1590B · 3 knobs
Aurora (Legacy)
Based on the Ross / Dyna Compressor· 1 other board clones it
- Category
- Compressor· Compressor, sustainer
- Controls
- Sustain · Level · Attack
- Difficulty
- Intermediate
- Price
- see vendor
From the vendor
The original guitar compressor, still a favorite of guitarists after over 40 years. The Aurora makes several improvements to the original circuit as well as adding a few new features.
The Aurora Compressor is a clone of the Ross Compressor, which was a slightly tweaked MXR Dyna Comp with improved filtering and minor EQ adjustments. This PCB allows you to build either of those versions, along with a Keeley Compressor (which is a Ross with an attack knob) and a pretty close Janglebox (which is a Ross with a treble switch), or your own combination of the above.
The modifications to the original circuit include an attack knob (or a switch, if you can’t find the odd pot value), an input trim, and a treble switch.
Schematic
The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 50 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 20 | ||||
| R1 | 10k | 10k | ||
| R2 | 470k | 470k | ||
| R3 | 470k | 470k | ||
| R4 | 10k | 10k | ||
| R5 | 10k | 10k | ||
| R6 | 1M | 1M | ||
| R7 | 220k | 220k | ||
| R8 | 220k | 220k | ||
| R9 | 1M | 1M | ||
| R10 | 15k | 15k | ||
| R11 | 150k | 150k | ||
| R12 | 10k | 10k | ||
| R13 | 10k | 10k | ||
| R14 | 1M | 1M | ||
| R15 | 1M | 1M | ||
| R16 | 27k | 27k | ||
| R17 | 10k | 10k | ||
| R18 | 10k | 10k | ||
| R19 | 56k | 56k | ||
| R20 | 27k | 27k | ||
| Capacitors 16 | ||||
| C1 | 220pF | 220p | ||
| C2 | 10n | 10n | ||
| C3 | 1uF | 1u | ||
| C4 | 1uF | 1u | ||
| C5 | 1uF | 1u | ||
| C6 | 1uF | 1u | ||
| C7 | 10n | 10n | ||
| C8 | 1uF | 1u | ||
| C9 | 180pF | 180p | ||
| C10 | 10n | 10n | ||
| C11 | 10uF | 10u | ||
| C12 | 10n | 10n | ||
| C13 | 100n | 100n | ||
| C14 | 10n | 10n | ||
| C15 | 47uF | 47u | elec | |
| C16 | 1uF | 1u | ||
| Diodes 3 | ||||
| D2 | 1N914 | 1N914 | ||
| D3 | 1N914 | 1N914 | ||
| D1 | 1N4002 | 1N4002 | ||
| Transistors 5 | ||||
| Q1 | 2N5088 | 2N5088 | ||
| Q2 | 2N5088 | 2N5088 | ||
| Q3 | 2N5088 | 2N5088 | ||
| Q4 | 2N5088 | 2N5088 | ||
| Q5 | 2N5088 | 2N5088 | ||
| ICs 1 | ||||
| IC1 | CA3080 | CA3080 | ||
| Potentiometers 4 | ||||
| SUSTAIN | 500KC | C500k | Potentiometer | |
| LEVEL | 50KB | B50k | Potentiometer | |
| ATTACK | 150KC | C150k | Potentiometer | |
| RPD | 1M | 1M | Potentiometer | |
| LEDs 1 | ||||
| LED1 | into | INTO | ||
Other boards based on the Ross / Dyna Compressor
- Aurora Aion FX · 125B · $12.50