{"product_id":"ruthless-audio-15-neo-4vc-subwoofer-copy","title":"Ruthless Audio 18\" 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=\"636\"\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=\"350\"\u003eRuthless Ultra\u003c\/strong\u003e is made for people who want huge output, strong thermal control, and the kind of performance that works in both hard-hitting daily systems and extreme SPL builds. You can shop more \u003cstrong data-start=\"532\" data-end=\"576\"\u003eRuthless Audio subwoofers and amplifiers\u003c\/strong\u003e here:\u003cbr data-start=\"582\" data-end=\"585\"\u003e\u003ca data-start=\"585\" data-end=\"636\" 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=\"638\" data-end=\"1063\"\u003eThe \u003cstrong data-start=\"642\" data-end=\"683\"\u003eRuthless Audio Ultra Series subwoofer\u003c\/strong\u003e was designed around power, cooling, and consistency. With an advanced staged cooling and inductance control system, this sub is built to help manage heat while keeping performance strong when the system is pushed hard. If you are looking for a \u003cstrong data-start=\"928\" data-end=\"954\"\u003eRuthless 15\" subwoofer\u003c\/strong\u003e or \u003cstrong data-start=\"958\" data-end=\"984\"\u003eRuthless 18\" subwoofer\u003c\/strong\u003e that is made for real abuse, the Ultra Series is built for that level of work.\u003c\/p\u003e\n\u003cp data-start=\"1065\" data-end=\"1629\"\u003eThe cooling system is a major part of what makes the \u003cstrong data-start=\"1118\" data-end=\"1139\"\u003eRuthless Ultra 15\u003c\/strong\u003e and \u003cstrong data-start=\"1144\" data-end=\"1165\"\u003eRuthless Ultra 18\u003c\/strong\u003e stand out. \u003cstrong data-start=\"1177\" data-end=\"1188\"\u003eStage 1\u003c\/strong\u003e uses a machined aluminum pole sleeve for heat wicking and inductance reduction. \u003cstrong data-start=\"1269\" data-end=\"1280\"\u003eStage 2\u003c\/strong\u003e adds an aluminum domed compression cap to increase cooling and improve linearity. \u003cstrong data-start=\"1363\" data-end=\"1374\"\u003eStage 3\u003c\/strong\u003e brings the full system together with a finned aluminum extrusion that cuts inductance significantly while maximizing thermal dissipation. That means the \u003cstrong data-start=\"1528\" data-end=\"1556\"\u003eRuthless Ultra subwoofer\u003c\/strong\u003e is built to stay more controlled and consistent when power levels climb.\u003c\/p\u003e\n\u003cp data-start=\"1631\" data-end=\"2161\"\u003eThis subwoofer also uses an \u003cstrong data-start=\"1659\" data-end=\"1701\"\u003eopen column FEA-optimized motor design\u003c\/strong\u003e with ultra-high flux density and a \u003cstrong data-start=\"1737\" data-end=\"1771\"\u003e4\" diameter 4-layer voice coil\u003c\/strong\u003e for durability under heavy load. The \u003cstrong data-start=\"1809\" data-end=\"1845\"\u003ekraft pulp fiber reinforced cone\u003c\/strong\u003e and \u003cstrong data-start=\"1850\" data-end=\"1883\"\u003edual-layer wide foam surround\u003c\/strong\u003e help the sub stay composed while moving serious air. A \u003cstrong data-start=\"1939\" data-end=\"1979\"\u003e5-layer progressive soft spider pack\u003c\/strong\u003e adds more stability and excursion control, while the \u003cstrong data-start=\"2033\" data-end=\"2063\"\u003eheavy-duty aluminum basket\u003c\/strong\u003e and \u003cstrong data-start=\"2068\" data-end=\"2090\"\u003ewrap-around gasket\u003c\/strong\u003e help finish off a structure that is clearly built for high-output use.\u003c\/p\u003e\n\u003cp data-start=\"2163\" data-end=\"2563\"\u003eThe \u003cstrong data-start=\"2167\" data-end=\"2218\"\u003eRuthless Audio Ultra Series 4500W RMS subwoofer\u003c\/strong\u003e is available in \u003cstrong data-start=\"2235\" data-end=\"2251\"\u003edual 0.7 ohm\u003c\/strong\u003e and \u003cstrong data-start=\"2256\" data-end=\"2272\"\u003edual 1.7 ohm\u003c\/strong\u003e options, giving you flexibility when building around your amplifier and final ohm load. If you need help figuring out the right wiring setup for your build, read our \u003cstrong data-start=\"2439\" data-end=\"2473\"\u003ecar audio wiring diagram guide\u003c\/strong\u003e here:\u003cbr data-start=\"2479\" data-end=\"2482\"\u003e\u003ca data-start=\"2482\" data-end=\"2563\" 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=\"2565\" data-end=\"2741\"\u003eIf you are pairing a subwoofer like this with serious power, your electrical system matters too. Shop our \u003cstrong data-start=\"2671\" data-end=\"2685\"\u003eBig 3 Kits\u003c\/strong\u003e here:\u003cbr data-start=\"2691\" data-end=\"2694\"\u003e\u003ca data-start=\"2694\" data-end=\"2741\" 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=\"2743\" data-end=\"2945\"\u003eIf you are stepping into a larger high-output system, shop our \u003cstrong data-start=\"2806\" data-end=\"2829\"\u003eBrand X Alternators\u003c\/strong\u003e here:\u003cbr data-start=\"2835\" data-end=\"2838\"\u003e\u003ca data-start=\"2838\" data-end=\"2945\" 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=\"2947\" data-end=\"3143\"\u003eYou can also learn more about charging support for bigger systems in our \u003cstrong data-start=\"3020\" data-end=\"3051\"\u003ehigh output alternator blog\u003c\/strong\u003e here:\u003cbr data-start=\"3057\" data-end=\"3060\"\u003e\u003ca data-start=\"3060\" data-end=\"3143\" 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=\"3145\" data-end=\"3562\"\u003eThe \u003cstrong data-start=\"3149\" data-end=\"3174\"\u003eRuthless Ultra Series\u003c\/strong\u003e is built in-house from U.S.-sourced materials and 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=\"3404\" data-end=\"3431\"\u003eRuthless Audio Ultra 15\u003c\/strong\u003e and \u003cstrong data-start=\"3436\" data-end=\"3463\"\u003eRuthless Audio Ultra 18\u003c\/strong\u003e are built to handle serious power and deliver the kind of low-end performance bassheads are after.\u003c\/p\u003e\n\u003cp data-start=\"3564\" data-end=\"3785\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you are after a subwoofer that combines heavy power handling, advanced cooling, strong motor force, and real high-output potential, the \u003cstrong data-start=\"3703\" data-end=\"3744\"\u003eRuthless Audio Ultra Series subwoofer\u003c\/strong\u003e is a serious option for your next build.\u003c\/p\u003e","brand":"Ruthless Audio","offers":[{"title":"D 0.7","offer_id":44492127993996,"sku":null,"price":1399.95,"currency_code":"USD","in_stock":true},{"title":"D 1.7","offer_id":44492128026764,"sku":null,"price":1399.95,"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-copy","provider":"Audio Sellerz","version":"1.0","type":"link"}