The Voltage Modular Synthesizer Expander Module is an emulation of the classic Oberheim® Synthesizer Expander Module, aka the "SEM." Originally released in 1974, the keyboardless, mono SEM module was intended as a companion to the Oberheim DS-2, one of the earliest digital sequencers. Though it was a simple, barebones monosynth, the SEM sounded fantastic, and had a tone quality very different than the common fuzzy, fat Moog sound, thanks to its 12 dB/oct state-variable filter. With lowpass, bandpass, highpass and notch modes, this flexible filter was the star of the show. We've precisely recreated it here with a detailed emulation programmed by award-winning synth designer, Mark Barton (MRB). The design is similar to the "patch panel" reissue SEM's released in the 2000's; these were basically identical to the 70s versions but added an extensive patch panel for modular synth flexibility. Because this a polyphonic module, the majority of the patch panel jacks are poly jacks (mono jacks are used where appropriate).
Disclaimer: Oberheim® and SEM are trademarks of Tom Oberheim. There is no association, affiliation or endorsement of Cherry Audio or its products by Tom Oberheim.
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