Enclosure not stated · 2 knobs
Blackhawk Amplifiers Volume IVVerified
Based on the Blackhawk Amplifiers Volume IV
From the post
Traced by evilarsen.
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 19 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 470nF | 470n | read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | OC141 | OC141 | read from the layout by eye | |
| Q2 | BC108 | BC108 | read from the layout by eye | |
| Transformers 1 | ||||
| TR1 | 42TL019 | 42TL019 | audio transformer; read from the layout by eye | |
| Potentiometers 2 | ||||
| Gain | B100K | B100k | Potentiometer | read from the layout by eye |
| Boost | B10K | B10k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Ge/Si Sw | 3PDT on/on | 3PDT ON/ON | toggle; read from the layout by eye | |
| Voice Sw | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |