resistor, 1/4W | |
| R10 | 47k | 47k | Metal film resistor, 1/4W | |
| R11 | 22k | 22k | Metal film resistor, 1/4W | |
| R12 | 22k | 22k | Metal film resistor, 1/4W | |
| R13 | 22k | 22k | Metal film resistor, 1/4W | |
| R14 | 22k | 22k | Metal film resistor, 1/4W | |
| R15 | 30R | 30 | Metal film resistor, 1/4W | |
| R16 | 30R | 30 | Metal film resistor, 1/4W | |
| R17 | 22k | 22k | Metal film resistor, 1/4W | |
| R18 | 22k | 22k | Metal film resistor, 1/4W | |
| R19 | 33k | 33k | Metal film resistor, 1/4W | |
| R20 | 10k | 10k | Metal film resistor, 1/4W | |
| R21 | 1k | 1k | Metal film resistor, 1/4W | |
| R22 | 51k | 51k | Metal film resistor, 1/4W | |
| R23 | 75k | 75k | Metal film resistor, 1/4W | |
| R24 | 390k | 390k | Metal film resistor, 1/4W | |
| R25 | 9k1 | 9.1k | Metal film resistor, 1/4W | |
| R26 | 390k | 390k | Metal film resistor, 1/4W | |
| R27 | 3k3 | 3.3k | Metal film resistor, 1/4W | |
| R28 | 330R | 330 | Metal film resistor, 1/4W | |
| R29 | 5k1 | 5.1k | Metal film resistor, 1/4W | |
| R30 | 10k | 10k | Metal film resistor, 1/4W | |
| R31 | 10k | 10k | Metal film resistor, 1/4W | |
| R32 | 10k | 10k | Metal film resistor, 1/4W | |
| R33 | 470R | 470 | Metal film resistor, 1/4W | |
| R34 | 100k | 100k | Metal film resistor, 1/4W | |
| RPD | 2M2 | 2.2M | Metal film resistor, 1/4W | Input pull-down resistor. |
| LEDR | 10k | 10k | Metal film resistor, 1/4W | LED current-limiting resistor. Adjust value to change LED brightness. |
| Capacitors 32 | ||||
| C1 | 47n | 47n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C3 | 47pF | 47p | MLCC capacitor, NP0/C0G | |
| C4 | 47pF | 47p | MLCC capacitor, NP0/C0G | |
| C5 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C6 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C7 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C8 | 3n3 | 3.3n | Film capacitor, 7.2 x 2.5mm | |
| C9 | 470pF | 470p | MLCC capacitor, NP0/C0G | |
| C10 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C11 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C12 | 47uF | 47u | Electrolytic capacitor, 5mm | |
| C13 | 100n | 100n | MLCC capacitor, X7R | |
| C14 | 100n | 100n | MLCC capacitor, X7R | |
| C15 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C16 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C17 | 3n3 | 3.3n | Film capacitor, 7.2 x 2.5mm | |
| C18 | 680pF | 680p | MLCC capacitor, NP0/C0G | |
| C19 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C20 | 68n | 68n | Film capacitor, 7.2 x 2.5mm | |
| C21 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C22 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C23 | 5pF | 5p | MLCC capacitor, NP0/C0G | |
| C24 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C25 | 47uF | 47u | Electrolytic capacitor, 5mm | Regulator filter capacitor. |
| C26 | 47uF | 47u | Electrolytic capacitor, 5mm | Regulator filter capacitor. |
| C27 | 100n | 100n | MLCC capacitor, X7R | Regulator filter capacitor. |
| C28 | 47uF | 47u | Electrolytic capacitor, 5mm | Reference voltage filter capacitor. |
| C29 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Power supply filter capacitor. |
| C30 | 10uF | 10u | Electrolytic capacitor, 5mm | Power supply filter capacitor. |
| C31 | 10uF | 10u | Electrolytic capacitor, 5mm | Power supply filter capacitor. |
| C32 | 100n | 100n | MLCC capacitor, X7R | Power supply filter capacitor. |
| Diodes 3 | ||||
| D1 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| D2 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D3 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| Transistors 3 | ||||
| Q1 | 2N5089 | 2N5089 | BJT transistor, NPN, TO-92 | Can also substitute 2N5088. |
| Q2 | 2N5089 | 2N5089 | BJT transistor, NPN, TO-92 | Can also substitute 2N5088. |
| Q3 | 2N5087 | 2N5087 | BJT transistor, PNP, TO-92 | Can also substitute 2N3906. |
| ICs 5 | ||||
| RG1 | 78L05 | 78L05 | Regulator, +5V, TO-92 | |
| IC1 | LM833 | LM833 | Operational amplifier, DIP8 | Substitute. Original used NEC μPC4570. |
| IC2 | LM833 | LM833 | Operational amplifier, DIP8 | Substitute. Original used NEC μPC4570. |
| IC3 | M65831AP | M65831AP | Echo IC, DIP-24 wide | Available from Aion FX. See build notes for more information. |
| IC4 | SN74HCU04 | SN74HCU04 | CMOS hex inverter, 6 circuit, DIP14 | |
| Potentiometers 3 | ||||
| DELAY | 50kB | B50k | 16mm right-angle PCB mount pot | |
| FDBK. | 100kB | B100k | 16mm right-angle PCB mount pot | |
| LEVEL | 100kB | B100k | 16mm right-angle PCB mount pot | |
| Trimmers 3 | ||||
| TR1 | 10k | 10k | Trimmer, 10%, 1/4" | Bourns 3362P |
| TR2 | 50k | 50k | Trimmer, 10%, 1/4" | Bourns 3362P |
| TR3 | 50k | 50k | Trimmer, 10%, 1/4" | Bourns 3362P |
| Switches 1 | ||||
| FSW | 3PDT | 3PDT | Stomp switch, 3PDT | Available from Aion FX. |
| LEDs 1 | ||||
| LED | 5mm | 5MM | LED, 5mm, red diffused | |
| Jacks & sockets 7 | ||||
| IC1-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IC2-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IC3-S | DIP-24 socket, wide | DIP-24 SOCKET, WIDE | IC socket, DIP-24 wide (0.6") | See build notes for info on socket choice. |
| IC4-S | DIP-14 socket | DIP-14 SOCKET | IC socket, DIP-14 | |
| IN | 1/4" mono | 1/4" MONO | 1/4" phone jack, closed frame | Switchcraft 111X or equivalent. |
| OUT | 1/4" mono | 1/4" MONO | 1/4" phone jack, closed frame | Switchcraft 111X or equivalent. |
| DC | 2.1mm | 2.1MM | DC jack, 2.1mm panel mount | Lumberg NEB/J 21 C or equivalent. |
| Hardware 1 | ||||
| ENC | 125B | 125B | Enclosure, die-cast aluminum | Can also use a Hammond 1590N1. |