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A-140 Vintage Edition

  • Model :
    A-140V
  • Size :
    8 HP
  • Price :
    100 €
  • Technical details :

    Power consumption: 20mA at +12V and 20mA at -12V

    Depth: 50mm

A-140 Vintage Edition

Module A-140 is an envelope generator, and, since it puts out control voltages, counts as one of the modulation devices in a modular system.

 

  • As soon as the gate input receives sufficient voltage, the ADSR generates a variable voltage, changing in time, called an envelope. This varying voltage is output in normal (positive) and inverted form, and can be used, for example, for voltage controlled modulation of a VCO, VCF, or VCA, or for processing other modules' inputs and outputs. The shape of the envelope is governed by four parameters: Attack, Decay, Sustain and Release. The envelope is started (triggered) by a gate signal either from the INT.GATE voltage on the system bus, or, if a signal is put into it, from the gate input socket. The envelope can also be re-triggered, ie. start from scratch again, each time a trigger signal is sensed at the Retrig. input socket, when the gate is still open. Module A-140 includes a three-position toggle switch to select one of three time ranges. The envelope duration ranges from about 50us (microseconds) up to several minutes.

     

  • Module A-140 has available a three-position toggle switch to select one of three time ranges. The time ratios for the three ranges are about 1 : 20 : 1000. The absolute Attack times are about:

    • 20uS ... 100ms (switch position L)
    • 400uS ... 2s (switch position M)
    • 20ms ... 120s (switch position H)

    The Decay and Release times are about 3-4 times more. Because of the exponential slope and the gradual asymptotic approach to the zero level the exact specification of the decay and reales times is a bit difficult.

    The voltage ranges of the ADSR outputs are about 0 ... +8V for the two normal outputs and 0 ... -8V for the inverted output.

    In combination with the Comparator module A-167 a free-running "ADSR-LFO" can be realized.

    For more detailed information please look at the English user's manual: A140_man.pdf.

    Related modules are the 4-fold ADSR A-143-2, the voltage controlled ADSR A-141-2 and the voltage controlled Decay/Gate module A-142-1.

    Remark: Module A-140 will be renamed to A-140-1 to distinguish it better from other modules of the A-140 series (e.g. A-140-2).


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