125B · 5 knobs
PedalPCB· PCB140
Ginsly’s Acoustic Preamp
Based on the K&K Sound Pure Preamp
- Category
- Preamp / Amp-in-a-box· Preamps
- Price
- $8.00in stock
- Tags
- 125B, Acoustic, Piezo
From the vendor
Controls
• Level
• Gain
• Treble
• Mid
• Bass
Details
• Designed for a 125B enclosure with top-mounted jacks
The company, product and service names used in this web site are for comparative purposes only. All trademarks and registered trademarks are the property of their respective owners. This product is not manufactured or distributed by K&K Sound, maker of the K&K Sound Pure Preamp.
PedalPCB is in no way affiliated with K&K Sound.
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 33 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 16 | ||||
| R1 | 1M | 1M | Resistor, 1/4W | |
| R2 | 10K | 10k | Resistor, 1/4W | |
| R3 | 1M | 1M | Resistor, 1/4W | |
| R4 | 1M | 1M | Resistor, 1/4W | |
| R5 | 10K | 10k | Resistor, 1/4W | |
| R6 | 10K | 10k | Resistor, 1/4W | |
| R7 | 15K | 15k | Resistor, 1/4W | |
| R8 | 18K | 18k | Resistor, 1/4W | |
| R9 | 1K | 1k | Resistor, 1/4W | |
| R10 | 10K | 10k | Resistor, 1/4W | |
| R11 | 1K | 1k | Resistor, 1/4W | |
| R12 | 10K | 10k | Resistor, 1/4W | |
| R13 | 10R | 10 | Resistor, 1/4W | |
| R101 | 100K | 100k | Resistor, 1/4W | |
| R102 | 100K | 100k | Resistor, 1/4W | |
| CLR | 4K7 | 4.7k | Resistor, 1/4W | * LED current limiting resistor |
| Capacitors 10 | ||||
| C1 | 47n | 47n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 1u | 1u | Electrolytic capacitor, 5mm | |
| C3 | 470n | 470n | Film capacitor, 7.2 x 5.0mm | |
| C4 | 3n3 | 3.3n | Film capacitor, 7.2 x 2.5mm | |
| C5 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C6 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C7 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C8 | 1u | 1u | Electrolytic capacitor, 5mm | |
| C100 | 100u | 100u | Electrolytic capacitor, 5mm | |
| C101 | 100u | 100u | Electrolytic capacitor, 5mm | |
| Diodes 1 | ||||
| D100 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| ICs 1 | ||||
| IC1 | TL082 | TL082 | Dual op-amp, DIP8 | |
| Potentiometers 5 | ||||
| LEVEL | A100K | A100k | 16mm right-angle PCB mount pot | |
| GAIN | B100K | B100k | 16mm right-angle PCB mount pot | |
| TREBLE | B100K | B100k | 16mm right-angle PCB mount pot | |
| MID | B100K | B100k | 16mm right-angle PCB mount pot | |
| BASS | B100K | B100k | 16mm right-angle PCB mount pot | |