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The new SEM has the same single-voice analog circuit design as the original - 100% analog!
SEM with patch panel connections to internal inputs and outputs.
Originally released in 1974, the SEM is one of the classic discrete analog synths, with a huge, three-dimensional "fat" tone that must be heard to be believed. Tom's reissue cuts no corners- the circuitry is almost identical to original units. The only component changes were made due to unavailable parts, but the great tone has not been affected. No digital voice circuits, or thin-sounding analog "voice chips" here- only genuine hi-fi fat analog goodness.
This version includes a panel with 33 direct-access patch points on 1/8" jacks, transforming the SEM into a powerful "mini-modular" synthesizer. Not only does this allow tremendous voicing flexibility when used standalone, it allows easy interfacing with modular synthesizers or additonal SEM modules for limitless potential.
Single-Voice Monophonic Analog Synthesizer
Two oscillators, each with sawtooth and variable-pulse wave, pulse width and frequency modulation amount, ext envelope and LFO modulation select switches Oscillator sync
12db/oct multimode filter with continuously variable lowpass, bandpass, and highpass modes, ext envelope and LFO modulation select switches.
Filter input mixer with continuously variable saw to pulse wave mix for each oscillator and external input amount for processing external sources.
Two attack/decay/sustain envelope generators
Sine wave low frequency oscillator with speed control
Tom Oberheim and the new SEM from stretta on Vimeo.