{"product_id":"doepfer-a-121-2-12db-multimode-filter","title":"Doepfer A-121-2 12dB Multimode Filter","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eModule A-121 is a voltage-controlled multi-mode filter with a cut-off slope of -12 dB \/ octave. It is the successor of the obsolete module A-121. The circuitry is different from the A-121 which used the obsolete CEM3320 filter circuit. The sound of the new module A-121-2 is identical to filter of the Dark Energy II\/III.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eThese are the most important features of the module:\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003evoltage-controlled multi-mode filter with a cut-off slope of -12 dB \/ octave (idential to the filter of the Dark Energy II\/III but has been expanded by the voltage controlled resonance feature)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003efour simultaneous outputs are available, each with different characteristics: low-pass (LP), high-pass (HP), band-pass (BP) and notch (N) \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003emanual control Frq. for the cut-off frequency of the filter (the cut-off frequency determines the point at which the respective filter effect appears)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003etwo inputs for frequency control by means of external control voltages (frequency modulation, e.g. by ADSR or LFO):\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003econtrol voltage input FCV1 without attenuator, about 1V\/octave sensitivity\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003econtrol voltage input FCV2 with attenuator FCV for the adjustment of the modulation depth of input FCV2\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003efrequency range about 10Hz ... 20kHz\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003eManual control Q for the resonance of the filter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003econtrol voltage input FCQ without attenuator for external voltage control of the resonance\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003eresonance up to self-oscillation, in which case the module will behave like a sine wave oscillator even without audio input signal\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li3\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s3\"\u003eaudio input Audio In with attenuator Lev. for the adjustment of the filter input level (beyond about pos. 5 clipping\/distortion occurs with typical A-100 audio levels)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":42997115650237,"sku":"1016125","price":210.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/4175\/9421\/files\/DoepferA-121-212dBMultimodeFilter.jpg?v=1742344339","url":"https:\/\/moogaudio.com\/products\/doepfer-a-121-2-12db-multimode-filter","provider":"Moog Audio","version":"1.0","type":"link"}