{"product_id":"sa-series-v-2-18-subwoofer","title":"SA-Series v.2 18\" Subwoofer","description":"\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eRMS 1000 watts\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eDual 2 or 4 ohm voice coils\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eVented magnetic gap\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eAluminum 2.75” voice coil former for superior heat dissipation\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eInnovative high-velocity vented frame spacer ring\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eLarge aluminum Faraday ring for smooth acoustic response\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003ePatented high-strength cast aluminum frame\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eHigh-temperature voice coil wire\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eSpring-loaded terminals\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eStitched-on double “XL” tinsel lead wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eA top-down improvement from previous models, the SA 18-inch sub features the largest motor in the series, now delivering over 35mm of mechanical excursion. The 2.75” coil punches way above its weight, outperforming most 3” coils without adding mass. The motor also features a large magnet shorting ring (faraday ring) to reduce distortion and deliver smoother response across the entire acoustic spectrum. The motor and coil setup is mated to an extremely robust double-layer spider with fully tied-on \u0026amp; doubled-up “XL” tinsel leads. A competition-grade paper cone and a strong foam surround were used to complete this masterpiece.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"cus-flex\"\u003e\n\u003cdiv class=\"box-2\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"uk-margin\"\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"uk-text-nowrap\"\u003eT\/S SPECS\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eSAV2 18″ D2\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eSAV2 18″ D4\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRE (Ohms)\u003c\/td\u003e\n\u003ctd\u003e3.97\u003c\/td\u003e\n\u003ctd\u003e6.06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFS (Hz)\u003c\/td\u003e\n\u003ctd\u003e29.051\u003c\/td\u003e\n\u003ctd\u003e31.868\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVAS (L)\u003c\/td\u003e\n\u003ctd\u003e114.234\u003c\/td\u003e\n\u003ctd\u003e106.964\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQes\u003c\/td\u003e\n\u003ctd\u003e0.424\u003c\/td\u003e\n\u003ctd\u003e0.458\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQms\u003c\/td\u003e\n\u003ctd\u003e3.052\u003c\/td\u003e\n\u003ctd\u003e2.853\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQts\u003c\/td\u003e\n\u003ctd\u003e0.372\u003c\/td\u003e\n\u003ctd\u003e0.395\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLe (mH)\u003c\/td\u003e\n\u003ctd\u003e3.6326\u003c\/td\u003e\n\u003ctd\u003e4.7903\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBL (NA)\u003c\/td\u003e\n\u003ctd\u003e32.523\u003c\/td\u003e\n\u003ctd\u003e38.159\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMms (Grams)\u003c\/td\u003e\n\u003ctd\u003e619.174\u003c\/td\u003e\n\u003ctd\u003e549.519\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCms (uM\/N)\u003c\/td\u003e\n\u003ctd\u003e48.474\u003c\/td\u003e\n\u003ctd\u003e45.389\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSens (dB @ 1w\/1m)\u003c\/td\u003e\n\u003ctd\u003e90.1\u003c\/td\u003e\n\u003ctd\u003e90.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXmax\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-3\"\u003e\n\u003ch3\u003eEnclosure Specifications\u003c\/h3\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealed Enclosure\u003c\/td\u003e\n\u003ctd\u003e3.5 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePorted Enclosure\u003c\/td\u003e\n\u003ctd\u003e4.5 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tuning\u003c\/td\u003e\n\u003ctd\u003e35Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Port Area\u003c\/td\u003e\n\u003ctd\u003e64 sq in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement\u003c\/td\u003e\n\u003ctd\u003e0.2 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth\u003c\/td\u003e\n\u003ctd\u003e10.125\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e18.62\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-Out\u003c\/td\u003e\n\u003ctd\u003e16.69″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Dimensions\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-18v2.pdf?v=1688790885\"\u003eDownload\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Linear Audio UK","offers":[{"title":"D2","offer_id":57657762578806,"sku":null,"price":499.99,"currency_code":"GBP","in_stock":true},{"title":"D4","offer_id":57657762611574,"sku":null,"price":499.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0291\/9664\/8482\/files\/sa-series-v2-18-1000w-subwoofer-617088.webp?v=1775952741","url":"https:\/\/www.d2ualternators.com\/products\/sa-series-v-2-18-subwoofer","provider":"D2U Alternators","version":"1.0","type":"link"}