street price4 Voice is a semi-modular analog polyphonic synthesizer, assembled and based on the four SEM modules. Thus, the synthesizer incorporated eight voltage-controlled oscillators (VCO), two per voice, four controlled filters, four VCA and ADS envelope generator.
Each module is configured individually, which can create some inconvenience (it is mildly impossible to quickly change the settings of four modules at the same time having only two hands), but it actually allows creating very complex sounds and chords with unusual sonic flow.
The synthesizer included a dual eight-step sequencer and a mixer module, allowing to set the volume and pan position for each voice.
In 1976 the PSP module was added to the synthesizer. It simplified the control significantly, and allowed saving the settings of the synthesizer in 16 presets.
4 Voice was used in the compositions of 808 State, Chick Corea, Styx, Human League, Pink Floyd, Stevie Wonder.
Country of origin / production: USA
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| Usage area | |
|---|---|
| Synthesizer | |
| Usage Design/ Form Factor | |
| With Keys | |
| Archetype | |
| Analogue (A) | |
| Polyphony | |
| Analog Voices | 4 |
| Tone Generator / Sound Synthesis | |
| Oscillator Type | VCO (Voltage Controlled Oscillator) |
| Oscillators per voice | 8 |
| 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 | |
| Sequencer | |
| Parts count | 2 |
| Step Sequencer | |
| Max Step Count | 8 |
| Arpegiator/ Portamento | |
| Portamento | |
| Keys | |
| Type | Synth Action |
| Size | 4 |
| Number of Keys | 49 |
| Audio out | |
| Stereo | |
| Analogue: 1/4" (6.35mm) | 2 |
| Analogue: 1/4" (6.35mm) headphones preamplified | 2 |
| Power | |
| Voltage | 110V |
| Voltage | 60Hz |
| Power Supply | Built-in, internal |
| Case/ body | |
| Metal&wood | |
| Color | |
| Black | |
| Production start | 1975 |
| Production end | 1979 |
| Production ended | |
Keeping track of the success of his first synthesizer and willing to create a new product, Tom Oberheim simply combined two SEM modules with a keyboard and a basic sequencer putting them into one housing. This made it possible to get a duophonic...
Combined into one housing, eight SEM modules feature sixteen voltage-controlled oscillators (eight voices per each of the two VCOs), eight controlled filters, eight controlled amplifiers with ADS generators that can be configured individually. All...
