{"product_id":"ruthless-audio-15-neo-4vc-subwoofer","title":"Ruthless Audio 15\" Neo 4\"VC Subwoofer","description":"\u003cp data-start=\"0\" data-end=\"90\"\u003e\u003cstrong data-start=\"0\" data-end=\"63\"\u003eRuthless Audio Ultra Series Subwoofer 15\" and 18\" 4500W RMS\u003c\/strong\u003e\u003cbr data-start=\"63\" data-end=\"66\"\u003eSold by AudioSellerz.com\u003c\/p\u003e\n\u003cp data-start=\"92\" data-end=\"624\"\u003eIf you are building a serious bass setup and need a subwoofer that can handle real power, the \u003cstrong data-start=\"186\" data-end=\"217\"\u003eRuthless Audio Ultra Series\u003c\/strong\u003e is built for exactly that kind of system. Available in \u003cstrong data-start=\"273\" data-end=\"288\"\u003e15\" and 18\"\u003c\/strong\u003e sizes and rated at \u003cstrong data-start=\"308\" data-end=\"326\"\u003e4500 watts RMS\u003c\/strong\u003e, the \u003cstrong data-start=\"332\" data-end=\"367\"\u003eRuthless Ultra Series subwoofer\u003c\/strong\u003e is made for people who want huge output, strong cooling, and the kind of performance that works in both daily systems and extreme SPL builds. Shop more \u003cstrong data-start=\"520\" data-end=\"564\"\u003eRuthless Audio subwoofers and amplifiers\u003c\/strong\u003e here:\u003cbr data-start=\"570\" data-end=\"573\"\u003e\u003ca data-start=\"573\" data-end=\"624\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/collections\/ruthless-audio\"\u003ehttps:\/\/audiosellerz.com\/collections\/ruthless-audio\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse fill=\"currentColor\" href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"626\" data-end=\"963\"\u003eThe \u003cstrong data-start=\"630\" data-end=\"651\"\u003eRuthless Ultra 15\u003c\/strong\u003e and \u003cstrong data-start=\"656\" data-end=\"677\"\u003eRuthless Ultra 18\u003c\/strong\u003e were designed for people who do not want to compromise on power, control, or durability. With advanced staged cooling and inductance control built into the design, this subwoofer is made to deliver serious bass while helping keep temperatures in check when the system gets pushed hard.\u003c\/p\u003e\n\u003cp data-start=\"965\" data-end=\"1392\"\u003eRated at \u003cstrong data-start=\"974\" data-end=\"992\"\u003e4500 watts RMS\u003c\/strong\u003e, the \u003cstrong data-start=\"998\" data-end=\"1029\"\u003eRuthless Audio Ultra Series\u003c\/strong\u003e is available in \u003cstrong data-start=\"1046\" data-end=\"1062\"\u003edual 0.7 ohm\u003c\/strong\u003e and \u003cstrong data-start=\"1067\" data-end=\"1083\"\u003edual 1.7 ohm\u003c\/strong\u003e configurations, giving you flexibility when matching the final load to your amplifier and system goals. If you need help figuring out the right final ohm load for your build, read our \u003cstrong data-start=\"1268\" data-end=\"1302\"\u003ecar audio wiring diagram guide\u003c\/strong\u003e here:\u003cbr data-start=\"1308\" data-end=\"1311\"\u003e\u003ca data-start=\"1311\" data-end=\"1392\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/car-audio-wiring-diagram-guide\"\u003ehttps:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/car-audio-wiring-diagram-guide\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse fill=\"currentColor\" href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"1394\" data-end=\"1927\"\u003eA big part of what makes the \u003cstrong data-start=\"1423\" data-end=\"1460\"\u003eRuthless Ultra Series 15\" and 18\"\u003c\/strong\u003e stand out is the cooling system. \u003cstrong data-start=\"1494\" data-end=\"1505\"\u003eStage 1\u003c\/strong\u003e uses a machined aluminum pole sleeve for heat wicking and inductance reduction. \u003cstrong data-start=\"1586\" data-end=\"1597\"\u003eStage 2\u003c\/strong\u003e adds an aluminum domed compression cap for increased cooling and improved linearity. \u003cstrong data-start=\"1683\" data-end=\"1694\"\u003eStage 3\u003c\/strong\u003e brings in a finned aluminum extrusion that cuts inductance dramatically while maximizing thermal dissipation. The result is a \u003cstrong data-start=\"1821\" data-end=\"1849\"\u003eRuthless Ultra subwoofer\u003c\/strong\u003e that is built to stay more controlled and consistent at higher output levels.\u003c\/p\u003e\n\u003cp data-start=\"1929\" data-end=\"2448\"\u003eThe motor and suspension are built for serious use. This sub features an \u003cstrong data-start=\"2002\" data-end=\"2044\"\u003eopen column FEA-optimized motor design\u003c\/strong\u003e with ultra-high flux density and a \u003cstrong data-start=\"2080\" data-end=\"2114\"\u003e4\" diameter 4-layer voice coil\u003c\/strong\u003e for durability under heavy load. A \u003cstrong data-start=\"2150\" data-end=\"2186\"\u003ekraft pulp fiber reinforced cone\u003c\/strong\u003e, \u003cstrong data-start=\"2188\" data-end=\"2221\"\u003edual-layer wide foam surround\u003c\/strong\u003e, and \u003cstrong data-start=\"2227\" data-end=\"2267\"\u003e5-layer progressive soft spider pack\u003c\/strong\u003e help the sub stay stable and controlled while moving a lot of air. The \u003cstrong data-start=\"2339\" data-end=\"2375\"\u003eextra heavy-duty aluminum basket\u003c\/strong\u003e and \u003cstrong data-start=\"2380\" data-end=\"2402\"\u003ewrap-around gasket\u003c\/strong\u003e help complete a structure built for hard use.\u003c\/p\u003e\n\u003cp data-start=\"2450\" data-end=\"2759\"\u003eThe \u003cstrong data-start=\"2454\" data-end=\"2495\"\u003eRuthless Audio Ultra Series subwoofer\u003c\/strong\u003e also uses \u003cstrong data-start=\"2506\" data-end=\"2532\"\u003e144-count tinsel leads\u003c\/strong\u003e that are double-sewn to the spider pack, along with \u003cstrong data-start=\"2585\" data-end=\"2647\"\u003eheavy-duty stitched hybrid lead or push\/hybrid termination\u003c\/strong\u003e depending on configuration. Every part of this sub is aimed at high-output performance and real-world strength.\u003c\/p\u003e\n\u003cp data-start=\"2761\" data-end=\"2951\"\u003eIf you are pairing a subwoofer like this with serious amplifier power, your supporting electrical matters too. Shop our \u003cstrong data-start=\"2881\" data-end=\"2895\"\u003eBig 3 Kits\u003c\/strong\u003e here:\u003cbr data-start=\"2901\" data-end=\"2904\"\u003e\u003ca data-start=\"2904\" data-end=\"2951\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\"\u003ehttps:\/\/audiosellerz.com\/collections\/big-3-kits\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse fill=\"currentColor\" href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"2953\" data-end=\"3154\"\u003eIf you are stepping into a larger high-output build, shop our \u003cstrong data-start=\"3015\" data-end=\"3038\"\u003eBrand X Alternators\u003c\/strong\u003e here:\u003cbr data-start=\"3044\" data-end=\"3047\"\u003e\u003ca data-start=\"3047\" data-end=\"3154\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/collections\/brand-x-electrical-alternators-batteries-high-output-charging-upgrades\"\u003ehttps:\/\/audiosellerz.com\/collections\/brand-x-electrical-alternators-batteries-high-output-charging-upgrades\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse fill=\"currentColor\" href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"3156\" data-end=\"3352\"\u003eYou can also learn more about charging support for bigger systems in our \u003cstrong data-start=\"3229\" data-end=\"3260\"\u003ehigh output alternator blog\u003c\/strong\u003e here:\u003cbr data-start=\"3266\" data-end=\"3269\"\u003e\u003ca data-start=\"3269\" data-end=\"3352\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/high-output-alternator-car-audio\"\u003ehttps:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/high-output-alternator-car-audio\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" aria-hidden=\"true\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cuse fill=\"currentColor\" href=\"\/cdn\/assets\/sprites-core-97566a9e.svg#304883\"\u003e\u003c\/use\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-start=\"3354\" data-end=\"3754\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eBuilt in-house from U.S.-sourced materials, the \u003cstrong data-start=\"3402\" data-end=\"3427\"\u003eRuthless Ultra Series\u003c\/strong\u003e is made for people who want clean, powerful bass at extreme output levels. Whether you are putting together a hard-hitting daily driver, a demo vehicle, or an SPL-focused build, the \u003cstrong data-start=\"3610\" data-end=\"3631\"\u003eRuthless Ultra 15\u003c\/strong\u003e and \u003cstrong data-start=\"3636\" data-end=\"3657\"\u003eRuthless Ultra 18\u003c\/strong\u003e are built to take serious power and deliver the kind of low-end performance bassheads are after.\u003c\/p\u003e","brand":"Ruthless Audio","offers":[{"title":"D 0.7","offer_id":44492127928460,"sku":null,"price":1349.95,"currency_code":"USD","in_stock":true},{"title":"D 1.7","offer_id":44492127961228,"sku":null,"price":1349.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5076\/8524\/files\/IMG_20250720_135009.webp?v=1757922428","url":"https:\/\/audiosellerz.com\/products\/ruthless-audio-15-neo-4vc-subwoofer","provider":"Audio Sellerz","version":"1.0","type":"link"}