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Electro Harmonix Soul Preacher
Based on the Electro-Harmonix Soul Preacher· 1 other board clones it
- Category
- Compressor· Compressors Gates and Limiters
- Price
- see vendor
- Tags
- Compressors Gates and Limiters
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 32 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×3 | 270k | 270k | Q1 collector, Q1 base to ground, IC1a + input; read from the schematic by eye | |
| ×1 | 680k | 680k | read from the schematic by eye | |
| ×3 | 4k7 | 4.7k | Q1 emitter; two in the 4.5V reference divider; read from the schematic by eye | |
| ×1 | 100k | 100k | read from the schematic by eye | |
| ×1 | 220k | 220k | read from the schematic by eye | |
| ×1 | 1k | 1k | read from the schematic by eye | |
| ×5 | 10k | 10k | IC1a feedback, output series, after the 1N3666, two at the IC1b inputs; read from the schematic by eye | |
| ×1 | 1M | 1M | read from the schematic by eye | |
| ×1 | 47k | 47k | read from the schematic by eye | |
| ×1 | 20k | 20k | read from the schematic by eye | |
| ×1 | 4M7 | 4.7M | read from the schematic by eye | |
| ×1 | 15k | 15k | supply section; read from the schematic by eye | |
| ×1 | 220 | 220 | supply input; read from the schematic by eye | |
| ×1 | 3k9 | 3.9k | supply section; read from the schematic by eye | |
| Capacitors 8 | ||||
| ×4 | 0.1uf | 100n | input, after the 220k, IC1a input, supply; read from the schematic by eye | |
| ×1 | 330pf | 330p | IC1a feedback; read from the schematic by eye | |
| ×1 | 0.15uf | 150n | switched in by S1; read from the schematic by eye | |
| ×2 | 1uf | 1u | one 25V coupling cap at Q1, one 25V electrolytic at the 4.5V reference; read from the schematic by eye | |
| ×1 | 1uf | 1u | 35V tantalum, envelope timing at Q2; read from the schematic by eye | |
| ×2 | 10uf | 10u | 25V tantalum: IC1a gain leg and output coupling; read from the schematic by eye | |
| ×2 | 10uf | 10u | 16V: supply filter and IC1b; read from the schematic by eye | |
| ×1 | 100uf | 100u | 25V supply filter; read from the schematic by eye | |
| Diodes 1 | ||||
| ×2 | 1N3666 | 1N3666 | envelope rectifiers; read from the schematic by eye | |
| Transistors 5 | ||||
| Q1 | ? | ? | NPN, drawing says type unknown; read from the schematic by eye | |
| Q2 | ? | ? | bipolar, drawing says type unknown; read from the schematic by eye | |
| Q3 | ? | ? | supply pass transistor, drawing says type unknown; read from the schematic by eye | |
| Q4 | ? | ? | 4.5V reference buffer, drawing says type unknown; read from the schematic by eye | |
| J1 | ? | ? | JFET used as the gain-control element; drawing says type unknown; read from the schematic by eye | |
| ICs 1 | ||||
| IC1 | 4558 | 4558 | dual op amp, IC1a and IC1b; read from the schematic by eye | |
| Potentiometers 2 | ||||
| ×1 | B100k | B100k | Potentiometer | drawn '100k Linear' in IC1a feedback (sustain); not named; read from the schematic by eye |
| ×1 | A10k | A10k | Potentiometer | drawn '10k Log' output level; not named; read from the schematic by eye |
| Switches 1 | ||||
| S1 | SPDT | SPDT | switches the 0.15uf cap at the output (tone); read from the schematic by eye | |
Other boards based on the Electro-Harmonix Soul Preacher
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