I was fortunate to receive funding to renovate Kurenniemi’s Integrated Synthesizer in 2017. The work began in the fall of 2017 and concluded in the summer of 2018. This is not a comprehensive record of the process, but rather a collection of posts that I originally shared on the project’s Facebook page. 20180108 New Power … Read More
I began troubleshooting my EDP WASP clone (Jasper) keyboard, which I built a few years ago. However, the keyboard was not tracking accurately which I thought to be a feature. After servicing EMS and Serge capacitive keyboards, I observed that capacitive keyboards can track both accurately and quickly. This led me to believe that I … Read More
In many of his synthesizers (Sähkökvartetti, Andromatic, DICO, and DIMI-A), Kurenniemi used a bank of fixed band-pass filters as the main audio processing phase in the signal path. All banks on different instruments are slightly different and tuned differently. Kurenniemi liked to tune filters using high-Q settings, typically between 3 and 20. I am not … Read More
Info hub for DIMI-A workshop at Aalto University in December 2024. To be updated through the workshop week. Where: Lecture notes: Band pass filter assignment results: Youtube channel suggestions:
Here is a complete list of DIR units built so far. DIR-1 DIR-2 DIR-3 DIR-4 DIR-5 DIR-6 DIR-7 DIR-8
DIR DICO is currently in the beta testing phase. Hopefully, v5.1 is the final hardware design. Firmware is still under development, but legacy functionality is fully implemented. The audio signal chain is mostly cloned from the original DICO. Frequency dividing network and sequencer logic are implemented in software. The panel layout (white panel) is practically … Read More
I started using the label DIR (Dimi Is Reborn) for projects related to Erkki Kurenniemi’s instruments, beginning with the DIMI-A documentation project in 2015. This is an ongoing investigation, research, and reinterpretation of the hardware used in these instruments. The main objective of the project is to preserve the original Kurenniemi instruments. Typically, conserving a … Read More
Still trying to get my head around most optimal approach for interfacing with balanced and unbalanced equipment. To make things even more unclear, things can get more complex if equipment have floating signal ground. Meaning that chassis ground and signal ground is not connected. My understanding is that these should always be connected, but as … Read More