{"product_id":"x-series-v-4-18-subwoofer","title":"X-Series v.4 18\" Subwoofer","description":"\u003cp data-start=\"409\" data-end=\"667\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"413\" data-end=\"442\"\u003eSundown Xv4 18″ Subwoofer\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edelivers unmatched power and control for serious bass enthusiasts. Built with high-grade X v.4 coils, this subwoofer is designed to handle up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3000\u003c\/strong\u003e\u003cstrong data-end=\"614\" data-start=\"601\"\u003eW RMS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e6000\u003c\/strong\u003e\u003cstrong data-end=\"639\" data-start=\"619\"\u003eW peak power\u003c\/strong\u003e, ensuring maximum output without distortion.\u003c\/p\u003e\n\u003cp data-start=\"669\" data-end=\"913\"\u003eIts optimized design enhances air movement and cooling, providing long-lasting performance even under heavy use. The advanced motor structure and large cone area (SD 113.41) create powerful low-frequency response and clean sound reproduction.\u003c\/p\u003e\n\u003cp data-start=\"915\" data-end=\"1077\"\u003ePerfect for sealed or ported enclosures, the Xv4 18″ gives you flexibility in setup and tuning — whether for SPL competition or everyday high-quality listening.\u003c\/p\u003e\n\u003cp data-start=\"1079\" data-end=\"1193\"\u003eDurable, reliable, and beautifully crafted, this subwoofer is the next-level upgrade your sound system deserves.\u003c\/p\u003e\n\u003ch3 data-start=\"1200\" data-end=\"1223\"\u003e\u003cstrong data-start=\"1207\" data-end=\"1223\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1224\" data-end=\"1593\"\u003e\n\u003cli data-start=\"1224\" data-end=\"1252\"\u003e\n\u003cp data-start=\"1226\" data-end=\"1252\"\u003e18″ Xv4 Series Subwoofer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1253\" data-end=\"1285\"\u003e\n\u003cp data-start=\"1255\" data-end=\"1285\"\u003e3000W RMS \/ 6000W Peak Power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1286\" data-end=\"1333\"\u003e\n\u003cp data-start=\"1288\" data-end=\"1333\"\u003eDual 1-Ohm or Dual 2-Ohm Voice Coil Options\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1334\" data-end=\"1384\"\u003e\n\u003cp data-start=\"1336\" data-end=\"1384\"\u003ePrecision-engineered X v.4 Coils for stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1385\" data-end=\"1425\"\u003e\n\u003cp data-start=\"1387\" data-end=\"1425\"\u003eHeavy-duty motor with 9.25″ diameter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1426\" data-end=\"1464\"\u003e\n\u003cp data-start=\"1428\" data-end=\"1464\"\u003eDeep bass response with 35 mm Xmax\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1465\" data-end=\"1509\"\u003e\n\u003cp data-start=\"1467\" data-end=\"1509\"\u003eSealed or ported enclosure compatibility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1510\" data-end=\"1544\"\u003e\n\u003cp data-start=\"1512\" data-end=\"1544\"\u003eRecommended Port Tuning: 32 Hz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1545\" data-end=\"1593\"\u003e\n\u003cp data-start=\"1547\" data-end=\"1593\"\u003eBuilt for extreme durability and clean sound\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1600\" data-end=\"1648\"\u003e\u003cstrong data-start=\"1607\" data-end=\"1648\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"1649\" data-end=\"2449\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1649\" data-end=\"1674\"\u003e\n\u003ctr data-start=\"1649\" data-end=\"1674\"\u003e\n\u003cth data-start=\"1649\" data-end=\"1665\" data-col-size=\"sm\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"1665\" data-end=\"1674\" data-col-size=\"sm\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1703\" data-end=\"2449\"\u003e\n\u003ctr data-start=\"1703\" data-end=\"1725\"\u003e\n\u003ctd data-start=\"1703\" data-end=\"1715\" data-col-size=\"sm\"\u003eRMS Power\u003c\/td\u003e\n\u003ctd data-start=\"1715\" data-end=\"1725\" data-col-size=\"sm\"\u003e3000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1726\" data-end=\"1749\"\u003e\n\u003ctd data-start=\"1726\" data-end=\"1739\" data-col-size=\"sm\"\u003ePeak Power\u003c\/td\u003e\n\u003ctd data-start=\"1739\" data-end=\"1749\" data-col-size=\"sm\"\u003e6000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1750\" data-end=\"1779\"\u003e\n\u003ctd data-start=\"1750\" data-end=\"1765\" data-col-size=\"sm\"\u003eDisplacement\u003c\/td\u003e\n\u003ctd data-start=\"1765\" data-end=\"1779\" data-col-size=\"sm\"\u003e0.28 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1780\" data-end=\"1804\"\u003e\n\u003ctd data-start=\"1780\" data-end=\"1797\" data-col-size=\"sm\"\u003eMounting Depth\u003c\/td\u003e\n\u003ctd data-start=\"1797\" data-end=\"1804\" data-col-size=\"sm\"\u003e15″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1805\" data-end=\"1834\"\u003e\n\u003ctd data-start=\"1805\" data-end=\"1824\" data-col-size=\"sm\"\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd data-start=\"1824\" data-end=\"1834\" data-col-size=\"sm\"\u003e18.42″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1835\" data-end=\"1863\"\u003e\n\u003ctd data-start=\"1835\" data-end=\"1853\" data-col-size=\"sm\"\u003eCutout Diameter\u003c\/td\u003e\n\u003ctd data-start=\"1853\" data-end=\"1863\" data-col-size=\"sm\"\u003e16.69″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1864\" data-end=\"1890\"\u003e\n\u003ctd data-start=\"1864\" data-end=\"1881\" data-col-size=\"sm\"\u003eMotor Diameter\u003c\/td\u003e\n\u003ctd data-start=\"1881\" data-end=\"1890\" data-col-size=\"sm\"\u003e9.25″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1891\" data-end=\"1929\"\u003e\n\u003ctd data-start=\"1891\" data-end=\"1910\" data-col-size=\"sm\"\u003eSealed Enclosure\u003c\/td\u003e\n\u003ctd data-start=\"1910\" data-end=\"1929\" data-col-size=\"sm\"\u003eNot Recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1930\" data-end=\"1963\"\u003e\n\u003ctd data-start=\"1930\" data-end=\"1949\" data-col-size=\"sm\"\u003ePorted Enclosure\u003c\/td\u003e\n\u003ctd data-start=\"1949\" data-end=\"1963\" data-col-size=\"sm\"\u003e7.00 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1964\" data-end=\"1999\"\u003e\n\u003ctd data-start=\"1964\" data-end=\"1990\" data-col-size=\"sm\"\u003eRecommended Port Tuning\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1990\" data-end=\"1999\"\u003e32 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2000\" data-end=\"2037\"\u003e\n\u003ctd data-start=\"2000\" data-end=\"2024\" data-col-size=\"sm\"\u003eRecommended Port Area\u003c\/td\u003e\n\u003ctd data-start=\"2024\" data-end=\"2037\" data-col-size=\"sm\"\u003e112 sq in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2038\" data-end=\"2075\"\u003e\n\u003ctd data-start=\"2038\" data-end=\"2062\" data-col-size=\"sm\"\u003e4th Order Sealed Side\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2062\" data-end=\"2075\"\u003e3.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2076\" data-end=\"2113\"\u003e\n\u003ctd data-start=\"2076\" data-end=\"2100\" data-col-size=\"sm\"\u003e4th Order Ported Side\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2100\" data-end=\"2113\"\u003e9.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2114\" data-end=\"2149\"\u003e\n\u003ctd data-start=\"2114\" data-end=\"2136\" data-col-size=\"sm\"\u003e4th Order Port Area\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2136\" data-end=\"2149\"\u003e180 sq in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2150\" data-end=\"2180\"\u003e\n\u003ctd data-start=\"2150\" data-end=\"2174\" data-col-size=\"sm\"\u003e4th Order Port Length\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2174\" data-end=\"2180\"\u003e8″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2181\" data-end=\"2197\"\u003e\n\u003ctd data-start=\"2181\" data-end=\"2188\" data-col-size=\"sm\"\u003eXmax\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2188\" data-end=\"2197\"\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2198\" data-end=\"2225\"\u003e\n\u003ctd data-start=\"2198\" data-end=\"2215\" data-col-size=\"sm\"\u003eSD (Cone Area)\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2215\" data-end=\"2225\"\u003e113.41\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2226\" data-end=\"2253\"\u003e\n\u003ctd data-start=\"2226\" data-end=\"2238\" data-col-size=\"sm\"\u003eRE (Ohms)\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2238\" data-end=\"2253\"\u003e2.05 \/ 3.74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2254\" data-end=\"2281\"\u003e\n\u003ctd data-start=\"2254\" data-end=\"2264\" data-col-size=\"sm\"\u003eFS (Hz)\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2264\" data-end=\"2281\"\u003e25.87 \/ 25.58\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2282\" data-end=\"2301\"\u003e\n\u003ctd data-start=\"2282\" data-end=\"2292\" data-col-size=\"sm\"\u003eVAS (L)\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2292\" data-end=\"2301\"\u003e93.67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2302\" data-end=\"2323\"\u003e\n\u003ctd data-start=\"2302\" data-end=\"2308\" data-col-size=\"sm\"\u003eQes\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2308\" data-end=\"2323\"\u003e0.63 \/ 0.55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2324\" data-end=\"2345\"\u003e\n\u003ctd data-start=\"2324\" data-end=\"2330\" data-col-size=\"sm\"\u003eQms\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2330\" data-end=\"2345\"\u003e4.13 \/ 4.03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2346\" data-end=\"2367\"\u003e\n\u003ctd data-start=\"2346\" data-end=\"2352\" data-col-size=\"sm\"\u003eQts\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2352\" data-end=\"2367\"\u003e0.54 \/ 0.84\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2368\" data-end=\"2394\"\u003e\n\u003ctd data-start=\"2368\" data-end=\"2378\" data-col-size=\"sm\"\u003eBL (NA)\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2378\" data-end=\"2394\"\u003e19.74 \/ 26.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2395\" data-end=\"2420\"\u003e\n\u003ctd data-start=\"2395\" data-end=\"2401\" data-col-size=\"sm\"\u003eMms\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2401\" data-end=\"2420\"\u003e737.81 \/ 656.74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2421\" data-end=\"2449\"\u003e\n\u003ctd data-start=\"2421\" data-end=\"2435\" data-col-size=\"sm\"\u003eSensitivity\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2435\" data-end=\"2449\"\u003e86 \/ 87 dB\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=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Linear Audio UK","offers":[{"title":"D1","offer_id":57657759826294,"sku":null,"price":949.99,"currency_code":"GBP","in_stock":false},{"title":"D2","offer_id":57657759859062,"sku":null,"price":949.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0291\/9664\/8482\/files\/XV418.webp?v=1775952671","url":"https:\/\/www.d2ualternators.com\/products\/x-series-v-4-18-subwoofer","provider":"D2U Alternators","version":"1.0","type":"link"}