{"product_id":"sonus-faber-gravis-i","title":"Gravis I","description":"\u003cdiv class=\"pa-d5\" style=\"color:#080808;line-height:1.6;font-size:15px\"\u003e\n\u003cp style=\"margin:0 0 6px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#8d1935;font-weight:600\"\u003eSonus faber · Gravis Subwoofers\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px;font-size:18px;line-height:1.45;font-weight:600\"\u003eThe most compact Gravis: a down-firing closed-box subwoofer sized for Lumina and small Sonetto systems.\u003c\/p\u003e\n\u003cp style=\"display:inline-block;margin:0 0 18px;padding:4px 10px;border:1px solid #d8d5ce;border-radius:2px;font-size:13px;color:#55524c\"\u003ePrice is for one subwoofer.\u003c\/p\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:#d8d5ce;border:1px solid #d8d5ce;margin:0 0 22px\"\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e8.3 in\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003edown-firing woofer\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e150 W\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003eRMS, Class AB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003e30 Hz\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003elow-frequency extension (−6 dB)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f7f6f2;padding:12px 14px\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:600;line-height:1.2\"\u003eManual\u003c\/div\u003e\n\u003cdiv style=\"font-size:12.5px;color:#55524c;line-height:1.35;margin-top:3px\"\u003ecrossover, phase and level controls\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin:0 0 12px\"\u003eGravis I uses an 8.3-inch long-throw paper-cone woofer, firing downward from a closed box, driven by a 150 W RMS (250 W peak) Class AB amplifier. A leather top embossed with the Sonus faber logo finishes the small, square cabinet. Controls include separate master and LFE levels, a 30 to 120 Hz crossover (24 dB\/octave), a phase switch and auto on\/off.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 20px\"\u003eSonus faber recommends Gravis I with the Lumina collection and the Sonetto I and II. It is the one to choose when floor space is tight and you want fuller bass from bookshelf speakers, not maximum home-theater output. You can connect it at line level, through an LFE input, or at speaker level through the Speakon input.\u003c\/p\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eKey technologies\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 20px;padding-left:18px\"\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eClosed box.\u003c\/strong\u003e A sealed, down-firing design for compact placement.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eClass AB amplifier.\u003c\/strong\u003e 150 W RMS with 250 W peaks.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eThree ways to connect.\u003c\/strong\u003e LFE, line and speaker-level (Speakon) inputs.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 5px\"\u003e\n\u003cstrong\u003eLeather top.\u003c\/strong\u003e Embossed with the Sonus faber logo.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:16px\"\u003eFinishes\u003c\/h3\u003e\n\u003cul style=\"list-style:none;margin:0 0 6px;padding:0\"\u003e\n\u003cli style=\"display:flex;align-items:center;gap:10px;margin:0 0 6px\"\u003e\n\u003cspan style=\"flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:#7a5134;border:1px solid #d8d5ce\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWalnut\u003c\/strong\u003e \u003cspan style=\"color:#55524c\"\u003ewood\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;align-items:center;gap:10px;margin:0 0 6px\"\u003e\n\u003cspan style=\"flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:#3b2a22;border:1px solid #d8d5ce\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWenge\u003c\/strong\u003e \u003cspan style=\"color:#55524c\"\u003ewood\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;align-items:center;gap:10px;margin:0 0 6px\"\u003e\n\u003cspan style=\"flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:#eeede9;border:1px solid #d8d5ce\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMatte White\u003c\/strong\u003e \u003cspan style=\"color:#55524c\"\u003elacquer\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display:flex;align-items:center;gap:10px;margin:0 0 6px\"\u003e\n\u003cspan style=\"flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:#111111;border:1px solid #d8d5ce\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePiano Black\u003c\/strong\u003e \u003cspan style=\"color:#55524c\"\u003elacquer\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"height:14px\"\u003e\u003c\/div\u003e\n\u003cdetails open style=\"border-top:1px solid #080808;margin:0 0 6px\"\u003e\u003csummary style=\"cursor:pointer;padding:12px 0;font-size:16px;font-weight:600\"\u003eSpecifications\u003c\/summary\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin:0 0 14px\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eClosed-box, down-firing active subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eWoofer\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e8.3 in (210 mm) long-throw, treated paper cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eFrequency response\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e30 Hz – crossover frequency (−6 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eAmplifier\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e150 W RMS (250 W peak), Class AB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eLFE (RCA), line (RCA), high level (Neutrik Speakon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eControls\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eMaster and LFE level, crossover 30 – 120 Hz (24 dB\/oct), phase 0\/180°, auto on\/off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e13.1 × 11.2 × 12.4 in (334 × 286 × 316 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003e30.9 lb (14 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px 7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top;width:40%;color:#55524c\"\u003eSold as\u003c\/td\u003e\n\u003ctd style=\"padding:7px 0;border-bottom:1px solid #d8d5ce;vertical-align:top\"\u003eSingle subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp style=\"margin:0 0 14px;font-size:13px\"\u003e\u003ca href=\"https:\/\/www.sonusfaber.com\/en\/products\/gravis-i\/tech-specs\" target=\"_blank\" rel=\"noopener\"\u003eSonus faber Gravis I technical specifications\u003c\/a\u003e\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border-top:1px solid #080808;border-bottom:1px solid #080808;margin:0 0 22px\"\u003e\u003csummary style=\"cursor:pointer;padding:12px 0;font-size:16px;font-weight:600\"\u003eWhere it sits in the range\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px\"\u003e\n\u003cp style=\"margin:0 0 8px\"\u003ePick the Gravis model by room size and by the speakers it supports.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravis I\u003c\/strong\u003e (this model)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/gravis-ii\"\u003eGravis II\u003c\/a\u003e: 10.2 in + passive radiator, 350 W, for Sonetto\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/gravis-iii\"\u003eGravis III\u003c\/a\u003e: 9.8 in sealed, 600 W, app control\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/gravis-v\"\u003eGravis V\u003c\/a\u003e: 12.6 in sealed, 850 W, for Homage\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/sonus-faber-gravis-vi\"\u003eGravis VI\u003c\/a\u003e: 2 × 12.6 in, 1,700 W, for Reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003cdiv style=\"padding:16px 18px;background:#f7f6f2;border-left:3px solid #8d1935\"\u003e\n\u003cp style=\"margin:0 0 4px;font-weight:600\"\u003ePlan your Gravis I system with Pearl Audio\u003c\/p\u003e\n\u003cp style=\"margin:0;font-size:14px\"\u003ePearl Audio is an authorized Sonus faber dealer. We can help with room placement, amplifier matching, delivery and setup, and arrange a listening appointment. Call \u003ca href=\"tel:+15032222599\"\u003e(503) 222-2599\u003c\/a\u003e or email \u003ca href=\"mailto:sales@pearlaudio.com?subject=Gravis%20I\"\u003esales@pearlaudio.com\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sonus Faber","offers":[{"title":"Black","offer_id":43204601741410,"sku":"SBWU51BFI","price":1100.0,"currency_code":"USD","in_stock":true},{"title":"Wood","offer_id":43204601774178,"sku":"SBWU51RFI","price":1100.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":43204601806946,"sku":"SBWU51WFI","price":1100.0,"currency_code":"USD","in_stock":true},{"title":"Wenge","offer_id":43204601839714,"sku":"SBWU51EFI","price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/sonus-faber-gravis-i-recovery-lead-2026_b844dd21-1cbe-4c5e-a5ec-94b40e8e8360.jpg?v=1786520202","url":"https:\/\/pearlaudio.com\/products\/sonus-faber-gravis-i","provider":"Pearl Audio","version":"1.0","type":"link"}