The instrument
Yamaha launched eight analog, monophonic synthesizers of the CS series in 1977-1979: CS-5, CS-10, CS-15, CS-20M, CS-30, CS-30L, CS-30D and CS-40M. They follow on from the company's first synthesizers SY-1 and SY-2. The CS-10 is equipped with a keyboard of 37 keys for three octaves, 1 VCO, 1 LFO, 1 VCF, VCA, 2 ADSR envelopes and CV / Gate controls. It is a smaller version of the CS-15 with only one channel.
Details
The VCO has sawtooth and variable PW waveforms, the LFO has sine and sawtooth and switchable low-pass, band-pass or high-pass resonance filters. The latter can modulate the waveforms of the VCO, the VCF filter cutoff, the volume and the pitch. External audio material can also be passed through the filter. The EG-VCA (Envelope Generators) works with the ADSR envelopes, Attack Time, Decay Time, Sustain Level and Release Time. The VCF multimode filter can be operated as a high pass, band pass or low pass. It has cutoff and resonance controls. There are also CV/gate controls, portamento and brilliance.