Enclosure not stated · 3 knobs
Electro Harmonix Hot TubesVerified
Based on the Electro-Harmonix Hot Tubes· 8 other boards clone it
From the post
And a modified layout for more gain on tap for high gain fuzz sounds.
75k feedback resistor right to IC1 is changed to a 250k pot and 1000nF cap is connected straight into 8,2k resistor which is connected to the first hex inverter.
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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Check before you build · 1 value the reader of this layout was not sure of
- 430K at the right edge (column 18, rows G-I): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| ×2 | 47K | 47k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×1 | 1.2K | 1.2k | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 430K | 430k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 1.8M | 1.8M | read from the layout by eye | |
| ×1 | 8.2K | 8.2k | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×1 | 150Ω | 150 | read from the layout by eye | |
| ×1 | 120K | 120k | read from the layout by eye | |
| ×2 | 20K | 20k | read from the layout by eye | |
| ×1 | 75K | 75k | read from the layout by eye | |
| Capacitors 10 | ||||
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×1 | 120nF | 120n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×1 | 150nF | 150n | read from the layout by eye | |
| ×1 | 39pF | 39p | read from the layout by eye | |
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 180pF | 180p | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×3 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | RC4558 | RC4558 | read from the layout by eye | |
| IC2 | CD4049UBE | CD4049UBE | read from the layout by eye | |
| Potentiometers 3 | ||||
| Overdrive | B2M | B2M | Potentiometer | read from the layout by eye |
| Tone | B10K | B10k | Potentiometer | read from the layout by eye |
| Volume | A10K | A10k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
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