Doepfer A-147-2 Voltage Controlled Delayed Low Frequency Oscillator Vintage Edition
The Doepfer A-147-2 Voltage Controlled Delayed Low Frequency Oscillator Vintage Edition is the updated version of the A-147 module. With added ins, outs and functions, and also a separate VCA, this module truly represents the next generation of multifunctional Doepfer modules!
The Doepfer A-147-2 Voltage Controlled Delayed Low Frequency Oscillator Vintage Edition is the updated version of the A-147 module. With added ins, outs and functions, and also a separate VCA, this module truly represents the next generation of multifunctional Doepfer modules!
Main functions:
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VCLFO: voltage controlled low frequency oscillator
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VCA: voltage controlled amplifier, switchable to voltage controlled polarizer
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VC delay unit: voltage controlled linear attack envelope (only one parameter: attack) for delayed LFO operation in combination with the VCA (e.g. delayed vibrato/tremolo)
Specifications:
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Output level Triangle, Sine and Rectangle: about -4...+4V (symmetrical)
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Output level sawtooth: about 0...+8V (positive only)
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Frequency range without external CV: about 0,005Hz (about 3 minutes) ... 200Hz
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Frequency range in ultra low mode or external CV: about 1 hour period ... about 1kHz
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Trigger level for LFO Reset/Delay Reset: about min. 6 Vpp (AC coupled, i.e. the voltage difference is essential, 0V/+6V works as well as -3/+3V), if you want to use e.g. the gate output of one of the Midi interfaces A-190-x to control the LFO reset or delay reset input the gate level of the interface in question has to be set to high gate level.
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VCA CV/amplification: 0....+5V for amplification 0...+1 (in VCA mode), 0...+5V for amplification -0,5...+0,5 (in polarizer mode)
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Delay range: about 5ms ... about 2 minutes