A SEQUENCER FROM BERLIN - THE MFB-601

video upload by Polykit Synth

"In this video I look into the history of MFB, a Berlin based manufacturer of musical instruments, and repairing a vintage jewel, the MFB-601 digital sequencer from 1983.

The MFB-601 is sequencing my Kosmo modular synthesizer. Two VCOs are going through a Steiner diode ladder VCF and a spring reverb tank. The MFB-601 is also triggering the MFB-501 drum machine to stay in sync.

0:00 - Intro
0:15 - History of MFB
1:06 - The MFB-601 Digital Sequencer
1:37 - Repair
2:26 - Programming of Sequences
3:40 - Demo MFB-501 & MFB-601
5:14 - Conclusion"

The Polykit X1 DIY Semi-Modular Analog Synthesizer

video upload by Polykit

Follow-up to Prototype of a PATCHABLE analog SYNTHESIZER

"The Polykit X1 - a DIY semi-modular, analog synthesizer. It is based on the voice card I’ve build over the last months. It brings out all parameters of the card and offers a lot of variations through patching.

I've been so happy with the outcome of the voice card for a polyphonic synth that I've build an interface for a single card. It holds jacks for control voltages and signals, pots for all parameters, switches for filter responses, utility circuits and a power supply. It is the first time I used SMD components for all major parts.

You can find all needed files to build one yourself on my GitHub site https://github.com/polykit/polykit-x-...

0:00 - Intro
0:57 - Design Process / SMD
1:46 - Specs of the Voice Card
2:16 - Specs of the Semi Modular Interface
3:00 - Patching Details
8:26 - Other Controls
8:57 - Conclusion

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