{"product_id":"opera-callas-bookshelf-speakers-pair","title":"Opera Callas Bookshelf Speakers; pair","description":"\u003cp class=\"p1\"\u003eThe Opera Callas is a two-way, rear-ported standmount speaker handcrafted in Italy, built around a 7\" Seas woofer and a Scanspeak 9700 tweeter for a focused, three-dimensional soundstage. Compact in size, it is anything but small in sound. Every choice, from the acoustic-trap cabinet to the switchable midrange, was made through exhaustive listening to keep music engaging and fatigue-free, whether you are relaxing to jazz or following the finer points of a string quartet.\u003c\/p\u003e\n\u003ch5\u003eKey Features of the Opera Callas\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Way Reflex Design:\u003c\/strong\u003e Compact 14-liter enclosure with rear porting for extended low-frequency response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeas Woofer:\u003c\/strong\u003e Custom 7\" long-throw polypropylene woofer with annealed diaphragm and copper rings above and below the T-shaped pole piece\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScanspeak 9700 Tweeter:\u003c\/strong\u003e A 1\" tweeter without ferrofluid, with a double decompression chamber; Opera calls it one of the best tweeters ever made, and highly reliable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitchable Midrange Output:\u003c\/strong\u003e Adjustable +2 dB boost between 300 and 3000 Hz to fine-tune voice presentation to suit room acoustics and taste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcoustic Trap Cabinet:\u003c\/strong\u003e Non-parallel side walls with layered polyurethane foam to suppress internal reflections and cabinet resonance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-End Crossover:\u003c\/strong\u003e 2nd-order network built with Mundorf capacitors, MOX resistors, and OFC inductors; bi-amp ready\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Italian Finishes:\u003c\/strong\u003e Lacquered Walnut or Mahogany over a curved cabinet with a black grain-textured front, handcrafted in Treviso\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAcoustic Trap Cabinet\u003c\/h5\u003e\n\u003cp class=\"p1\"\u003eThe Callas cabinet isn’t just rigid, it’s a carefully engineered acoustic chamber. With 14 liters of internal volume dedicated to the woofer, the enclosure uses a combination of MDF and curved plywood veneer. The panel thickness varies from 25mm on the sides to 50mm on the front, with milled inner edges to minimize turbulence near the driver membranes. Non-parallel walls combat standing waves, and two layers of absorbent foam (20 cm thick total) act as an acoustic trap. This open-cell foam features a pyramidal profile (7x7 cm base, 3 to 7 cm height), absorbing 60% at 250 Hz and almost 100% at 500 Hz. By killing reflections rather than coating the entire interior, Opera achieves a midrange with exceptional transparency and articulation.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/opera-callas-cabinet-mahogany.jpg?v=1780663520\" alt=\"Opera Callas standmount speaker in lacquered Mahogany, grille off, showing the curved wood side panel, grain-textured black front, Seas woofer, and gloss-black top with gold Callas script\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\u003ch5\u003eSeas Woofer and Scanspeak Tweeter\u003c\/h5\u003e\n\u003cp class=\"p1\"\u003eThe woofer is a 7\" custom Seas unit with an annealed polypropylene diaphragm, optimized for a balance of internal damping and rigidity. The copper rings positioned above and below the T-shaped pole piece help suppress distortion, and its 12mm pk-pk displacement ensures clean, extended bass. Capable of maintaining accuracy well past its 2000 Hz crossover point, it allows for smooth integration with the tweeter across multiple octaves. Opera calls the Scanspeak 9700 one of the best tweeters ever made, and chooses tweeters with a very wide frequency response and wide linear displacement. Used across Opera’s flagship models, it brings an unmistakable clarity and balance to the top end.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/opera-callas-drivers-walnut.jpg?v=1780663525\" alt=\"Close-up of the Opera Callas drivers in Walnut, showing the Scanspeak 9700 tweeter, the grain-textured black front, and the gold Callas script on the gloss-black top\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\u003ch5\u003eCrossover, Bi-Amping, and the Vocal Switch\u003c\/h5\u003e\n\u003cp class=\"p1\"\u003eThe Callas crossover employs a 2nd-order low-pass for the woofer and a 2nd-order high-pass for the tweeter, with electrical phase transitions carefully controlled across the bandwidth. Component selection is uncompromising: high-quality Mundorf capacitors, MOX resistors, and OFC inductors are laid out to minimize mutual inductance and preserve clarity. The two crossover sections are completely separated, so the Callas is bi-amp and bi-wire ready through its gold High and Low binding posts.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eA rear EQ switch lets you voice the speaker to your room. It raises the 300 to 3000 Hz vocal range by +2 dB, and Opera suggests choosing whichever position sounds better to you, set the same way on both speakers. That single control adapts the Callas to everything from a cozy, well-damped den to a livelier, more reflective living space.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/opera-callas-rear-crossover-walnut.jpg?v=1780663530\" alt=\"Rear panel of the Opera Callas in Walnut, showing the bass-reflex port, the EQ plus\/minus vocal switch, the 4-ohm marking, and the gold High and Low bi-amp binding posts\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\u003ch5\u003eFinishes and Italian Craftsmanship\u003c\/h5\u003e\n\u003cp class=\"p1\"\u003eThe Callas is built by hand in Treviso, Italy, and offered in two lacquered real-wood finishes: warm Walnut and deep Mahogany. Each cabinet pairs a curved wood side panel with a black, grain-textured front and a gloss-black top carrying the gold Callas script. A contoured grille covers the drivers when you want it. The whole speaker is built to be lived with and looked at, not just listened to.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/opera-callas-grille-walnut.jpg?v=1780663535\" alt=\"Opera Callas standmount in Walnut with the contoured grille fitted, showing the curved wood side and gloss-black top with gold Callas script\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\u003ch5\u003eMore in the Opera Callas Line\u003c\/h5\u003e\n\u003cp class=\"p1\"\u003eThe Callas is the standmount in Opera’s Callas line, the maker’s reference series. Step up to its three-way floorstanding siblings for deeper bass, or add the matching stand to set it at the right listening height.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/opera-callas-diva-floorstanding-speakers-pair\"\u003eOpera Callas Diva\u003c\/a\u003e\u003c\/strong\u003e: The floorstanding Callas, a three-way design that reaches 30Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/opera-grand-callas-loudspeakers-pair\"\u003eOpera Grand Callas\u003c\/a\u003e\u003c\/strong\u003e: The three-way Callas floorstander, with a dipole rear-firing radiation system and two 8\" woofers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/opera-sp1-speaker-stand-pair\"\u003eOpera SP1 Speaker Stand\u003c\/a\u003e\u003c\/strong\u003e: The Opera stand, sized to bring the Callas to the right listening height.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eThe Listening Room Difference\u003c\/h5\u003e\n\u003cp class=\"p1\"\u003eWe’re a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. Whether you’re visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don’t just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.\u003c\/p\u003e\n\u003ch5\u003eOpera Callas Specifications\u003c\/h5\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eSystem\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003eTwo-way standmount, rear-ported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eCabinet Volume\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e14 liters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eFrequency Response\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e40 to 25,000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eWoofer\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e1 × 7\" Seas long-throw, annealed polypropylene cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eTweeter\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e1 × 1\" Scanspeak 9700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eSensitivity\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e89 dB \/ 2.83V \/ 1m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eImpedance\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e4 ohms (Zmin \u0026gt; 3 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eRecommended Amp Power\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003eFrom 10 watts (100 watts RMS maximum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eMax Power Handling\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e100 watts RMS (music program with crest factor \u0026gt; 5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eCrossover\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e2nd order, ~2000 Hz, bi-amp ready\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eMidrange Switch\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e+2 dB between 300 and 3000 Hz (rear-mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eDimensions (H × W × D)\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e42 × 24.5 × 42 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eWeight\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003e15 kg each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eFinishes\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003eLacquered Walnut, Lacquered Mahogany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#f3f3f3;padding:12px;width:34%;\"\u003e\u003cb\u003eMade in\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:12px;width:66%;\"\u003eItaly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Opera","offers":[{"title":"Walnut","offer_id":67848738308465,"sku":"OPACBSWA","price":3964.39,"currency_code":"USD","in_stock":true},{"title":"Mahogany (Special Order)","offer_id":67848738341233,"sku":"OPACBSMA","price":3964.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5215\/1921\/files\/OperaCallasBookshelfSpeakersWalnutdiagonalview.jpg?v=1792519208","url":"https:\/\/sliyden.store\/products\/opera-callas-bookshelf-speakers-pair","provider":"sliyden.store","version":"1.0","type":"link"}