Compact 6HP VCO for Eurorack Modular synthesizersDesigned by PM Foundations in United States of America
Please always use genuine ICs.
Shipping times to Europe and Australia/New Zealand are extremely long due to circumstances beyond our control. Please ask about Priority Shipping.
This is a compact Triangle Core VCO. You can install your classic CA3080 OTA chips or use a modern LM13700 instead. The PCB has the option to use either chip. IMPORTANT NOTE This is a PCB and Pan...Read More…
This is a compact Triangle Core VCO. You can install your classic CA3080 OTA chips or use a modern LM13700 instead. The PCB has the option to use either chip.
This is a PCB and Panel set only. One high quality PCB and one front panel ONLY are included. You will need to purchase your own components and build your own module. Comprehensive build instructions and BOMs are provided to help you source the components needed and we even provide links to shopping carts to simplify sourcing those components. Some product photos above show COMPLETED build.
This VCO has been shrunk to the minimum size possible so you can maximize the remaining space in your rack, while packing in a wealth of functionality:
This is a low component count project so you can have high quality VCOs in your rack with minimum expense.
Build it yourself - This is a set of one high quality PCB and front panel ONLY for users who want to purchase their own components and build their own module. Some product photos above show COMPLETED build.
This module will fit perfectly into a 6HP Eurorack space.
Comprehensive manuals, parts lists and component shopping carts are provided in the documentation link for building, testing and using the module.
A note on accuracy If you want a highly accurate tracking VCO, please ensure you use very well matched transistors and also glue the thermistor and the two transistors together. The slight differences in temperature coefficients of the transistors can make the oscillator difficult to tune. If you don't need a highly accurate oscillator, you can use any transistors and even use a resistor instead of the thermistor. Here's a comment from one of our builders:
"I ended up swapping the transistors from some I got in a Mouser order vs the ones I matched from a Chinese retailer. Found some that matched less then 1mv difference and Low and behold, I can tune it now!" From Dayne, Grand Forks, BC.
So: you choose.
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Shipping times to Europe and Australia/New Zealand are extremely long due to circumstances beyond our control and in some cases can take up to 2 months. Please ask about Priority Shipping if you would like a faster service.
Elton | Aug. 3, 2020
Morgan | March 28, 2020
Mathew | Feb. 19, 2020
Austin | Jan. 15, 2020
Kristofer | Jan. 1, 2020
Morgan | Oct. 25, 2019
Costantino | Oct. 18, 2019
Vidar | Dec. 20, 2018
Ralphy | July 12, 2018
Quinn | April 19, 2018
Ken | Jan. 31, 2018
Randy | Dec. 8, 2017
Erik | Nov. 9, 2017
Morten | June 20, 2017
Mike | Feb. 19, 2017
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