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Analogue Modular System A-100
“Oberheim SEM” 12dB/oct Voltage Controlled Filter
The A-106.5 is 12dB/oct multimode VCF based on the classic Oberheim SEM module.
It has lowpass, high pass, notch and band pass response, with a balance control between high and low pass outputs, meaning that an equal mix in the mid position will provide a notch filter response.
A separate output is available for the bandpass output. Like an original SEM, this filter does not self oscillate, but has a characteristic distortion when overdriven.