{"product_id":"18-3000-watt-rms-dual-1-ohm-car-audio-subwoofer-sundown-audio-x-series-xv4","title":"18\" 3000 Watt RMS Dual 1 Ohm Car Audio Subwoofer Sundown Audio X-Series XV4","description":"\u003cul\u003e\n\u003cli\u003eExtreme power handling rated at 3,000 watts RMS with 6,000 watts peak for massive bass output\u003c\/li\u003e\n\u003cli\u003eHuge 18 inch cone area combined with 30mm Xmax delivers deep, authoritative low frequencies\u003c\/li\u003e\n\u003cli\u003eAdvanced Xv4 coil technology and heavy duty motor provide excellent thermal stability and durability\u003c\/li\u003e\n\u003cli\u003eOptimized for large ported enclosures with a recommended 7.0 cu ft box tuned to 32 Hz\u003c\/li\u003e\n\u003cli\u003eBuilt for aggressive daily systems and competition builds with proven Sundown Audio X-Series performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e18\" 3000 Watt RMS Dual 1 Ohm Car Audio Subwoofer Sundown Audio X-Series XV4\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThis Listing Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e(1) X-Series XV4 18\" Dual 1 Ohm Subwoofer\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\nThe Sundown Audio X-Series XV4 18\" subwoofer is built for extreme low frequency output with the control and durability serious bass systems require. Rated at 3,000 watts RMS and engineered with advanced Xv4 coil technology, this subwoofer delivers massive output while maintaining stability and clean sound under heavy load.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eWith a huge cone area and 30mm of linear Xmax, the XV4 18\" is designed to move serious air and produce deep, authoritative bass. The heavy duty motor structure and optimized cooling design help maintain consistent performance during extended high power use. Designed primarily for large ported enclosures, the XV4 18\" is ideal for aggressive daily systems and competition builds where maximum air displacement and reliability matter most.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eSubwoofer Size: 18 inch\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSeries: X-Series XV4\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Configuration: Dual 1 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRMS Power Handling: 3000 Watts\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePeak Power Handling: 6000 Watts\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eXmax: 30 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSensitivity: 86 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCone Area (Sd): 113.41 in\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Diameter: 9.25 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDisplacement: 0.28 cu ft\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eT\/S Parameters (D1 Only):\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eRe: 2.05 Ohms\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFs: 25.87 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVas: 93.67 L\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQes: 0.63\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQms: 4.13\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQts: 0.54\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBL: 19.74 NA\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMms: 737.81 g\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCms: 51.28 uM\/N\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure Recommendations:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eSealed Enclosure: Not Recommended\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePorted Enclosure Volume: 7.0 cu ft\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRecommended Port Tuning: 32 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRecommended Port Area: 112 sq in\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003e4th Order Enclosure Specs:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eSealed Side Volume: 3.0 cu ft\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePorted Side Volume: 9.0 cu ft\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePort Area: 180 sq in\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePort Length: 8 inches\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 15 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOutside Diameter: 18.42 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCutout Diameter: 16.69 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Diameter: 9.25 inches\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"Sundown Audio","offers":[{"title":"Default Title","offer_id":47730454069496,"sku":"SD-X-18-D1-V4","price":949.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/Sundown_Audio_XV4_18_3000W_RMS_Dual_1_Ohm_Car_Audio_Subwoofer_Main_image.jpg?v=1767388264","url":"https:\/\/bigjeffaudio.com\/products\/18-3000-watt-rms-dual-1-ohm-car-audio-subwoofer-sundown-audio-x-series-xv4","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}