MSK 009 Coiler VCF

Multimode filter and rectifier

The MSK 009 is a multimode voltage-controlled filter for Eurorack modular synthesizers, with a unique inductor-based integrator section. The integrators use magnetic fields around inductors rather than electric fields in capacitors to do most of the energy storage for computing the filter function. Since the inductors exhibit a fair bit of non-ideal behaviour, especially at low frequencies, the filter also uses capacitors to tweak the inductors into covering a wider range. Its built-in full-wave rectifier is also great for adding harmonics and distortion in patches from the other coast. When combined with low-pass, the rectifier allows the Coiler to serve as a basic envelope follower, for compression and external-signal patches.

Simultaneous low-pass, band-pass, and high-pass outputs, and a full-wave rectifier input, provide a wide range of sonic possibilities. Non-venomous.

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