1590B · 4 knobs
Andromeda (Legacy)
Based on the Nobels ODR-1· 4 other boards clone it
- Category
- Overdrive
- Controls
- Gain · Level · Spectrum · Bass
- Difficulty
- Intermediate
- Price
- see vendor
From the vendor
A unique overdrive pedal whose complex drive tone earns it a spot on the pedalboards of many Nashville studio musicians.
Project description
The Andromeda Overdrive project is a clone of the Nobels ODR-1, a really interesting overdrive that’s a favorite among Nashville session players but remains fairly obscure otherwise. It’s a complex circuit with a great deal of precise filtering and tuning.
The overwhelming criticism of the ODR-1 is that it has too much bass. It’s true—the corner frequency in the op-amp clipping stage is very low and the stock circuit has no way to dial it out. It pairs up very well with a Telecaster bridge pickup, but not much else.
So, for this project I borrowed the Bass control from the Timmy, which makes the corner frequency variable. With the knob all the way up, it’s the stock ODR-1, but now you can turn it down to more reasonable levels. With this modification, the ODR-1 is easily in my top 3 overdrives—and I’ve played a lot of them.
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 65 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 28 | ||||
| R1 | 33k | 33k | ||
| R24 | 1k2 | 1.2k | ||
| R2 | 1M | 1M | ||
| R25 | 150k | 150k | ||
| R3 | 3k3 | 3.3k | ||
| R26 | 150k | 150k | ||
| R4 | 2k7 | 2.7k | ||
| R27 | 15k | 15k | ||
| R5 | 10k | 10k | ||
| R28 | 15k | 15k | ||
| R6 | 1k8 | 1.8k | ||
| R7 | 820R | 820 | ||
| R8 | 1k5 | 1.5k | ||
| R9 | 12k | 12k | ||
| R10 | 39k | 39k | ||
| R11 | 10k | 10k | ||
| R12 | 12k | 12k | ||
| R13 | 5k1 | 5.1k | ||
| R14 | 2k2 | 2.2k | ||
| R15 | 150k | 150k | ||
| R16 | 3k3 | 3.3k | ||
| R17 | 1k2 | 1.2k | ||
| R18 | 43k | 43k | ||
| R19 | 10k | 10k | ||
| R20 | 20k | 20k | ||
| R21 | 4k7 | 4.7k | ||
| R22 | 22k | 22k | ||
| R23 | 5k1 | 5.1k | ||
| Capacitors 24 | ||||
| C1 | 68n | 68n | ||
| C2 | 22n | 22n | ||
| C3 | 120pF | 120p | ||
| C4 | 82n | 82n | ||
| C5 | 2u2 | 2.2u | elec | |
| C6 | 2u2 | 2.2u | elec | |
| C7 | 2n7 | 2.7n | ||
| C8 | 82n | 82n | ||
| C9 | 1n | 1n | ||
| C10 | 22n | 22n | ||
| C11 | 27n | 27n | ||
| C12 | 100n | 100n | ||
| C13 | 8n2 | 8.2n | ||
| C14 | 560pF | 560p | ||
| C15 | 8n2 | 8.2n | ||
| C16 | 4n7 | 4.7n | ||
| C17 | 82n | 82n | ||
| C18 | 1u | 1u | elec | |
| C19 | 2u2 | 2.2u | elec | |
| C20 | 470n | 470n | ||
| C21 | 3u3 | 3.3u | elec | |
| C22 | 100uF | 100u | elec | |
| C23 | 47uF | 47u | elec | |
| C24 | 47uF | 47u | elec | |
| Diodes 5 | ||||
| D5 | are | ARE | ||
| D2 | 1N914 | 1N914 | ||
| D3 | 1N914 | 1N914 | ||
| D4 | 1N914 | 1N914 | ||
| D1 | 1N4002 | 1N4002 | ||
| Transistors 2 | ||||
| Q1 | 2N5457 | 2N5457 | ||
| Q2 | 2N5088 | 2N5088 | ||
| ICs 1 | ||||
| IC2 | JRC4558D | JRC4558D | ||
| Potentiometers 4 | ||||
| GAIN | 250KA | A250k | Potentiometer | |
| LEVEL | 50KA | A50k | Potentiometer | |
| SPECTRUM | 25KB | B25k | Potentiometer | |
| BASS | 50KC | C50k | Potentiometer | |
| LEDs 1 | ||||
| LED1 | into | INTO | ||
Other boards based on the Nobels ODR-1
- Andromeda Aion FX · 125B · $12.50
- Nobels ODR-1 Experimentalists Anonymous
- Laureate Jr Madbean · 1590B · $10.00
- Nobleman Overdrive PedalPCB · 125B · $12.00