Enclosure not stated · 4 knobs
Marshall JMC800 Pedal
Based on the Marshall JMC800 Pedal
- Category
- Preamp / Amp-in-a-box
- Controls
- Gain · Sensitivity · Tone · Volume
- Build
- Vero· 20×20· 28 cuts, 14 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Amp Emulator, Distortion, Marshall, Overdrive
From the post
Schematic is avaiable HERE.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 32 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×3 | 470K | 470k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×2 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 22Ω | 22 | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 390Ω | 390 | read from the layout by eye | |
| Capacitors 11 | ||||
| ×2 | 68nF | 68n | read from the layout by eye | |
| ×3 | 470nF | 470n | read from the layout by eye | |
| ×3 | 220nF | 220n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 150pF | 150p | read from the layout by eye | |
| ×3 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | D1-D4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | J201 | J201 | JFET; legend: J201, 2N5457, J113 etc. (SMD 2SK209G in original); read from the layout by eye | |
| ICs 2 | ||||
| IC1 | 4580 | 4580 | legend: 4580, 5532, 4558 etc (SMD 33178 in original); read from the layout by eye | |
| IC2 | 4580 | 4580 | legend: 4580, 5532, 4558 etc (SMD 33178 in original); read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | B25K | B25k | Potentiometer | read from the layout by eye |
| Sensitivity | A1M | A1M | Potentiometer | read from the layout by eye |
| Tone | B10K | B10k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |