ETI 4600 panel: left

VCO 1 | Mix 1 2 & 3

VCO 2 |

VCO 3 |

VCO 4 |

Noise | Modulator |

Keyboard controller |

 

The 4600 use Hz/V not 8ve/V: it has linear ocillators not exponential. This is more stable and simplifies VCOs and VCFs, but complicates the key control and modulation arrangements a little.

Done