Haible - VC Poly Resonator

The Haible VC Resonator is based on the wonderful Polymoog-inspired Resonator by Jürgen Haible and brings it to Eurorack.

"The Polymoog, an early polyphonic synthesizer, had a three-band "resonator" section that provided formant filtering in addition to dynamic filters. Such a resonator is a very useful feature for analog synthesizers,"  Jürgen Haible said in reference to the background of the development.
The VC Resonator features controls for frequency, gain and resonance (emphasis), and now also a VC control for each of the three bands. These now have extended frequency ranges to the extent that overlapping/crossing is possible. For example, the LOW and MED frequency bands of the Haible VC Resonator can be adjusted so that the center frequency of the LOW band is higher than that of the MED band. The original Haible Resonator module only had, sticking true to the Polymoog design, a switch for selecting one of the three alternatively operable basic modes. Now these can be used simultaneously (e.g. for crossfading) via three separate outputs. High-quality Burr-Brown opamps and VCAs have been installed in this skiff-friendly 18HP module.

Features:

• Further developed design based on the resonator by Jürgen Haible
• Additional CV control of the filter bands
• Frequency range of the filter bands now overlapping
• Three separate outputs for simultaneous use of the basic modes
• Mode switch adds OR substracts the medium band.
• high quality op-amps (Burr-Brown) and high-end VCAs
• Skiff-friendly 30mm deep