1590B · 3 knobs
Darkglass Microtubes B3KVerified
Based on the Darkglass Microtubes B3K· 7 other boards clone it
From the post
Gotten a few requests for this one and I finally got around to doing it. It's a bit of a hodge-podge–3 dual opamps, a hex inverter, and a JFET mu-amp array. Definitely not fitting this in a 1590B, but will fit nicely in a 1590BB with the pots board mounted. Info and schematic 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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 35 rows
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Check before you build · 2 values the reader of this layout was not sure of
- 200K at row O near the JFETs: printed clearly, unusual value
- the two 1uF capacitors are drawn as grey rounded boxes rather than round cans; type (film or electrolytic) not stated
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×7 | 1M | 1M | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×3 | 470K | 470k | read from the layout by eye | |
| ×3 | 100K | 100k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×2 | 6.8K | 6.8k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 200K | 200k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| Capacitors 12 | ||||
| ×2 | 22pF | 22p | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 680pF | 680p | read from the layout by eye | |
| ×2 | 1nF | 1n | read from the layout by eye | |
| ×3 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×6 | 22nF | 22n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×2 | 1uF | 1u | drawn as a box, not a round can; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 1N4148 | 1N4148 | printed 4148; read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| Transistors 1 | ||||
| ×2 | J201 | J201 | JFET; named on the wiring diagram only; read from the layout by eye | |
| ICs 2 | ||||
| ×3 | TL072 | TL072 | read from the layout by eye | |
| ×1 | 4049UBE | 4049UBE | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | C100K | C100k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
| Blend | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Attack | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |
| Grunt | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |
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