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Weston Precision Audio 2VL1, Manual

The Weston Precision Audio 2VL1 is a high-quality audio device that delivers exceptional sound precision. To get the most out of your device, be sure to download the free manual available at manualshive.com. This manual will provide you with helpful information on how to optimize your audio experience.

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SCHEMATICS (PCB-A)




© 2019 Weston Precision Audio

10

Summary of Contents for 2VL1

Page 1: ...2019 Weston Precision Audio 1 2VL1 Dual VCO LFO DIY Eurorack Module Weston Precision Audio Designed In Portland Oregon Revision 01 July 16 2019...

Page 2: ...outputs Pulse Saw LFO outputs Triangle Square VCO1 2 inputs 1 Volts Octave Pulse Width Modulation Linear Frequency Modulation VCO 2 will default to using the VCO 1 Volts oct input until a jack is inst...

Page 3: ...B M3 Hex Standoff 4mm x 12mm L Typ Phillips Machine Screw M3 x 6mmL Typ Front Panel Davies Clone Knobs See build instructions for color requirements Round Nuts For Thonkiconn 3 5mm Jacks Typ Potentiom...

Page 4: ...R14 R19 2 5 1K Resistor_THT R_Axial_DIN0207_L6 3mm_D2 5mm_P7 62mm_Horizontal R15 R17 2 8 45K Resistor_THT R_Axial_DIN0207_L6 3mm_D2 5mm_P7 62mm_Horizontal R18 R21 2 33K Resistor_THT R_Axial_DIN0207_L...

Page 5: ...7 5K Resistor_THT R_Axial_DIN0207_L6 3mm_D2 5mm_P7 62mm_Horizontal R51 1 37 4K Resistor_THT R_Axial_DIN0207_L6 3mm_D2 5mm_P7 62mm_Horizontal R52 R53 2 150K Resistor_THT R_Axial_DIN0207_L6 3mm_D2 5mm_...

Page 6: ...Thonkiconn Mono Jack J23 1 PLS2 OUT Jacks Thonkiconn Mono Jack J24 1 LFO TRI OUT Jacks Thonkiconn Mono Jack J25 1 LFO SQ OUT Jacks Thonkiconn Mono Jack J3 1 PINHEADER IO3 Connector_PinHeader_2 54mm P...

Page 7: ...ed about zero minimize DC offset value 3 Monitor VCO1 saw output with your O scope and adjust SAW1 SHAPE trim pot to connect the halves of the saw 4 Monitor LFO triangle output with your DMM or O scop...

Page 8: ...e transistor circuit and 150uF cap on PCB C help mitigate these ripples to a great degree but it s still best to avoid high current LEDs as well Belt and suspenders Finally install the knobs The pictu...

Page 9: ...REF PCB Pics Finished 2019 Weston Precision Audio 9...

Page 10: ...7 8 U5D LM13700 SYNC PULSE GENERATOR C3 0 01u 12V GND 12V C4 0 01u GND 11 10 U4E 40106 13 12 U4F 40106 R33 75K R32 47K R31 47K 1 2 3 TP5 100K LFO TRI OFFSET TRIM 12V R34 1K R35 20K C14 2 2u Film GND...

Page 11: ...R66 100K R75 191K GND R78 1K R79 1K R55 2K R63 2M R71 3K R73 2 2K GND PLS2 COMPARATOR R53 150K GND R49 402K R50 100K SAW2 SHAPE TRIM 1 2 3 TP10 100K 12V TRI2 OFFSET TRIM SQ2RAW TRI2RAW SAW2 TRI2 PULS...

Page 12: ...ND C28 0 47u 1 2 3 J17 FM2 IN GND 1 2 3 J13 VCO2 V OCT IN R84 100K GND 1 2 3 RV3 100K LIN 12V 12V VCO2 COARSE R85 164K 1 2 3 RV4 100K LIN 12V 12V VCO2 FINE R86 3 9M 1 2 3 4 SW1 SYNC SOURCE GND R89 10K...

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