street priceOB-SX is the cheaper and lighter version of OB-X.
Just like its "big brother" it was based on a modular system and was produced with two, four or six voice cards. But the cards are not interchangeable/not compatible with OB-X.
Each voice card has:
Two VCOs built on specialized CEM3340 chips.
VCF LP based on CEM3320, has a cutoff slope of 12 dB per octave.
Two envelope generators. One for VCF, the second for VCA. It is built on CEM3310.
One discrete voltage controlled amplifier (VCA).
The synthesizer includes a modulatable low-frequency oscillator (LFO) producing a triangular and square wave.
Country of origin / production: USA
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| Usage area | |
|---|---|
| Synthesizer | |
| Usage Design/ Form Factor | |
| With Keys | |
| Archetype | |
| Hybrid, Digital+Analog | |
| Polyphony | |
| Voices | 6 |
| Tone Generator / Sound Synthesis | |
| Oscillator Type | VCO (Voltage Controlled Oscillator) |
| Oscillators per voice | 6 |
| Waveform/ Spectral form (main generator) | Square |
| Waveform/ Spectral form (main generator) | Saw |
| Programs/ Voices/ Timbres | |
| Patches | 56 |
| Filter | |
| Low-pass Filter (LPF) | |
| 12dB | |
| Resonance | |
| Envelope Generator (EG) | |
| Attack | |
| Decay | |
| Sustain | |
| Release | |
| Keys | |
| Type | Synth Action |
| Size | 4 |
| Number of Keys | 48 |
| Built-in controllers | |
| Pitch Bend Wheel | |
| Modulation Wheel | |
| Audio out | |
| Mono | |
| Analogue: 1/4" (6.35mm) | 1 |
| Power | |
| Voltage | 230V |
| Voltage | 115/117V |
| Voltage | 50-60Hz |
| Power Supply | Built-in, internal |
| Case/ body | |
| Metal&wood | |
| Color | |
| Black | |
| Production start | 1980 |
| Production end | 1983 |
| Production ended | |