{"product_id":"bubblesound-sem20st-stereo-sem-style-filter","title":"Bubblesound SEM20st - Stereo SEM-style Filter","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eThe Bubblesound SeM20st is a stereo analog Eurorack filter module derived from the original SeM20 dual filter, redesigned for stereo signal processing with enhanced control options and a compact modular footprint. \u003c\/span\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eIt delivers the same smooth, warm, and Oberheim-inspired sonic character as the original, while expanding its capabilities for modern stereo patching and spatial sound design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eThe module features intelligent normalization between channels: the left audio input is normalled to the right input, allowing seamless mono-to-stereo operation. Similarly, CV inputs for cutoff and resonance are normalled from left to right, enabling unified or linked stereo modulation with minimal patching.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eTo enhance stereo shaping, the left channel includes a cutoff offset control, allowing subtle or extreme detuning between channels to widen the stereo image. The right channel includes an attenuverter on the cutoff CV input, enabling both positive and inverted modulation. This makes complex stereo behaviors possible, including ping-pong filter motion when driven by a single modulation source.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eEach channel provides multiple simultaneous filter outputs, including low-pass, high-pass, band-pass, and notch responses, offering flexible routing and multi-band stereo processing. The SeM20st is designed for rich stereo movement, classic analog tone shaping, and deep modulation control.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eFeatures\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003e • Stereo analog dual filter based on the original SeM20 design\u003cbr\u003e • Classic warm, Oberheim-style analog filter character\u003cbr\u003e • Left input normalled to right for mono-to-stereo operation\u003cbr\u003e • Normalled CV routing for cutoff and resonance across channels\u003cbr\u003e • Left channel cutoff offset control for stereo widening and detuning\u003cbr\u003e • Right channel cutoff CV attenuverter for inverted or complex modulation\u003cbr\u003e • CV control of resonance\u003cbr\u003e • Multiple simultaneous filter outputs per channel (LP, HP, BP, Notch)\u003cbr\u003e • Capable of stereo ping-pong filtering effects with inverted modulation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eSpecifications\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003e • Product: Bubblesound SeM20st\u003cbr\u003e • Type: Stereo analog multimode filter\u003cbr\u003e • Channels: 2 (stereo)\u003cbr\u003e • Filter Types: Low-pass, high-pass, band-pass, notch (per channel)\u003cbr\u003e • CV Control: Cutoff and resonance with normalled routing and attenuverting\u003cbr\u003e • Width: 10HP\u003cbr\u003e • Depth: 35 mm\u003cbr\u003e • Power Consumption: +45 mA \/ -35 mA \/ 0 mA @ +5V\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eIncluded\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003e • Bubblesound SeM20st stereo filter module\u003c\/span\u003e\u003c\/p\u003e","brand":"Bubblesound Instruments","offers":[{"title":"Default Title","offer_id":46697188524221,"sku":"1061655","price":423.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/4175\/9421\/files\/BubblesoundSEM20st.jpg?v=1778184891","url":"https:\/\/fr.moogaudio.com\/products\/bubblesound-sem20st-stereo-sem-style-filter","provider":"Moog Audio","version":"1.0","type":"link"}