{"product_id":"opera-grand-callas-loudspeakers","title":"Opera Grand Callas Loudspeakers","description":"\u003cp\u003eThe Grand Callas is Opera’s most refined three-way loudspeaker system to date, blending engineering precision, musicality, and architectural beauty into one adaptable design. With a nod to the revered Tebaldi and previous Grand Callas models, this fully re-engineered speaker combines serious performance with real-world flexibility. Powerful yet elegant, the Grand Callas delivers a richly textured soundstage with pinpoint clarity, whether you're near-field listening or filling a large space with music.\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue three-way design\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith dedicated rear dipole radiation system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo 8\" long-throw woofers\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith aluminum cones and SD1 flux stabilization\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7\" annealed polypropylene midrange\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith SEAS Excel motor system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\" Scanspeak 9700 tweeter\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith dual decompression chamber and no ferrofluid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear-firing tweeters\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewired as a natural dipole to enhance ambience and space\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour possible bass tuning configurations\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia reflex duct blockers and switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate internal chamber\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the midrange with precision acoustic treatment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavyweight cabinet\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith curved MDF and multilayer plywood panels up to 50mm thick\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandmade in Italy\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith luxurious wood and leather finishes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"seo-h2\"\u003eRear Dipole for Spatial Precision\u003c\/h2\u003e\n\u003cp\u003eOpera’s natural dipole system uses two rear-mounted tweeters wired in series and out of phase. This setup energizes the room with high-frequency ambience while avoiding destructive interference in the main listening axis. The result is a more immersive and natural top end that maintains transient accuracy without sounding etched or aggressive.\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\"\u003eDrivers That Do the Heavy Lifting\u003c\/h2\u003e\n\u003cp\u003eScanspeak-built woofers with aluminum cones are optimized for accuracy and speed, capable of hitting 115 dB at 200 Hz without strain. The annealed polypropylene midrange features a long linear excursion and Excel-based magnet system for ultra-low distortion. At the top, the Scanspeak 9700 tweeter continues its reign as one of the finest dome designs ever made: air, sparkle, and control in equal measure.\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\"\u003eCabinet Engineering That Disappears\u003c\/h2\u003e\n\u003cp\u003eDespite their size, Grand Callas enclosures minimize coloration thanks to multi-density construction, thick internal bracing, and detailed damping. The midrange chamber is fully lined with pyramid-profile open-cell foam, virtually eliminating reflections and modal noise. All front-facing driver mounts are precision-milled to reduce air turbulence at the cone boundary.\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\"\u003eSmart Crossover Architecture\u003c\/h2\u003e\n\u003cp\u003eRather than three independent sections, Opera’s crossover combines the woofer and midrange into a compound mid-woofer system. This configuration ensures seamless phase integration while preserving the natural power response through the crossover region. High-quality components like Mundorf capacitors and MOX resistors keep the signal path pure.\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\"\u003eAdaptable Room Positioning\u003c\/h2\u003e\n\u003cp\u003eA rear panel switch allows for subtle bass tuning to suit different placements: close to walls, corners, or asymmetrical setups. Blockable reflex ports further increase control, letting you voice each speaker independently to match the room’s behavior. Whether 20 cm or 2 meters from the wall, the Grand Callas adapts.\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThree-way floorstanding with rear dipole radiation and blockable bass reflex ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Drivers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 x 8\" long-throw woofers, 1 x 7\" annealed polypropylene midrange, 1 x 1\" Scanspeak 9700 tweeter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Drivers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 x 1\" tweeters in natural dipole configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 Hz to 25,000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e89 dB \/ 2.83V \/ 1m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 ohms (Zmin \u0026gt; 3.2 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Amplifier Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 watts RMS minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power Handling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e240 watts long-term, 500 watts short-term (no clipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCrossover Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz and 2000 Hz (approximate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCrossover Slopes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 dB\/octave (woofers, midrange, rear tweeters), 18 dB\/octave (front tweeter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInternal Volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e92 liters total, 80 liters for woofers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePositioning\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMinimum 20 cm from rear wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e130 x 31 x 55 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 kg each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinishes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWalnut, Mahogany \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Opera","offers":[{"title":"Lacquered Walnut","offer_id":57558833791349,"sku":null,"price":15228.95,"currency_code":"EUR","in_stock":true},{"title":"Mahogany Veneer","offer_id":57558833824117,"sku":null,"price":15228.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2222\/0805\/files\/OperaGrandCallasLoudspeakerWalnut.webp?v=1788882801","url":"https:\/\/www.kronosav.com\/en-ie\/products\/opera-grand-callas-loudspeakers","provider":"Kronos AV","version":"1.0","type":"link"}