4 layers241.7 × 56.7 mm
2 layers
Sound System
saper6569/Sound-System1- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 101
- Nets
- 74
- Pads
- 286
- Tracks, vias
- 921, 84
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Jul 2026
- Updated
- 16 Sep 2026
Overview
Sound System is an open-source printed circuit board by saper6569, from the saper6569/Sound-System repository on GitHub. It is a 2-layer board with 101 parts on 74 nets, routed with 921 tracks and 84 vias.
It is built around the OPA1656ID, XL1509-5.0 and L7812. Its parts include 43 resistors, 38 capacitors, 10 ICs, 2 fuses and 1 diode. It belongs with the audio and music boards of this library.
Main components
3
OPA1656ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 100mA 120dB 1mV 2 20pA 20pA 24V/us 2uV/℃ 3.9mA 4.3nV/√Hz@1kHz 4.5V~36V 53MHz Rail-to-rail output SOIC-8 FET Input Amplifiers ROHSTexas InstrumentsAudio AmplifiersXL1509-5.0
SOIC-8-40℃~+125℃ 1 150kHz 2A 2mA 4.5V~40V 5V Buck Buck Built-in Fixed No SOIC-8 DC-DC Converters ROHSUMWDC-DC Converters
L7812
TO-220ST0℃~+125℃@(Tj) 1 1.2A 12V 2V@(1A) 30V 71dB@(120Hz) 76uV Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
101| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C23, C24, C25, C26, C29, C30, C31, C32, C33, C34, C37, C38 |
| 8 | 1k | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R3, R5, R6, R41, R42, R43, R44, R45 |
| 7 | OPA1656ID | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4, U5, U6, U7, U8, U9, U10 |
| 6 | 10k | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R9, R12, R15, R16, R19, R20 |
| 6 | 47nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C13, C15, C27, C28, C35, C36 |
| 4 | 11k | Resistor_SMD:R_0402_1005Metric | R31, R32, R39, R40 |
| 4 | 18k | Resistor_SMD:R_0603_1608Metric | R27, R28, R35, R36 |
| 4 | 1k8 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R11, R14, R18, R22 |
| 4 | 22k | Resistor_SMD:R_0603_1608Metric | R29, R30, R37, R38 |
| 4 | 30k | Resistor_SMD:R_0603_1608Metric | R25, R26, R33, R34 |
| 4 | 3k3 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R10, R13, R17, R21 |
| 4 | 4.7nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14, C16, C18, C20 |
| 3 | 0.22uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C4 |
| 2 | 100k | Library:10k pot | RV2, RV3 |
| 2 | 100pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9, C10 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C11, C12 |
| 2 | 1nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C21, C22 |
| 2 | 22nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C17, C19 |
| 2 | 270 | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | R23, R24 |
| 2 | 3568 | Fuse:Fuseholder_Blade_Mini_Keystone_3568 | F1, F2 |
| 2 | 470uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C5, C8 |
| 1 | 1000 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R2 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 10k log | Library:10k pot | RV1 |
| 1 | 120 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R1 |
| 1 | 1N5821 | Diode_THT:D_DO-201AD_P15.24mm_Horizontal | D1 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 3.1k | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | R4 |
| 1 | 3.3nF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 47uH 3A | Library:4.7uH_inductor | L1 |
| 1 | 500k | Library:10k pot | RV4 |
| 1 | AudioJack4 | Library:headphone-in | J1 |
| 1 | CONN_1935174_PXC | Library:CONN_1935174_PXC | CONN |
| 1 | L7812 | Package_TO_SOT_SMD:TO-263-2 | U2 |
| 1 | LM337_TO220 | Package_TO_SOT_SMD:TO-252-2 | U1 |
| 1 | XL1509-5.0 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
Questions
What parts does the Sound System use?
101 parts, built around the OPA1656ID, XL1509-5.0 and L7812. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Sound System KiCad files?
From the saper6569/Sound-System repository on GitHub, at the commit this page was made from: the board is Kicad/SoundSystem.kicad_pcb and its schematic Kicad/2WCR.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sound System design in my own project?
Its repository states no licence, so its author keeps all rights: ask saper6569 before reusing the design.
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