Enclosure not stated · 2 knobs
MXR DynaCompVerified
Based on the MXR Dyna Comp· 10 other boards clone it
- Category
- Compressor
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Compressor, MXR
From the post
Here's the classic DynaComp compressor from MXR. This frequently cloned and copied effect has been an industry standard since it was introduced in the 70s. It uses the CA3080 IC, which can be a bit expensive and/or difficult to source as it is a rather obsolete chip. It might be a good idea to use tantalum capacitors in the place of the 1µ electrolytic caps for noise purposes. You can mount the pots directly to the board using either long leg right angle PCB pots or these more normal ones.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×5 | 1M | 1M | read from the layout by eye | |
| ×2 | 27K | 27k | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×1 | 2M | 2M | read from the layout by eye | |
| Capacitors 6 | ||||
| ×5 | 10nF | 10n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×3 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 1N4148 | 1N4148 | D1, D2; read from the layout by eye | |
| ×1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| ×5 | 2N3904 | 2N3904 | Q1-5; legend: 2N3904, 2N5088, etc; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | CA3080E | CA3080E | read from the layout by eye | |
| Potentiometers 2 | ||||
| Sustain | C500K | C500k | Potentiometer | read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 2K | 2k | read from the layout by eye | |
Other boards based on the MXR Dyna Comp
- MXR Dyna Comp Dirtbox Layouts
- MXR Dynacomp Experimentalists Anonymous
- MXR Dynacomp Experimentalists Anonymous
- Dyna Comp Guitar-Electronics.eu · €6.25
- Ambulator Madbean · 1590B · $10.00
- Li'l comp Moody Sounds · kr695.00
- Ducky Comp v2.3 On The Road Effects · $14.99
- Ducky Comp v2.4 On The Road Effects · $14.99
- MXR Dyna Comp Tagboard Effects · 1590B
- MXR DynaComp Tonepad · $10.00