Enclosure not stated · 4 knobs
Death By Audio Assault System - Op Amp channelVerified
Based on the Death By Audio Assault System - Op Amp channel
From the post
...and here is the op amp channel. Schematic (might to a complete layout for both channels if there is interest. It will require some extra offboard wiring due to two separate bypass switches and an order switch....)
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 20 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×3 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×3 | 100K | 100k | read from the layout by eye | |
| ×1 | 4.7M | 4.7M | read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 220pF | 220p | read from the layout by eye | |
| ×1 | 12nF | 12n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 33nF | 33n | read from the layout by eye | |
| ×4 | 470nF | 470n | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | Germanium | GERMANIUM | D1, D2; legend says only Germanium; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Drive | B1M | B1M | Potentiometer | read from the layout by eye |
| Feedback | B1M | B1M | Potentiometer | read from the layout by eye |
| Filter | B1M | B1M | Potentiometer | dual; read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Feedback Sw | SPST | SPST | SPST or momentary footswitch; read from the layout by eye | |