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Doepfer A-155

Doepfer A-155

Analog and Trigger Sequencer for Modular System A-100

The following functions are available for the two analog rows (rotary knobs):

  • 8 Rotary potentiometers
  • Scale (stepless knob) on the lower row, 1V / 2V / 4V switch on the upper row
  • Glide (glide time knob = portamento, slew limiter)
  • Glide control (control input for switching glide function on/off)
  • S&H control (control input for controlling the internal S&H)
  • Pre glide/S&H out (analog output just off the S&H and glide unit, required when using the lower row with external audio signals)
  • Post glide/S&H out (analog output after S&H and glide unit)
  • On the lower row: External inputs for the 8 levels (switched jacks), here control signals or audio signals can be fed and the knobs of the lower row are working as attenuators

The four trigger rows (switches) have the following features:

  • 4 Trigger/Gate tracks with 2 rows of switches
  • Toggle switch with centre position, which can be either brought up, down or into the middle position (without function)
  • 3 Trigger rows (i.e. short pulse for each step set, pulse width corresponds to the pulse width of the clock signal)
  • 1 gate row (i.e. a signal is applied during the length of the step set)

Control inputs and buttons for:

  • Step (sets the tempo, synonymous with Clock, Trigger)
  • Reset (resets all rows to step 1)
  • Start (starts the sequence at the current position)
  • Stop (stops at current position)
  • Step and Reset are compatible with the MIDI interface A-190. In combination with the A-190, the A-155 may be synchronized with MIDI. The quantizing module A-156 can be used for precise quantization of the stepless analog outputs into exact semitone steps (measures of 1/12V). Without a MIDI connection, the rectangle output of an LFO can be used for tempo control.

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17 customer ratings:

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Tolle Spielwiese

Jörg6332, 11.06.2015
So ein Step-Sequenzer gehört einfach in jedes Setup. Zwar gibt es leider kein Skip - aber mit der external CV/Audio Inputs Pegelsteuerung der zweiten Sequenzerlinie wird das mehr als wett gemacht. Das ist eine ganz tolle Spielwiese für außergewöhnliche Experimente.
So ein Sequenzer erzeugt selbst natürlich keinen Sound - es wäre aber blöd, wenn darunter die Bewertung leiden würde. Deswegen auch dort volle Punktzahl - immerhin erzeugt man im Zusammenspiel mit dem Sequenzer völlig neue sounds mit seinen Modulen.
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Petit Step sequenceur presque tout nu...

JEFF G., 08.07.2011
Description :

Il s'agit donc d'un Step Séquenceur au format Eurorack.
C'est un huit pas, c'est a dire qu'il peut générer une séquence de huit événements.
Il possède quatre possibilités de déclenchement (trigger).
Il génère deux ligne de CV.
Il y a des sorties (CV) pre et post en fonction du Glide.
Il possède les fonctions de base, c'est a dire Start/stop/reset/clock.

Détails des principales fonctions :

Trigger/Gate :

Il possède trois sorties Trigger et une sortie Gate. La sortie Gate a une impulsion plus longue que le Trigger.
On active les Trigger/Gate via les deux lignes de huit switchs.
Trois positions par switch : On Trigger1 / Rien / On Trigger2.

Les lignes 1 et 2 sont ensembles et les lignes 3 et 4 sont ensembles.

Ce qui veut dire que si le "pas1" du Trigger 1 activé, le "pas1" du Trigger 2 ne peut pas être activé. Pareil pour les lignes Trigger 3 et 4.

CV :

Il y a deux lignes de huit potentiomètres. Les CV peuvent sortir pre ou post Glide.
La ligne de CV1 est prévu pour contrôler la hauteur de note et la ligne de CV2 pour contrôler, par exemple, la modulation d'un filtre.
De ce fait, la ligne CV1 possède un switch pour gérer la hauteur maximum des notes.
La ligne CV2 est quasiment identique...sauf qu'il n'y a pas le switch de hauteur de note et il y a un potentiomètre d'intensité de sortie CV.
Elle peut être aussi entièrement modulée par des sources externes comme une LFO, par exemple.

Avis et commentaires :

Un module qui nécessite d'autres modules.

Ce module peut fonctionner presque tout seul, il vous faudra au moins quelque chose pour générer une horloge (une LFO, une BaR , un module midi avec clock ou gate...)
Pour l'exploiter et en tirer un maximum, il va falloir lui rajouter un module "Quantizeur" qui va vous permettre de sortir des notes "justes".
Pour avoir des fonctions plus poussées, comme la lecture de la séquence aléatoire, ping pong etc, il faut lui rajouter son module de contrôle (qui, au passage, permet de mettre deux A-155 a la suite et ainsi faire un seize pas...)

Au final, on peut se retrouver avec le prix d'un Step Séquenceur externe, au alentour des 600/700 euros, mais directement intégré au modulaire.

Il est parfait pour créer une séquence de huit "pas" relativement complexe...mais une seule!

Personnellement , je l'utilise pour créer une ligne de bass avec une modulation du filtre (par exemple), pour déclencher mon Kick sur la ligne Gate4 et un OH (ou autre son en décalé) sur le Trigger 3.
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€285 £246.48
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item number 154958
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available since January 2004
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Offers include 20% British VAT and are valid as long as stocks last. Shipping costs to the U.K. are 10 EUR (approx. £7), free shipping on orders above 199 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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