{"product_id":"kef-ci250rrb-thx-in-wall-subwoofers","title":"KEF - Ci250RRb-THX - In-Wall Subwoofers","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe Ci250RRb-THX is a round passive in-ceiling subwoofer from KEF's Ci-R Series, using an extra-long-throw 250 mm bass driver with a 150 oz magnet. It is THX Certified Ultra and THX Certified Select depending on system configuration.\u003c\/p\u003e\u003cp\u003eIt has no built-in amplifier and is designed to be driven by KEF's DSP-equipped KASA500 amplifier (sold separately). KEF rates it to 20 Hz with a maximum SPL of 109 dB.\u003c\/p\u003e\u003ch2\u003eDrivers and Technology\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e250 mm (10 in.) extra-long-throw bass driver with 150 oz magnet\u003c\/li\u003e\n\u003cli\u003ePassive design, requires the KEF KASA500 amplifier (sold separately)\u003c\/li\u003e\n\u003cli\u003eTHX Certified Ultra \/ THX Certified Select, depending on configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTHX System Configurations (per KEF)\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMedium room, THX Certified Select (up to 2,000 cubic feet): 1 x KASA500 with 2 x Ci250RRb-THX\u003c\/li\u003e\n\u003cli\u003eLarge room, THX Certified Ultra (up to 3,000 cubic feet): 1 x KASA500 with 4 x Ci250RRb-THX\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIn-ceiling mounting, 300 mm round cut-out\u003c\/li\u003e\n\u003cli\u003eMounting depth from surface 147 mm, ceiling thickness 6 to 30 mm\u003c\/li\u003e\n\u003cli\u003eIdeal rear volume 140 L, minimum rear volume 70 L\u003c\/li\u003e\n\u003cli\u003eUltra-Thin Bezel (UTB) with paintable magnetic grille\u003c\/li\u003e\n\u003cli\u003eIP64 dust and water rating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePassive in-ceiling subwoofer, Ci-R Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive Units\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLF: 250 mm (10 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRequired Amplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKEF KASA500 (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response (±6 dB, open-backed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Hz - KASA500 setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range (-10 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 Hz - KASA500 setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum SPL (at 1 m)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e109 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Low-Pass Filter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 Hz - 120 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e346 mm diameter x 153 mm depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCut-Out Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Depth From Surface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e147 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 mm minimum, 30 mm maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIdeal \/ Minimum Rear Volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140 L \/ 70 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDust and Water Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTHX Certified Ultra, THX Certified Select\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUnit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"KEF","offers":[{"title":"Default Title","offer_id":50715352170753,"sku":"SP4040AA","price":2700.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1133\/9398\/files\/KEF-Ci250RRb-THX-In-Wall-Subwoofers-australia.jpg?v=1791952346","url":"https:\/\/sydneyhifimonavale.com.au\/products\/kef-ci250rrb-thx-in-wall-subwoofers","provider":"Sydney Hi-Fi Mona Vale","version":"1.0","type":"link"}