This manual provides instructions for the Yamaha CS-20M and CS-40M programmable memory synthesizers. It details the features of these professional keyboards, including their built-in programmer, back-up batteries, and cassette interface for storing and loading programs. The document explains the synthesizer's architecture, covering voltage-controlled oscillators (VCO), filters (VCF), amplifiers (VCA), and envelope generators (EG).
| CS-20M Voice Storage | 8 original voices |
|---|---|
| CS-20M Parameters | 32 parameters |
| CS-40M Voice Storage | 20 voices |
| CS-40M Parameters | 50 parameters |
The back-up batteries for the RAM have a life of approximately 2 years.
Yes, a built-in cassette interface enables storage of programs onto cassette tape.