{"product_id":"kef-custom-ci250rrb-thx","title":"Kef Custom Ci250RRb-THX","description":"\u003ch2\u003eExtreme architectural subwoofer for custom home theatre\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKEF Ci250RRb-THX\u003c\/strong\u003e is a flush-mount architectural subwoofer designed to deliver deep, controlled, high-impact bass in high-end home theatre, music and gaming systems. Part of KEF's \u003cstrong\u003eExtreme Home Theatre\u003c\/strong\u003e range, it incorporates a \u003cstrong\u003e250 mm\u003c\/strong\u003e extra-long-throw LF driver with a powerful \u003cstrong\u003e150 oz\u003c\/strong\u003e magnet, designed to generate intense low frequencies with high precision and low distortion. It is the ideal solution for those who want an engaging cinematic experience while keeping the subwoofer perfectly integrated into the room.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0615\/5278\/7645\/files\/KEF-CUSTOM-Ci250RRB-THX-0001_600x600.webp?v=1781085568\" alt=\"image 1\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eDeep bass down to 20 Hz with KASA500 amplification\u003c\/h2\u003e\n\u003cp\u003eThe KEF Ci250RRb-THX is designed to work with the dedicated \u003cstrong\u003eKEF KASA500\u003c\/strong\u003e amplifier, equipped with DSP, so as to obtain maximum control over the low frequencies. In this configuration, the subwoofer achieves a response down to \u003cstrong\u003e20 Hz\u003c\/strong\u003e, with an extension down to \u003cstrong\u003e16 Hz\u003c\/strong\u003e according to the stated range, offering a physical and realistic impact in action scenes, soundtracks and the most dynamic music content. The maximum sound pressure level of \u003cstrong\u003e109 dB\u003c\/strong\u003e ensures energy, presence and a great ability to fill sizeable rooms.\u003c\/p\u003e\n\u003ch2\u003eTHX Ultra certification for cinema rooms and advanced living spaces\u003c\/h2\u003e\n\u003cp\u003eThe KEF Ci250RRb-THX is \u003cstrong\u003eTHX® Certified Ultra\u003c\/strong\u003e in the configuration with four subwoofers driven by one \u003cstrong\u003eKEF KASA500\u003c\/strong\u003e amplifier, while with two units driven by the same amplifier it achieves the performance required by the \u003cstrong\u003eTHX® Select\u003c\/strong\u003e standard. This arrangement makes it particularly suitable for large home theatre rooms, high-end living rooms and custom installations that call for a performance faithful to the sound balance of film productions. The result is powerful yet defined bass, able to make action sequences more engaging and dialogue passages more natural.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0615\/5278\/7645\/files\/KEF-CUSTOM-Ci250RRB-THX-0002_600x600.webp?v=1781085614\" alt=\"image 2\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eDiscreet, robust design with IP64 protection\u003c\/h2\u003e\n\u003cp\u003eDesigned to fit elegantly into the most carefully finished rooms, the KEF Ci250RRb-THX uses an \u003cstrong\u003eUltra-Thin Bezel\u003c\/strong\u003e edge with an extremely small visible frame and a paintable magnetic grille. This solution allows the subwoofer to disappear visually into walls or ceilings, leaving room only for the sound. The \u003cstrong\u003eIP64\u003c\/strong\u003e certification guarantees protection against dust and splashes of water, extending the installation options. The mechanical structure is robust, precise and designed to simplify mounting in high-end professional and residential systems.\u003c\/p\u003e\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eFlush-mount architectural subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eKEF Ci250RRb-THX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003eExtreme Home Theatre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eTHX® Certified Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLF driver\u003c\/td\u003e\n\u003ctd\u003e250 mm \/ 10\" extra-long-throw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver magnet\u003c\/td\u003e\n\u003ctd\u003e150 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired amplifier\u003c\/td\u003e\n\u003ctd\u003eKEF KASA500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20 Hz – KASA setting (±6 dB), open-backed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency range\u003c\/td\u003e\n\u003ctd\u003e16 Hz – KASA setting (-10 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum SPL\u003c\/td\u003e\n\u003ctd\u003e109 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended low-pass filter\u003c\/td\u003e\n\u003ctd\u003e50 Hz – 120 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal dimensions\u003c\/td\u003e\n\u003ctd\u003eDiameter 346 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal depth\u003c\/td\u003e\n\u003ctd\u003e153 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-out\u003c\/td\u003e\n\u003ctd\u003eDiameter 300 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting depth from surface\u003c\/td\u003e\n\u003ctd\u003e147 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdeal rear volume\u003c\/td\u003e\n\u003ctd\u003e140 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum rear volume\u003c\/td\u003e\n\u003ctd\u003e70 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum ceiling thickness\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum ceiling thickness\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eIP64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e5.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSales unit\u003c\/td\u003e\n\u003ctd\u003eSingle piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Kef","offers":[{"title":"Default Title","offer_id":57486162592088,"sku":"SP404044","price":1337.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/5278\/7645\/files\/KEF-CUSTOM-Ci250RRB-THX-FRONT.webp?v=1781085801","url":"https:\/\/videosell.eu\/products\/kef-custom-ci250rrb-thx","provider":"Videosell store","version":"1.0","type":"link"}