Enclosure not stated · 1 knob
Triungulo Lab Ensemble CrunchVerified
Based on the Triungulo Lab Ensemble Crunch
From the post
Here is a variation of the pre amp found in Roland/Boss CE-1. Note that the diode 1, 2 and the crunch switch is optional. Big thanks to Lorenzo for the schematic and for verifying this layout!
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 27 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 680Ω | 680 | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 470nF | 470n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 4 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| D2 | 12V Zener | 12V | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | optional; read from the layout by eye | |
| D4 | 1N4148 | 1N4148 | optional; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N2222A | 2N2222A | 2N2222A or 2SC900; read from the layout by eye | |
| ICs 2 | ||||
| IC1 | TL071 | TL071 | read from the layout by eye | |
| IC2 | ICL7660S | ICL7660S | read from the layout by eye | |
| Potentiometers 1 | ||||
| Level | A50K | A50k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| High/Low | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
| Crunch | SPST | SPST | optional; read from the layout by eye | |