{"product_id":"dolby-218-i-bk-dual-18-inch-flyable-installation-subwoofer","title":"Dolby 218-I-BK – Dual 18-Inch Flyable Installation Subwoofer","description":"\u003ch2\u003eWhat is the Dolby 218-I-BK?\u003c\/h2\u003e\n\u003cp\u003eThe Dolby 218-I-BK is a high-performance, flyable dual 18-inch subwoofer for cinema auditoriums and professional installations. Integrated rigging points allow it to be suspended from the ceiling or a side wall, making it well suited to bass-management surround duty in Dolby Atmos rooms. Both 18-inch drivers use neodymium magnet structures for low weight and high-temperature voice coils with a large Xmech rating.\u003c\/p\u003e\n\n\u003ch2\u003eHow does the Dolby 218-I-BK work?\u003c\/h2\u003e\n\u003cp\u003eDolby Atmos processors redirect low-frequency content from surround and overhead channels to dedicated bass-management subwoofers. The 218-I-BK handles that duty from an elevated position near the surround arrays, where floor-standing cabinets are often impractical. It is a passive 4-ohm cabinet rated at 1200 W (64 V) and is driven from an external amplifier channel.\u003c\/p\u003e\n\u003cp\u003eThe operating range is 35 Hz to 180 Hz with 102 dB sensitivity, and calculated maximum output is 133 dB continuous and 139 dB peak at one metre. Angled woofers keep the front surface area small, and the 13-ply wood cabinet is extensively braced. Sixteen M10-1.5 threaded inserts serve as rigging points.\u003c\/p\u003e\n\u003cp\u003eA typical system feeds the 218-I-BK from a \u003ca href=\"https:\/\/creationnetworks.net\/products\/dolby-atmos-cinema-processor-cp950a\"\u003eDolby CP950A\u003c\/a\u003e through a Dolby Multichannel Amplifier such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/dolby-professional-dma32301-32-channels-multichannel-amplifier\"\u003eDMA24302\u003c\/a\u003e, with wiring landed on Dolby's spring-loaded input plate.\u003c\/p\u003e\n\n\u003ch2\u003eWhat are the key features of the Dolby 218-I-BK?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 18-inch neodymium drivers\u003c\/strong\u003e — two lightweight neo-motor woofers deliver 1200 W handling in a flyable 128 lb cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlyable design\u003c\/strong\u003e — sixteen M10-1.5 threaded rigging points support ceiling or side-wall suspension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temperature voice coils\u003c\/strong\u003e — a large Xmech rating supports reliable operation at sustained output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAngled woofers\u003c\/strong\u003e — a minimal front surface area reduces visual impact in surround positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBraced 13-ply wood cabinet\u003c\/strong\u003e — extensive internal bracing controls resonance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring-loaded input plate\u003c\/strong\u003e — the advanced input plate speeds field wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhere is the Dolby 218-I-BK typically used?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDolby Atmos cinema auditorium\u003c\/li\u003e\n\u003cli\u003eScreening room\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;max-width:640px;min-width:300px;table-layout:fixed;border-collapse:collapse;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:38%\"\u003e\n\u003ccol style=\"width:62%\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e218-I-BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e35 Hz - 180 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eSensitivity (1 W @ 1 m)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e102 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003ePower handling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e1200 W (64 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum (calculated) @ 1 m\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e133 dB continuous \/ 139 dB peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eNominal impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e4 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eTransducers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e2 x 18\" woofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eAdvanced spring-loaded input plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e13-ply wood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eRigging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e(16) rigging points (M10-1.5 threaded inserts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions (unit)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e20.23\" H x 35\" W x 35.4\" D (51.4 x 88.9 x 89.9 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eWeight (unit)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e128 lb (58.1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eWeight (shipping)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e143 lb (64.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDoes the 218-I-BK work with Dolby Atmos processors?\u003c\/h3\u003e\n\u003cp\u003eYes. It is designed for cinema auditoriums and bass-management duty in Dolby Atmos rooms, fed from a Dolby processor such as the CP950A or \u003ca href=\"https:\/\/creationnetworks.net\/products\/dolby-cp950-audio-processor\"\u003eCP950\u003c\/a\u003e through external amplification.\u003c\/p\u003e\n\u003ch3\u003eHow is the 218-I-BK installed?\u003c\/h3\u003e\n\u003cp\u003eIt uses sixteen M10-1.5 threaded inserts for flying or wall mounting. A qualified installer must select rated rigging hardware and structure following Dolby's owner's manual.\u003c\/p\u003e\n\u003ch3\u003eWhat load does it present to the amplifier?\u003c\/h3\u003e\n\u003cp\u003eThe 218-I-BK has a 4-ohm nominal impedance with 1200 W (64 V) power handling. Creation Networks sizes Dolby Multichannel Amplifier channels to suit during design.\u003c\/p\u003e\n\u003ch3\u003eHow does it compare with the 118-I-BK?\u003c\/h3\u003e\n\u003cp\u003eThe 118-I-BK uses one 18-inch driver at 8 ohms and 600 W. The 218-I-BK doubles the drivers for 1200 W handling and 133 dB continuous output.\u003c\/p\u003e\n\u003ch3\u003eWhat warranty and support are included?\u003c\/h3\u003e\n\u003cp\u003eThe 218-I-BK carries Dolby's manufacturer warranty, confirmed with your quote. Creation Networks designs, installs and supports Dolby cinema sound; see the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/dolby-professional\"\u003eDolby Professional collection\u003c\/a\u003e and request a quote.\u003c\/p\u003e","brand":"Dolby Professional","offers":[{"title":"Default Title","offer_id":68118986752236,"sku":"218-I-BK","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/218-generic.png?v=1794126832","url":"https:\/\/creationnetworks.net\/products\/dolby-218-i-bk-dual-18-inch-flyable-installation-subwoofer","provider":"Creation Networks","version":"1.0","type":"link"}