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Doepfer A-155 Analog/Trigger Sequencer

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[:pl]Analog and Trigger Sequencer, 2 rows of 8 steps with knobs and 2 rows of 8 steps switches[:en]

Analog and Trigger Sequencer, 2 rows of 8 steps with knobs and 2 rows of 8 steps switches

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Description

[:pl]Analog and Trigger Sequencer, 2 rows of 8 steps with knobs and 2 rows of 8 steps switches
Features of the analog rows (knobs):
- 8 potentiometers (knobs)
- lower row: Scale (knob), upper row: 1V/2V/4V
(octave range switch for exact VCO control)
- Glide time (knob), same as portamento or slew limiter
- Glide Control (control input for switching glide on/off)
- S/H Control (control input for internal S and H, works like A-148)
-
Pre Glide/S and H-Out (analog output before S/H and glide unit, especially required when external audio signals are used as inputs of the lower row)
- Post Glide/S and H-Out (analog output after S/H and glide unit)
- lower row: external inputs for the 8 steps (switched jack sockets), control signals or audio signals may be used as inputs (allowed voltage range -5V...+12V), the knobs of the lower row are working in this case as attenuators
Features of the trigger rows (switches):
- 4 Trigger/Gate tracks with 2 rows of switches
- toggle switches of 1-0-1 type (with middle position), which can be used to send a trigger/gate to the track above or below or to send no trigger/gate (middle position)
- 3 trigger rows (i.e. short pulse for each step set, pulse width corresponds to the pulse width of the clock/step input signal)
- 1 gate row (i.e. a high signal is applied during the length of the step set)
Control inputs and buttons:
- Step (defines the tempo of the sequence, same as clock or trigger input)
- Reset (resets all rows to step 1)
- Start (starts the sequence at the momentary position)
- Stop (stops the sequence at the momentary position)
Step and Reset are compatible to the MIDI interface A-190, i.e. in combination with the A-190 the A-155 may be synchronized via MIDI.
The quantizing module A-156 can be used to quantize the infinite analog voltages coming from A-155 into discrete semitone steps (multiples of 1/12V).
Without MIDI interface e.g. a LFO rectangle output can be used to define the tempo of the sequence.
The sequencer controller A-154 adds a lot of new functions to the A-155 (e.g. voltage controlled addressing, forward/backward/pendulum/random mode, voltage control of first and last step, voltage controlled clock and gate length, step skipping, combination of several A-155 in parallel/serial mode and many more).

         technical details
Width: 50HP
Connections:
3x Trigger outputs
1x Gate output
2x Pre outputs
2x Post outputs
2x S&H Ctrl.
2x Glide Ctrl.
8x External CV/Audio inputs
Start input
Stop input
Clock input
Reset input[:en]

Analog and Trigger Sequencer, 2 rows of 8 steps with knobs and 2 rows of 8 steps switches
                           Features of the analog rows (knobs):
- 8 potentiometers (knobs) 
- lower row: Scale (knob), upper row: 1V/2V/4V 
(octave range switch for exact VCO control) 
- Glide time (knob), same as portamento or slew limiter 
- Glide Control (control input for switching glide on/off) 
- S/H Control (control input for internal S and H, works like A-148)  />- Pre Glide/S and H-Out (analog output before S/H and glide unit, especially required when external audio signals are used as inputs of the lower row) 
- Post Glide/S and H-Out (analog output after S/H and glide unit) 
- lower row: external inputs for the 8 steps (switched jack sockets), control signals or audio signals may be used as inputs (allowed voltage range -5V...+12V), the knobs of the lower row are working in this case as attenuators
                         Features of the trigger rows (switches):
- 4 Trigger/Gate tracks with 2 rows of switches 
- toggle switches of 1-0-1 type (with middle position), which can be used to send a trigger/gate to the track above or below or to send no trigger/gate (middle position) 
- 3 trigger rows (i.e. short pulse for each step set, pulse width corresponds to the pulse width of the clock/step input signal) 
- 1 gate row (i.e. a high signal is applied during the length of the step set)
                           Control inputs and buttons:
- Step (defines the tempo of the sequence, same as clock or trigger input)
- Reset (resets all rows to step 1) 
- Start (starts the sequence at the momentary position) 
- Stop (stops the sequence at the momentary position)
Step and Reset are compatible to the MIDI interface A-190, i.e. in combination with the A-190 the A-155 may be synchronized via MIDI. 
The quantizing module A-156 can be used to quantize the infinite analog voltages coming from A-155 into discrete semitone steps (multiples of 1/12V). 
Without MIDI interface e.g. a LFO rectangle output can be used to define the tempo of the sequence. 
The sequencer controller A-154 adds a lot of new functions to the A-155 (e.g. voltage controlled addressing, forward/backward/pendulum/random mode, voltage control of first and last step, voltage controlled clock and gate length, step skipping, combination of several A-155 in parallel/serial mode and many more).


         technical details
Width: 50HP
             Connections: 
3x Trigger outputs 
1x Gate output 
2x Pre outputs 
2x Post outputs 
2x S&H Ctrl. 
2x Glide Ctrl. 
8x External CV/Audio inputs 
Start input 
Stop input 
Clock input 
Reset input

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