A-100 Modifiers

Module Description Controls Inputs/Outputs
Dual trigger modifier.

2 separte trigger modifiers. Each with 2 connected inputs for logical signals (gate, clock, trigger) and 2 outputs.

The first output provides the inverted signal: "low" is changed into "high" and vice versa.

The second output generates short trigger pulses for each rising and falling edge of the input signals.

2 LEDīs for display of output signals.

Per modifier:
  • LED for inverse output
  • LED for +/- pulse output
  • Per modifier:
  • 2x In
  • Inverse out
  • +/- out
  • Dual slew limiter.

    Module A-170 contains two separate slew limiters, also known as portamento controllers or integrators.

    The first SL has just one joint control, which sets both rise and fall times (c. 0 ...10 sec). The second SL has separate controls for riseand fall times, and can therefore be used as a simple AR envelope generator.

    Over and above this, you can set the overall range for these parameters, with a three-position switch, as on the full ADSRs. Both slew limiters have two LEDs each, to show the state of the rising and falling voltages.

    Unit 1:
  • Time
  • 2x control LED
  • Unit 2:

  • Rise time
  • Fall time
  • Time range
  • 2x control LED
  • Unit 1:
  • In
  • Out
  • Unit 2:

    • In
    • Out
    VC slew limiter/portament controller.

    Whenever there is an abrupt transition in the voltage present at the input, the Slew Limiter works as an integrator, slowing down the transitions in the output signal so that abrupt transitions are sloped.

    The steepness of the slope is governed by the rate control. As well as manual setting of this slope, the A-171 also gives you the possibility of voltage control of the slope's gradient by patching in an appropriate voltage to two CV inputs, one of which has an attenuator for level adjustment.

    Two LEDs serve as status indicators to show the relative amounts of positive and negative signals at the output.
    • Slew time
    • CV 2
    • 2x control LED
  • CV 1
  • CV 2
  • 2x signal in
  • Out

  • Dual voltage inverter..

    Module A-175 is exactly what it says it is: two identical inverters.

    An input of +5 V will be output as -5V, an input of -2 V will be output as +2 V, and so on.

    Two LEDs give a visual indication of the positive or negative output signal.

    Per inverter
    • +/- LEDīs
    Per inverter:
  • 2x in
  • Inverse out
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