Enclosure not stated · 1 knob
Bass Direct BoxVerified
Based on the Bass Direct Box
From the post
Got a request for the DI portion of the Hartke LH1000 bass amp. This is more or less that, but with a simplified power section. In the amp this runs off a bipolar 15 volt supply, but I would think it would also work with regular 9 volt supply. There's not an unbalanced output, but if you need to add that you can probably add it off pin 3 of the XLR. Schematic for reference.
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 17 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 270Ω | 270 | read from the layout by eye | |
| ×2 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 3K | 3k | read from the layout by eye | |
| ×1 | 6.8K | 6.8k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×4 | 100K | 100k | read from the layout by eye | |
| ×4 | 2.2M | 2.2M | read from the layout by eye | |
| Capacitors 7 | ||||
| ×5 | 100pF | 100p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×2 | 1uF | 1u | box film; read from the layout by eye | |
| ×1 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 2 | ||||
| ×1 | NE5532 | NE5532 | printed "5532"; read from the layout by eye | |
| ×1 | TL072 | TL072 | read from the layout by eye | |