Eurorack Dual Filter Module
Eurorack Dual Filter Module is an open source PCB design by Len42: a 2-layer, 50.3 × 108.2 mm board with 70 components (24 distinct parts). It is built around the TL074. Filed under audio.
Eurorack synthesizer module designs
Two variable formant or whatever filters
These filters do not self-oscillate at maximum resonance.
PCB layouts are provided in KiCad and gerber formats. A PCB layout for a drilled front panel (with no labels) is also included.
The PCBs that I used can be ordered from OSH Park. The designs are here: - Front panel - Controls board - Main board
Please note that I am a hobbyist, not a trained electronics engineer. No guarantees!
Built around
Parts list
70 components, 24 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | TL074 Texas Instruments | DIP-14_W7.62mm | U1, U2, U3 |
| 4 | WQP-PJ398 QingPu / Thonk | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J101, J102, J103, J104 |
| 1 | Conn_Front_Left_Top | PinSocket_1x10_P2.54mm_Vertical | J105 |
| 1 | Conn_Back_Right_Top | PinHeader_1x10_P2.54mm_Vertical | J106 |
| 1 | Conn_Front_Right | PinSocket_1x07_P2.54mm_Vertical | J107 |
| 1 | Conn_Back_Left | PinHeader_1x07_P2.54mm_Vertical | J108 |
| 1 | CONN_EURORACK_10 Conn_Eurorack_10 Wurth Elektronik | IDC-Header-Eurorack-10-TH | J109 |
| 2 | 50K Alpha | Potentiometer_Alpha_RD902F-40-00D_Dual_Vertical | RV1, RV4 |
| 2 | 50K Alpha | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV2, RV5 |
| 2 | 10K Alpha | Potentiometer_Alpha_RD902F-40-00D_Dual_Vertical | RV3, RV6 |
| 2 | SW_SP3T NKK | SW_SP3T_A24JP | SW1, SW2 |
| 4 | 1U KEMET | C_Rect_Kemet_L7.2mm_W2.5mm_P5mm | C1, C4, C6, C9 |
| 4 | 2N2 KEMET | C_Rect_Kemet_L7.2mm_W2.5mm_P5mm | C2, C3, C7, C8 |
| 2 | 22P TDK | C_Disc_D5.0mm_W2.5mm_P2.50mm | C5, C10 |
| 2 | 10U Panasonic | CP_Radial_D5.0mm_P2.50mm | C101, C102 |
| 6 | 100N TDK | C_Disc_D5.0mm_W2.5mm_P2.50mm | C103, C104, C105, C106, C107, C108 |
| 4 | 1M YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R14, R17, R30 |
| 4 | 100K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R15, R18, R31 |
| 8 | 10K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R7, R11, R13, R19, R23, R27, R29 |
| 4 | 22K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R20, R21 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R22 |
| 4 | 15K YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8, R9, R24, R25 |
| 4 | 68R YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R12, R26, R28 |
| 2 | 51R YAGEO | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R16, R32 |
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