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Oberheim SEM Pro

Synthesizer Expander Module

DescriptionSoundsVideoTech specsCompatibleAlternativeFAQComments

Oberheim SEM Pro
1 200.00 street price

The older model in the line of modern SEM modules, combines all the additional options.

For interaction with modular systems there are 21 CV inputs/outputs (3.5 mm jacks).

There’s a MIDI-CV converter so that it could work with MIDI equipment.

It is based on the almost unchanged SEM scheme of the model produced in 1974. The changes affected the replacement of vintage microcircuits, which are not produced now, with modern analogs. Such a substitution didn’t deteriorate the sound in any way. The analog part comprises:

Two VCOs producing sawtooth and rectangular waves. There is a possibility of PW and FM, oscillators detune, as well as synchronization mode.

Modulatable Low Frequency Oscillator - produces a triangular waveform that can be sent to modulate VCO, VCF or VCA.

Voltage controlled filter (VCF), state variable (LP, HP, BP, notch filter) with a slope of 12 dB per octave.

Two envelope generators with independent adjustment of attack, release and sustain time.

Country of origin / production: USA

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More info
 
Usage area
Modular System 
Sound Module/ Tone Generator 
Usage Design/ Form Factor
With Separate Keys Module 
Archetype
Analogue (A) 
Polyphony
Monophonic 
Tone Generator / Sound Synthesis
Oscillator Type VCO (Voltage Controlled Oscillator)
Oscillators per voice2
Waveform/ Spectral form (main generator) Pulse Width Modulation (PWM)
Waveform/ Spectral form (main generator) Saw
Filter
High-pass Filter (HPF) 
Low-pass Filter (LPF) 
Band-pass Filter (BPF) 
Band-reject Filter (BRF/ BEF) 
Envelope Generator (EG)
Attack 
Decay 
Sustain 
MIDI
General MIDI (GM) 
MIDI in/ out
IN 
THRU 
Audio out
Mono 
Analogue: 1/4" (6.35mm)1
Audio in
Analog 1/4"1
Power
Power Supply External
Weight3.5 kg
Case/ body
Metal 
Color
White 
Production start2009

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