AM8140 Dual ADSR

Dual ADSR

Overview This module contains two traditional ADSR envelope generators that use transistors to switch between phases. This type of ADSR was widely available in the 1970's in analog modular and mono synths. Each enevlope outputs both a positive and negative control voltage, with the maximum output level being +7.5V. This modules replaces the popular AMSynths AM8705 Dual ADSR.

EuroRack Module: 16HP wide
User Manual: Download PDF

Detailed Description
The AM8140 contains two identical envelope generators (one RED and one BLUE) with slide potentiometers controlling Attack, Decay, Sustain and Release. The potentiometer knobs are ARP style in BLUE and RED. The timing of the envelope generators can be individually switched using a front panel slide switch to normal (x1) and slow (x0.1), thereby giving a range of timings from 1ms to 30 seconds. Each envelope generator can be gated on and off from:
The Doepfer power bus (connected to a MIDI CV module), this is common to both envelopes
Panel mounted momentary push buttons (RED and BLUE)
Gate 1 and 2 Input signals
Red and Blue LED indicators show when the respective gate signal is on for each ADSR.

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