Enclosure not stated · 3 knobs
Runoffgroove UBE ScreamerVerified
Based on the Run Off Groove UBE Screamer· 2 other boards clone it
From the post
Another interesting circuit design by ROG; using a hex invrter to emulate a Tubescreamer Schematic and a writeup is avaiable HERE. Note that the resistor labelled "X" in the schematic is replaced by a 500k trimpot so you dial in the right amount of clean signal. Set it at around 100k for single coils, 220k for normal humbuckers or set it to 500k for hot humbuckers.
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 21 rows
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Check before you build · 1 value the reader of this layout was not sure of
- D3: drawn as D3 at the 9v input, legend calls the 1N5817 'D1' (legend typo assumed)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×5 | 100K | 100k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 330Ω | 330 | read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 150pF | 150p | read from the layout by eye | |
| ×1 | 1.5nF | 1.5n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×4 | 100nF | 100n | read from the layout by eye | |
| ×1 | 470nF | 470n | read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | legend lists it as D1; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | CD4049UBE | CD4049UBE | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | B500K | B500k | Potentiometer | read from the layout by eye |
| Tone | B500K | B500k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 500K | 500k | read from the layout by eye | |
Other boards based on the Run Off Groove UBE Screamer
- UBE Screamer Aion FX · 125B · $12.50
- Run Off Groove UBE Screamer Effects Layouts (blog)