Enclosure not stated · 5 knobs
Ampeg SS-140c Channel A Pre AmpVerified
Based on the Ampeg SS-140c Channel A Pre Amp
- Category
- Distortion
- Build
- Vero
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Ampeg, Distortion, Pre Amp
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 39 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×1 | 47Ω | 47 | read from the layout by eye | |
| ×2 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×3 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 7.5K | 7.5k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×3 | 270K | 270k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| R18 | ? | ? | value not given; legend: stock value is 3.3K, try 10K-12K for more output; read from the layout by eye | |
| Capacitors 15 | ||||
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 330pF | 330p | read from the layout by eye | |
| ×1 | 560pF | 560p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×4 | 47nF | 47n | read from the layout by eye | |
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 1uF | 1u | film; read from the layout by eye | |
| ×3 | 2.2uF | 2.2u | electrolytic, bipolar (BP); read from the layout by eye | |
| ×2 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 3.3uF | 3.3u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| ×4 | 6.8V Zener | 6V8 | D1-D4; read from the layout by eye | |
| D5 | 15V Zener | 15V | read from the layout by eye | |
| D6 | 1N5819 | 1N5819 | read from the layout by eye | |
| ICs 3 | ||||
| IC1 | 4558 | 4558 | read from the layout by eye | |
| IC2 | 4558 | 4558 | read from the layout by eye | |
| IC3 | LT1054 | LT1054 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Low | C100K | C100k | Potentiometer | read from the layout by eye |
| High | C50K | C50k | Potentiometer | legend: try 50kB for better sweep; read from the layout by eye |
| Mid | A50K | A50k | Potentiometer | read from the layout by eye |
| Gain | A10K | A10k | Potentiometer | read from the layout by eye |
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |