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Doepfer A-143-2

Doepfer A-143-2
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  • Filter - Envelope
  • Pitch - Envelope

Quad ADSRThe module contains 4 independent ADSR envelope generators. Each sub-module has the controls Attack, Decay, Sustain and Release. With the 3-stage range switch, the desired time range can be selected (low-high-medium). The adjustable envelope times range from several minutes to under a hundred microseconds.

In addition, each submodule is equipped with 3 digital outputs (high / low): End of Attack (EOA), End of Decay (EOD), and End of Release (EOR). When the respective criterion (for example, the end of the decay phase) is reached, the digital output in question switches to "high". These outputs can, for example, be used for cascading several ADSRs. As soon as the corresponding criterion arrives (for example, the end of the decay phase), another ADSR can be triggered with the corresponding output. Also automatically running envelope (pseudo-LFOs) and "quadrature envelope" with cyclically running modulations of several feedback ADSRs are possible. For example, To obtain a pseudo-LFO, only the output EOD or the EOR must be connected to the gate input of the corresponding ADSR.

In addition to the gate input required for all envelope generators, each of the A-143-2 submodules has a retrigger input. A retrigger pulse changes the envelope direction upwards when the decay phase is already reached when the retrigger arrives. If the module is still in the attack phase, the retrigger pulse has no function. Please note that this is a different behavior than the retrigger inputs of modules A-140 or A-141. The gate inputs are normalized, i. E. The gate input of the respective ADSR is placed on the switching socket of the following ADSR. Other normalizations can also be made upon request (e.g., EOD or EOR to the next gate input).

  • 4 Independent ADSR envelope generators
  • Each controls for Attack, Decay, Sustain, Release
  • Each 3-position switch range
  • Each 3 digital outputs: "End of Attack (EOA)", "End of Decay (EOD)" and "End of Release (EOR)"
  • Each gate input and retrigger input
  • Maximum envelope voltage (reversal point Attack / Decay) about 8V
  • Power requirements: 70 mA (12 V) / -50 mA (-12V)
  • Width: 26 TE / 131.8 mm
  • Depth: 50 mm (measured from the rear of the front plate)

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18 customer ratings:

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Un super module versatile, à prix abordable

13.12.2016
J'ai installé le A-143-2 dans mon système afin de l'utiliser pour créer des enveloppes complexes. Il peut à la fois servir à générer 4 enveloppes indépendantes basiques. Mais là ou il trouve tout son intérêt est de pouvoir faire inter agir les enveloppes entre elles graces aux différents trigs présents en fin d'attaque, decay et release. Cela permet de créer des enveloppes complexes assez rapidement et simplement.

En patchant le A-143-2 correctement on peut aussi créer des enveloppes autonome ne nécessitant aucun déclenchement extérieur. On passe vite des heures à s'amuser avec.

Le déclenchement des enveloppes via une clock midi rend le module encore plus pratique et performant.

Les plus: le prix, la versatilité du module, de bonnes possibilités de modulations.

Les moins: Occupe pas mal d'espace dans un petit système, profondeur importante qui peut éventuellement le rendre difficile à caser dans des boitiers avec alimentation fixe intégrée.Mais ces pints ne sont en soit pas de gros défauts.
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Doepfer A-143-2

Timsolipsis, 15.05.2013
nice envelopes, easy to use and loads of options for using it,.. disappointed that it doesn't run of the internal gate in the same way the A140 does. But, it is easy to connect from the front so no real issue.. a good envelope and i would buy again.
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item number 189112
sales unit 1 piece
available since January 2006
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