Enclosure not stated · 4 knobs
BB Preamp (PCB 2)
Based on the Xotic BB Preamp· 9 other boards clone it
- Category
- Preamp / Amp-in-a-box
- Price
- see vendorin stock
- Tags
- Xotic
Schematic
The schematic image is on the project page. Open it at PCBWay.
Parts list 31 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×9 | 10k | 10k | read from the schematic by eye | |
| ×4 | 1k | 1k | read from the schematic by eye | |
| ×4 | 4k7 | 4.7k | one is the LED resistor; read from the schematic by eye | |
| ×2 | 470k | 470k | read from the schematic by eye | |
| ×1 | 1M | 1M | read from the schematic by eye | |
| ×1 | 220 | 220 | read from the schematic by eye | |
| ×1 | 19k | 19k | read from the schematic by eye | |
| ×1 | 47k | 47k | read from the schematic by eye | |
| ×1 | 33k | 33k | read from the schematic by eye | |
| ×1 | 47 | 47 | read from the schematic by eye | |
| ×1 | 100k | 100k | read from the schematic by eye | |
| Capacitors 12 | ||||
| ×3 | 100n | 100n | read from the schematic by eye | |
| ×2 | 220n | 220n | read from the schematic by eye | |
| ×2 | 33n | 33n | read from the schematic by eye | |
| ×2 | 4n7 | 4.7n | read from the schematic by eye | |
| ×1 | 22n | 22n | read from the schematic by eye | |
| ×1 | 1u | 1u | read from the schematic by eye | |
| ×1 | 47n | 47n | read from the schematic by eye | |
| ×1 | 47p | 47p | read from the schematic by eye | |
| ×1 | 150p | 150p | read from the schematic by eye | |
| ×2 | 10u | 10u | electrolytic; read from the schematic by eye | |
| ×1 | 100u | 100u | electrolytic; read from the schematic by eye | |
| ×1 | 47u | 47u | electrolytic; read from the schematic by eye | |
| Diodes 2 | ||||
| ×2 | 1N914 | 1N914 | antiparallel clippers in gain-stage feedback; read from the schematic by eye | |
| ×1 | 1N5817 | 1N5817 | read from the schematic by eye | |
| Transistors 1 | ||||
| ×2 | 2N5088 | 2N5088 | input and output emitter followers; read from the schematic by eye | |
| ICs 1 | ||||
| ×2 | TL072 | TL072 | four op-amp sections drawn; read from the schematic by eye | |
| Potentiometers 4 | ||||
| Gain | B1M | B1M | Potentiometer | read from the schematic by eye |
| Bass | B50k | B50k | Potentiometer | read from the schematic by eye |
| Treble | B50k | B50k | Potentiometer | read from the schematic by eye |
| Volume | A100k | A100k | Potentiometer | read from the schematic by eye |
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