Enclosure not stated
MXR Hot Tubes
Based on the MXR Hot Tubes· 1 other board clones it
- Category
- Overdrive· Distortion Boost and Overdrive
- Price
- see vendor
- Tags
- Distortion Boost and Overdrive
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 26 rows
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Check before you build · 2 values the reader of this schematic was not sure of
- drive pot: value unknown on the drawing, 100k guessed
- output pot: value unknown on the drawing, 10K guessed
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×1 | 1M | 1M | input pulldown; read from the schematic by eye | |
| ×1 | 120k | 120k | input bias to Vref; read from the schematic by eye | |
| ×2 | 20k | 20k | second op amp inputs; read from the schematic by eye | |
| ×1 | 75k | 75k | second op amp feedback; read from the schematic by eye | |
| ×2 | 220k | 220k | Vref divider; read from the schematic by eye | |
| ×1 | 8k2 | 8.2k | first inverter input; read from the schematic by eye | |
| ×1 | 150k | 150k | first inverter feedback; read from the schematic by eye | |
| ×1 | 1m5 | 1.5M | first inverter input to ground; read from the schematic by eye | |
| ×1 | 220k | 220k | second inverter feedback; read from the schematic by eye | |
| ×1 | 2m2 | 2.2M | second inverter input to ground; read from the schematic by eye | |
| ×1 | 470k | 470k | third inverter input; read from the schematic by eye | |
| ×1 | 1m | 1M | third inverter feedback (1M); read from the schematic by eye | |
| ×1 | 15k | 15k | output series; read from the schematic by eye | |
| Capacitors 9 | ||||
| ×2 | 0.1uF | 100n | input coupling; inverter section coupling; read from the schematic by eye | |
| ×1 | 47pF | 47p | op amp input to ground; read from the schematic by eye | |
| ×2 | 22pF | 22p | second op amp feedback; first inverter feedback; read from the schematic by eye | |
| ×1 | 1uF | 1u | electrolytic, second op amp + input to ground; read from the schematic by eye | |
| ×1 | 30uF | 30u | electrolytic supply filter; read from the schematic by eye | |
| ×1 | 1uF | 1u | electrolytic Vref filter; read from the schematic by eye | |
| ×1 | 0.015uF | 15n | inverter coupling; read from the schematic by eye | |
| ×1 | 0.22uF | 220n | inverter coupling; read from the schematic by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic output coupling; read from the schematic by eye | |
| ICs 2 | ||||
| ×1 | 4558 | 4558 | dual op amp; drawing says dual 741 or 4558; read from the schematic by eye | |
| ×1 | CD4049 | CD4049 | hex inverter, three sections used; read from the schematic by eye | |
| Potentiometers 2 | ||||
| ×1 | 100k | 100k | Potentiometer | drive, wired as variable resistor; drawing says unknown value, 100k?; read from the schematic by eye |
| ×1 | 10K | 10k | Potentiometer | output level; drawing says unknown value, 10K?; read from the schematic by eye |
Other boards based on the MXR Hot Tubes
- MXR Hot Tubes (PDF) Experimentalists Anonymous