Yamaha CS-70m Synopsis

Single VCO, microprocessor controlled (vs. CV/Gate) polysynth with elements of several CS series synths

Voice architecture is subtractive (i.e. VCO->VCF->VCA)

eBay Description

Key Features

1. Aftertouch: LFO destination
2. Architecture Class: subtractive
3. Audio IO: 3 outputs (channel 1, 2, balanced)
4. Audio Source: VCO waveforms are saw or pulse. Noise is also provided
5. Communication Interface: None
6. Effects: chorus (tremelo)
7. EG: VCF and VCA EGs are ADSR (i.e. 1 level, 3 rates). VCF EG also has polarity. LFO EG is AD (i.e. 2 rates)
8. Expansion: None
9. Filter: resonant low, high or band pass
10. Form Factor: 61 keys
11. Key Scaling: None
12. LFO: LFO waveforms are rmo, auto-bend, random, down saw or sine. Destinations are PWM, VCO, VCF and VCA
13. Memory:
• Multi Memory: N/A
• Patch Memory: 30 user (battery backup via 3x AA), 2 external (via magnetic strip)
• PCM Memory: N/A
• Sample Memory: N/A
• Sequencer Memory: 128x4 notes
14. Multitimbral: None
15. Pedal Inputs: mod, brilliance, volume, sustain, portamento
16. Performance Control: pitch and mod wheels, brilliance, sustain, portamento
17. Polyphony: 6
18. Power: AC
19. Released: 1981
20. Sequencer: 4 track, step time, with trigger pedal input
21. Signal Class: analog
22. Velocity: No

Further Information

• Subtractive synthesis
• http://wikipedia.org/wiki/Subtractive_synthesis
• Analog synthesizer
• http://wikipedia.org/wiki/Analog_synthesizer
• CS80:
• http://www.soundonsound.com/sos/1995_articles/jul95/yamahacs80.html
• Parts:
• http://syntaur.com/yamaha_cs.html

References

1. Owners manuals:
• http://www.yamaha.co.jp/manual/english/index.php
2. MSRP:
• Vintage Synthesizers by Mark Vail

see Yamaha Gallery