1590A · 1 knob
Dan Armstrong Orange SqueezerVerified
Based on the Dan Armstrong Orange Squeezer· 13 other boards clone it
- Category
- Compressor
- Controls
- Level
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Bass, Compressor, Dan Armstrong
From the post
The Dan Armstrong Orange Squeezer compressor has become a staple among the DIY community. Original units plugged straight into the guitar, with no external controls except for an on/off switch. This layout has the level control offboard, but the bias is a 10k trimpot, but could easily be wired offboard as well. And you should be able to squeeze it into a 1590A. (See what I did there? :D)
Edit:
Here are a few mods if you want to use it on bass. Some say stock is best, others say to uses these substitutions. As always, YMMV.
• Swap the output cap from 4.7µ to 1µ (between the 390k and 1.5k resistors, below the IC)
• Swap bleeder cap from 4.7µ to 10µ (cap connected to the 1N34 diode)
• Reduce the feedback resistor from 220k to 200k (between Q2 and the IC)
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 20 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 10K at top right (columns K, rows A-D): drawn as a three-pad blue box, read as a trimmer rather than a resistor
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×3 | 470K | 470k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×1 | 2.4K | 2.4k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 4.7M | 4.7M | read from the layout by eye | |
| ×1 | 390K | 390k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×4 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×1 | 1N34A | 1N34A | printed 1N34a; read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q2 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | 4558 | 4558 | read from the layout by eye | |
| Potentiometers 1 | ||||
| Level | A10K | A10k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
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