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- Order number: 120070
- Depth: 50
Vactrol based combination of resonant 12dB lowpass filter and/or VCA. Inspired by the Buchla 292.
A LopassGate (LPG) can be a low pass filter, a VCA or a combination of both. This means both the harmonic content and volume can be controlled simultaneously which resembles the behaviour of many instruments: the louder, the more harmonics.
The A-101-2's mode of operation is set with a switch: left position is low pass, right is VCA and the combo mode is in the center. Alternatively you can activate the modes with gate signals which is the reason for two gate inputs; this is very interesting in combination with clock dividers or trigger sequencers.
- Gate 1 high & gate 2 low = low pass mode
- Gate 1 low & gate 2 high = VCA mode
- both Gate 1 & 2 high = combo mode
The A-101-2 has an aggressive sound, compared to other LPGs and it's resonance goes up to self-oscillation which not many LPGs offer. The oscillation is rather dirty and far from being a sine wave .
Das A-101-2 auf Doepfers Webseite;http://www.doepfer.de/a1012.htm; Bedienungsanleitung (pdf);http://www.doepfer.de/a100_man/a1012_anl.pdf
WIth a long trajectory building synths, MIDI keyboards and designing bespoke devices for music pioneers Kraftwerk, Dieter Doepfer decided to design his own modular synthesizer in 1995 based on existing electrical and mechanical specifications of lab equipment he used during his years at university. The official presentation of the system at 1996 Frankfurt Musikmesse caught everyone by surprise and created lots of interest. After Doepfer published the specifications on his website, many instrument designers and engineers saw the potential of the new Eurorack format. Doepfer continues expanding their catalog of over 200 modules (and counting), operating from their modest offices in the outskirts of Munich.