Studio Electronics VCF SEM Oberheim Filter Modul

The Studio Electronics Boomstar Modular SEM Filter is a voltage controlled state variable filter providing simultaneous high pass, low pass, and band pass outputs, with a 12 dB/oct slope. The SEM is known as a 'Voltage Controlled State Variable Filter' because it provides simultaneous high pass, low pass, and band pass outputs, all with a 12 dB/oct slope. This version is a combination of the original SEM filter and the newer design from the OBX, along with improvements by Studio Electronics. It has a modest current draw, which it pulls evenly from the plus and minus rails. Three attenuverter and four attenuation pots control the FREQUENCY, RESONANCE, FREQ CV 1, RESO CV, LP HP, INPUT and OUTPUT, delivering smooth, detailed, and complex expression.

The main features of the Studio Electronics Boomstar Modular SEM Filter include:

• Controls and Patch Points:
  • FREQUENCY – Adjusts the frequency, or cut-off of the filter
  • RESONANCE – Adjusts the resonance of the filter
  • FULL HALF TRACK – Switch between full and half keyboard/voltage tracking
  • FREQ CV 1 – Frequency control voltage 1 input attenuverter
  • RESO CV – Resonance control voltage input attenuverter
  • LP HP – Low Pass / High Pass attenuverter
  • INPUT – Adjusts the audio input
  • OUTPUT – Adjusts the audio output
  • 1 V/O – One volt per octave control voltage input
  • FREQ CV 1 – Frequency control voltage 1 input
  • BP OUT – Band Pass Output. No cable patched, BP passes through the mains
  • RESO CV – Resonance control voltage input
  • INPUT – Audio input
  • BP LP-HP – Switch between Band Pass and Low Pass - High Pass modes
  • OUTPUT – Audio output
• Dimensions:
  • Size - 12hp
  • Depth - 39.7mm with ribbon cable attached
  • Power Usage - 23mA, 23mA (+12 / -12)