125B · 3 knobs
VectorAmbient Delay
Based on the Deep Blue Delay· 2 other boards clone it
- Category
- Delay
- Controls
- Delay · Feedback · Mix
- Difficulty
- Intermediate
- Price
- $12.50in stock
From the vendor
With similar frequency bandwidth to a tape unit, this analog-voiced digital delay is a favorite even among analog purists.
The Vector Ambient Delay is an easy delay project based on the Mad Professor Deep Blue Delay with a few modifications and improvements added.
The circuit is based around the PT2399 delay chip. While the PT2399 is technically digital, it doesn’t have the sterile sound characteristics associated with modern digital delays, but is instead much warmer and analog-voiced, with similar characteristics to a tape delay unit. It’s equally suited for short slapback effects or longer rhythmic repeats.
Your ears can be the final judge, but even most analog purists give high praise to this circuit. With the overall complexity being much lower and the cost of parts being far cheaper than a BBD-based delay, you owe it to yourself to try this one before jumping straight into a true analog delay!
The new version of the Vector removes compatibility with the Rebote 2.5 in favor of a simplified build process. The previous version of the Vector is still available if you want this option.
Schematic
The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 64 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 22 | ||||
| R1 | 180k | 180k | Metal film resistor, 1/4W | |
| R2 | 360k | 360k | Metal film resistor, 1/4W | |
| R3 | 22k | 22k | Metal film resistor, 1/4W | |
| R4 | 12k | 12k | Metal film resistor, 1/4W | |
| R5 | 1k | 1k | Metal film resistor, 1/4W | |
| R6 | 100k | 100k | Metal film resistor, 1/4W | |
| R7 | 10k | 10k | Metal film resistor, 1/4W | |
| R8 | 10k | 10k | Metal film resistor, 1/4W | |
| R9 | 10k | 10k | Metal film resistor, 1/4W | |
| R10 | 2k7 | 2.7k | Metal film resistor, 1/4W | |
| R11 | 10k | 10k | Metal film resistor, 1/4W | |
| R12 | 10k | 10k | Metal film resistor, 1/4W | |
| R13 | 20k | 20k | Metal film resistor, 1/4W | |
| R14 | 1k | 1k | Metal film resistor, 1/4W | |
| R15 | 2k | 2k | Metal film resistor, 1/4W | |
| R16 | 5k1 | 5.1k | Metal film resistor, 1/4W | |
| R17 | 20k | 20k | Metal film resistor, 1/4W | |
| R18 | 10k | 10k | Metal film resistor, 1/4W | |
| R19 | 10k | 10k | Metal film resistor, 1/4W | |
| R20 | 33R | 33 | Metal film resistor, 1/4W | |
| RPD | 2M2 | 2.2M | Metal film resistor, 1/4W | Input pulldown resistor. Can be as low as 1M. |
| LEDR | 10k | 10k | Metal film resistor, 1/4W | LED current-limiting resistor. Adjust value to change LED brightness. |
| Capacitors 24 | ||||
| C1 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 47pF | 47p | MLCC capacitor, NP0/C0G | |
| C3 | 100pF | 100p | MLCC capacitor, NP0/C0G | |
| C4 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C5 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C6 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C7 | 2n2 | 2.2n | Film capacitor, 7.2 x 2.5mm | |
| C8 | 47uF | 47u | Electrolytic capacitor, 5mm | |
| C9 | 100n | 100n | MLCC capacitor, X7R | |
| C10 | 100n | 100n | MLCC capacitor, X7R | |
| C11 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C12 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C13 | 15n | 15n | Film capacitor, 7.2 x 2.5mm | |
| C14 | 2n2 | 2.2n | Film capacitor, 7.2 x 2.5mm | |
| C15 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C16 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C17 | 47n | 47n | Film capacitor, 7.2 x 2.5mm | |
| C18 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C19 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C20 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Power supply filter capacitor. |
| C21 | 47uF | 47u | Electrolytic capacitor, 5mm | Reference voltage filter capacitor. |
| C22 | 47uF | 47u | Electrolytic capacitor, 5mm | Power supply filter capacitor. (5V) |
| C23 | 100n | 100n | MLCC capacitor, X7R | Power supply filter capacitor. (5V) |
| C24 | 100n | 100n | MLCC capacitor, X7R | Power supply filter capacitor. |
| Diodes 2 | ||||
| D1 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| D2 | 3mm green | 3MM GREEN | LED, 3mm, green diffused | Optional current-limiting diode to prevent harsh clipping. |
| ICs 3 | ||||
| REG | 78L05 | 78L05 | Regulator, +5V, TO-92 | |
| IC1 | TL072 | TL072 | Operational amplifier, DIP8 | |
| IC2 | PT2399 | PT2399 | Digital echo IC, DIP16 | |
| Potentiometers 3 | ||||
| DELAY | 50kB | B50k | 16mm right-angle PCB mount pot | |
| FDBK | 50kB | B50k | 16mm right-angle PCB mount pot | |
| MIX | 50kB | B50k | 16mm right-angle PCB mount pot | |
| Trimmers 1 | ||||
| INF | 10k | 10k | Trimmer, 10%, 1/4” | |
| Switches 1 | ||||
| FSW | 3PDT | 3PDT | Stomp switch, 3PDT | |
| LEDs 1 | ||||
| LED | 5mm | 5MM | LED, 5mm, red diffused | |
| Jacks & sockets 5 | ||||
| IC1-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IC2-S | DIP16 socket | DIP16 SOCKET | IC socket, DIP-16 | |
| IN | 1/4" stereo | 1/4" STEREO | 1/4" phone jack, closed frame | Switchcraft 112BX 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 | Mouser 163-4302-E or equivalent. |
| Hardware 2 | ||||
| BATT | Battery snap | BATTERY SNAP | 9V battery snap | Optional. Use the soft plastic type—the hard-shell type will not fit. |
| ENC | 125B | 125B | Enclosure, die-cast aluminum | Can also use a Hammond 1590N1. |
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