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DIY MFOS Dual AR KB

We always recommend visiting the MFOS website before building where the latest 'offical' information and news can be found. Here on the Soundtronics website, you will find selected information from the MFOS site plus additional information and resources to aid the building and maintaining of your MFOS synth. This is not going to happen over-night but during the course of 2014, it will start to take shape as we document our experiences in the construction of these modules. We would also like to include any experiences, hints and tips from customers as well so feel free to contact us or simply post a comment using the form at the foot of this page.

Introduction to the MFOS Dual AR

This dual AR generator is very cool and each EG features triggered, gated and repeat mode operation. When repeat is on (while in triggered mode) the EG continually goes through the attack and release cycles. In triggered mode the front edge of the gate (or a trigger signal) is used to trigger the circuit into operation. The attack cycle begins and completes and then the release cycle starts, the circuit can be re-triggered as soon as the release cycle begins. In gated mode when a gate is applied the attack cycle begins. If the gate is removed before the attack cycle completes (output attains maximum voltage of 10V) the release cycle begins. In gated mode, with repeat on, the EG repeats when the gate is low (when short times are used). In gated mode, with repeat on and the gate is held high the EG will go to and remain at the maximum output voltage (10V) until the gate is released at which time the EG will begin to repeat the AR cycles (when short times are used). Primarily repeat mode is designed to be used in triggered mode.

Features

  • Two separate Attack Release Envelope Generators on one PC board.
  • Each EG has its own repeat function.
  • Gated mode provides classic AR response.
  • Triggered mode provides AD response.
  • Retriggerable as soon as the attack cycle completes.
  • Attack and release times from 1 mS to 20 seconds.

Documentation & Downloads

Under Construction