2 layers185.5 × 100 mm
Power amp
SL20032/Modular-BiAMP
Sample Modular Bi-AMP designed to work with Technics HD501 speakers
167 parts
2 layers100 × 100 mm
Crossover pcb
SL20032/Modular-BiAMPSample Modular Bi-AMP designed to work with Technics HD501 speakers
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 184
- Nets
- 84
- Pads
- 466
- Tracks, vias
- 978, 299
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Apr 2026
- Updated
- 20 Apr 2026
Overview
Crossover pcb is an open-source printed circuit board by SL20032, from the SL20032/Modular-BiAMP repository on GitHub. It is a 2-layer board of 100 × 100 mm with 184 parts on 84 nets, routed with 978 tracks and 299 vias.
It is built around the TPA6120A2RGY. Its parts include 82 capacitors, 66 resistors, 11 ICs, 9 connectors and 2 diodes. It belongs with the audio and music boards of this library.
Main components
1README
README.mdModular-BiAMP
Sample Modular Bi-AMP designed to work with Technics HD501 speakers (bc ampilifre in mine died). Project in active development.
Modules
- Crosover PCB - Simple Active opamp based crosover providing 80db/dec attenuation. Components selected for 20 Hz to 3kHz passband for low freq part and 3kHz to 20kHz passband for high freq part.
- Power Amp PCB - Amplifire (AB-class) board using LM3886 for low frequence part (woofers) and LM4766 for high Frequency parts (tweeters)
Fotos
Parts
184| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C13, C14, C19, C20, C21, C22, C23, C24, C29, C30, C31, C32, C37, C38 +8 |
| 14 | 27n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C9, C10, C41, C42, C47, C48, C51, C52, C55, C56, C59, C60, C63, C64 |
| 12 | 100n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C43, C44, C49, C50, C53, C54, C57, C58, C61, C62, C65, C66 |
| 12 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6, C39, C40, C45, C46, C77, C78, C79, C80, C81, C82 |
| 8 | 10k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10, R13, R14, R19, R20, R21, R22 |
| 8 | 1k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R11, R12, R15, R16, R17, R18 |
| 8 | 28k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25, R26, R29, R30, R35, R36, R37, R38 |
| 8 | 6k34 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23, R24, R27, R28, R31, R32, R33, R34 |
| 8 | ADA4511 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U1, U2, U4, U5, U6, U7, U8, U9 |
| 5 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H1, H2, H3, H4, H5 |
| 4 | 10 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R55, R71 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R61, R62, R63, R64 |
| 4 | 2n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C15, C16, C35, C36 |
| 4 | BYPASS | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5, JP6, JP7, JP8 |
| 2 | 1.2n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C33, C34 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R56, R72 |
| 2 | 130k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R53, R54 |
| 2 | 1k05 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R47, R48 |
| 2 | 2.2n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C17, C18 |
| 2 | 2.7n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C25, C26 |
| 2 | 20k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R41, R42 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R65, R66 |
| 2 | 22k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R59, R60 |
| 2 | 2k74 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R51, R52 |
| 2 | 309k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R45, R46 |
| 2 | 30n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C11, C12 |
| 2 | 4.7n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C27, C28 |
| 2 | 4.7u | Capacitor_THT:C_Rect_L18.0mm_W7.0mm_P15.00mm_FKS3_FKP3 | C67, C68 |
| 2 | 432 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R39, R40 |
| 2 | 47uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1, C2 |
| 2 | 48k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R49, R50 |
| 2 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R57, R58 |
| 2 | 68p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C69, C70 |
| 2 | 6k73 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R43, R44 |
| 2 | G6K-2 | Relay_THT:Relay_DPDT_Omron_G6K-2P | K3, K4 |
| 2 | NMOS | custom_ic:SOT-23-Transistor | Q3, Q6 |
| 2 | TBD | Diode_SMD:D_SOD-123 | D3, D6 |
| 2 | TBD | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U3, U10 |
| 2 | ~ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R73, R74 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Piher_PC-16_Dual_Horizontal | RV1 |
| 1 | AUX input | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J1 |
| 1 | CTRL | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | Headphones | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J5 |
| 1 | INT input | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J2 |
| 1 | L HI | Connector_JST:JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J9 |
| 1 | L LO | Connector_JST:JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J7 |
| 1 | PWR IN | Connector_JST:JST_NV_B03P-NV_1x03_P5.00mm_Vertical | J4 |
| 1 | R HI | Connector_JST:JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J8 |
| 1 | R LO | Connector_JST:JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J6 |
| 1 | TPA6120A2 | custom_ic:SOIC-20-EP | U11 |
Questions
How big is the Crossover pcb PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Crossover pcb use?
184 parts, built around the TPA6120A2RGY. 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 Crossover pcb KiCad files?
From the SL20032/Modular-BiAMP repository on GitHub, at the commit this page was made from: the board is crossover_pcb/PCB.kicad_pcb and its schematic Power_AMP_pcb/Pwr_AMP_Hi.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Crossover pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask SL20032 before reusing the design.
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