{"product_id":"s","title":"SDDN-Series v.1 18\" Subwoofer - Limited Edition","description":"\u003cul\u003e\n\u003cli\u003e3,500 watts RMS\u003c\/li\u003e\n\u003cli\u003eAvailable in 10 through 18-inch versions\u003c\/li\u003e\n\u003cli\u003eDual 1 ohm coils\u003c\/li\u003e\n\u003cli\u003eMega V2 Cone\u003c\/li\u003e\n\u003cli\u003eAluminum 3.3” x  80mm coil\u003c\/li\u003e\n\u003cli\u003eDual 8 AWG terminals with dual-layer tinsel leads\u003c\/li\u003e\n\u003cli\u003eCustom cross-cut pole piece with Neodymium cap for increased output and thermal control\u003c\/li\u003e\n\u003cli\u003e5-layer spider\u003c\/li\u003e\n\u003cli\u003e1,336 oz (83.5 lbs) magnet with integrated thermal ventilation\u003c\/li\u003e\n\u003cli\u003eOptimized for Ported \u0026amp; 6th order enclosures\u003c\/li\u003e\n\u003cli\u003eCarbon cone upgrade available \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned in-house by Sundown Founder Jacob Fuller, the 3,500-watt RMS SDDN is available in 10, 12, 15, and 18-inch models. Each unit boasts a massive 83-pound motor with integrated thermal ventilation, featuring a custom cross-cut pole piece with a Neodymium cap for increased output and thermal control. Sundown’s signature Mega V2 cone is paired with a five-layer spider, a 3.3” x 80mm aluminum voice coil (dual 1-ohm), and dual tinsel leads per eight-gauge terminal. \u003c\/p\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003cp\u003eRe = 2.0333\u003cbr\u003eFs = 30.0404\u003cbr\u003eZmax = 33.3616\u003cbr\u003eQes = 0.3345\u003cbr\u003eQms = 5.1537\u003cbr\u003eQts = 0.3141\u003cbr\u003eLe = 4.2364\u003cbr\u003eDiam = 381.0000\u003cbr\u003eSd = 114009.1866\u003cbr\u003eVas = 72.2840\u003cbr\u003eBL = 28.6825\u003cbr\u003eMms = 717.0201\u003cbr\u003eCms = 39.1469\u003cbr\u003eSensitivity 1w\/1m = 89.4252\u003cbr\u003eXmax = 35mm\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SDDN_18.jpg?v=1721766512\"\u003e\u003c\/p\u003e","brand":"Linear Audio UK","offers":[{"title":"D1","offer_id":57657760579958,"sku":null,"price":1499.99,"currency_code":"GBP","in_stock":true},{"title":"D2","offer_id":57657760612726,"sku":null,"price":1499.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0291\/9664\/8482\/files\/SDDN-18-000_b4a8010b-90f0-417c-8c13-c7c8ec9fb392.webp?v=1775952692","url":"https:\/\/www.d2ualternators.com\/products\/s","provider":"D2U Alternators","version":"1.0","type":"link"}