125B · 5 knobs
From the vendor
Do-it-yourself PCB for a pedal-ized take on the Music Man HD130. Similar to (but not the same as) The Bard. Includes a 3PDT daughterboard.
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 46 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| R1 | 1M | 1M | Resistor, Metal Film 1/8W | |
| R10 | 100R | 100 | Resistor, Metal Film 1/8W | |
| R11 | 4.7K | 4.7k | Resistor, Metal Film 1/8W | |
| RX1 | 4.7K | 4.7k | Resistor, Metal Film 1/8W | |
| CLR | 4.7K | 4.7k | Resistor, Metal Film 1/8W | |
| R2 | 68K | 68k | Resistor, Metal Film 1/8W | |
| R3 | 220K | 220k | Resistor, Metal Film 1/8W | |
| R4 | 100K | 100k | Resistor, Metal Film 1/8W | |
| R7 | 100K | 100k | Resistor, Metal Film 1/8W | |
| R8 | 100K | 100k | Resistor, Metal Film 1/8W | |
| R5 | 10K | 10k | Resistor, Metal Film 1/8W | |
| R6 | 10K | 10k | Resistor, Metal Film 1/8W | |
| R9 | 22K | 22k | Resistor, Metal Film 1/8W | |
| RX2 | 330K | 330k | Resistor, Metal Film 1/8W | |
| Capacitors 22 | ||||
| C10 | 3.3n | 3.3n | Capacitor, Box Film 5mm LS | |
| C11 | 220n | 220n | Capacitor, Box Film 5mm LS | |
| C13 | 470n | 470n | Capacitor, Box Film 5mm LS | |
| C14 | 1u | 1u | Capacitor, Box Film 5mm LS | |
| C16 | 1u | 1u | Capacitor, Box Film 5mm LS | |
| C6 | 100n | 100n | Capacitor, Box Film 5mm LS | |
| C9 | 100n | 100n | Capacitor, Box Film 5mm LS | |
| C12 | 100n | 100n | Capacitor, Box Film 5mm LS | |
| CX1 | 15n | 15n | Capacitor, Box Film 5mm LS | |
| C2 | 100u | 100u | Capacitor, Elec 6.3mm dia 2.5mm LS 25V min | |
| C5 | 100u | 100u | Capacitor, Elec 6.3mm dia 2.5mm LS 25V min | |
| C7 | 100p | 100p | Capacitor, MLCC NP0 25V min 5mm LS | |
| C8 | 100p | 100p | Capacitor, MLCC NP0 25V min 5mm LS | |
| CX2 | 100p | 100p | Capacitor, MLCC NP0 25V min 5mm LS | |
| CX3 | 33p | 33p | Capacitor, MLCC NP0 25V min 5mm LS | |
| C1 | 100n | 100n | Capacitor, MLCC X7R 25V min 2.5mm LS | |
| C3 | 100n | 100n | Capacitor, MLCC X7R 25V min 2.5mm LS | |
| CB1 | 100n | 100n | Capacitor, MLCC X7R 25V min 2.5mm LS | |
| CB2 | 100n | 100n | Capacitor, MLCC X7R 25V min 2.5mm LS | |
| CB3 | 100n | 100n | Capacitor, MLCC X7R 25V min 2.5mm LS | |
| CB4 | 100n | 100n | Capacitor, MLCC X7R 25V min 2.5mm LS | |
| C4 | 10u | 10u | Capacitor, MLCC X7R 25V min 5mm LS | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | Diode, Shottky | |
| ICs 3 | ||||
| IC1 | RC4558 | RC4558 | IC, Op Amp Dual | |
| IC2 | LM307 | LM307 | IC, Op Amp Single | |
| IC3 | ICL7660S | ICL7660S | IC, Charge Pump | |
| Potentiometers 5 | ||||
| Gain | A10k | A10k | Potentiometer, 16mm PCB Mount Right Angle | |
| Vol | A10k | A10k | Potentiometer, 16mm PCB Mount Right Angle | |
| Bass | A25k | A25k | Potentiometer, 16mm PCB Mount Right Angle | |
| Treb | B25k | B25k | Potentiometer, 16mm PCB Mount Right Angle | |
| Mid | B5k | B5k | Potentiometer, 16mm PCB Mount Right Angle | |
| Switches 1 | ||||
| Byp | 3PDT | 3PDT | 3PDT Footswitch, solder lug | |