Doepfer - A-101-2: Vactrol Low Pass Gate

Manufacturer Description: A-101-2 is a vactrol based combination of low pass filter (lp) and vca and was inspired by the buchla module 292. the term "low pass gate" was created by don buchla and stands for a module that can be switched between low pass and vca. the control (manually and via external cv) is responsible for frequency in the low pass mode and for loudness in the vca mode. additionally a combined mode lp+vca is available. in this mode the sound becomes more dull as the loudness decreases.in contrast to the buchla design the a-101-2 offers attenuators for both cv and audio input, a manual resonance control and two gate inputs to control the function of the module in addition to the manual toggle switch.in principle the a-101-2 is a 12 db low pass filter that can be switched to vca or a combination of low pass and vca. the controlling elements for frequency (lp mode) resp. amplitude (vca mode) are so-called vactrols. vactrols are known for their smooth sound behaviour.the fr