Friday, February 27, 2015

Doepfer A-106-5 12dB SEM Filter Tutorial Videos by Raul Pena

While I was gone, Raul Pena kept on making new A-100 video tutorials.
Here's the next series (now presented here as a playlist instead of weekly updating a blogpost), showing you all the ins and outs of the A-106-5 SEM Filter.
A-106-5 12dB
SEM Filter

Module A-106-5 is a 12dB multimode filter that is based on the filter circuit of the Oberheim SEM module.
The filter is equipped with a band pass output and a combined low/notch/high pass output.
For this output a control knob defines the relation between low and high pass signal. 
If both signals appear at the same level (i.e. middle position of the Mix knob) one obtains a notch filter. Otherwise the low or high pass signal predominates. 
The module does not feature self oscillation in contrast to most of the other filters of the A-100 system. 
The module generates a distorted audio signal if the level control is set to about 50% (i.e. center position) or more with A-100 standard signals like VCOs.

Inputs:
Audio In, CV1 In without attenuator, CV2 In with Polarizer
Outputs:
Bandpass Out, Low/Highpass Mix-Out
Controls:
Audio Attenuator, CV2 Polarizer, Frequency, Resonance, LP/HP Mix

Click HERE for more A-106-5 on PatchPierre.Net

Doepfer A-106-5 12dB SEM Filter Tutorial (Playlist)

"... Sound and Video by Raul Pena."

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