{"product_id":"kef-ci250rrm-thx-10-inch-3-way-thx-ultra-in-ceiling-speaker","title":"KEF Ci250RRM-THX 10\" 3-Way THX Ultra In-Ceiling Speaker","description":"\u003cp\u003eThe KEF Ci250RRM-THX is KEF's first architectural speaker with Metamaterial Absorption Technology (MAT). A 12th-generation Uni-Q driver array sits in front of a 10in bass driver to make a true three-way coaxial in-ceiling speaker, with the scale and bass extension for large home cinemas and living rooms.\u003c\/p\u003e\n\u003ch3\u003eWhy we like it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThree-way coaxial design: 10in bass driver plus 4in Uni-Q midrange with a MAT-equipped tweeter\u003c\/li\u003e\n\u003cli\u003eMetamaterial Absorption Technology absorbs 99% of unwanted sound from the back of the tweeter for cleaner, more natural treble\u003c\/li\u003e\n\u003cli\u003eBass extension down to 28Hz (±6dB), so it can work without a subwoofer in many rooms\u003c\/li\u003e\n\u003cli\u003eTHX Certified Ultra and IP64 rated\u003c\/li\u003e\n\u003cli\u003eUltra-Thin Bezel and paintable magnetic grille\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cp\u003eThe Ci250RRM-THX needs a 300mm round cut-out and 168mm of mounting depth from the surface, so check ceiling void depth before you buy. KEF recommends an ideal rear volume of 150 litres (80 litres minimum). It is an 8 ohm speaker with 50-250W recommended amplifier power, so it suits an AV receiver or dedicated power amplifier.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd\u003e8 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e89dB (2.83V\/1m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e28Hz - 20kHz (±6dB), open-backed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrossover Frequency\u003c\/td\u003e\n\u003ctd\u003e540Hz, 2.6kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Units\u003c\/td\u003e\n\u003ctd\u003eLF: 250mm (10in); MF: 100mm (4in) Uni-Q; HF: 19mm (0.75in) vented aluminium dome with MAT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Amplifier Power\u003c\/td\u003e\n\u003ctd\u003e50 - 250W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum SPL\u003c\/td\u003e\n\u003ctd\u003e111dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Dimensions\u003c\/td\u003e\n\u003ctd\u003eDiameter 346mm; Depth 175mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-out Diameter\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Depth from Surface\u003c\/td\u003e\n\u003ctd\u003e168mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP64\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\u003c\/table\u003e","brand":"KEF","offers":[{"title":"Single","offer_id":55536896377171,"sku":"Ci250RRM-THX","price":1449.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1115\/1323\/9891\/files\/kef-ci250rrm-thx-10-inch-3-way-thx-ultra-in-ceilin-1-grille-detail.jpg?v=1792501747","url":"https:\/\/www.ceiling-speakers.co\/products\/kef-ci250rrm-thx-10-inch-3-way-thx-ultra-in-ceiling-speaker","provider":"Ceiling Speaker Warehouse","version":"1.0","type":"link"}