{"title":"Down4Sound Subwoofers","description":"\u003cp\u003eShop 17+ \u003cstrong\u003eDown4Sound Subwoofers\u003c\/strong\u003e at JS Ultimate Sounds, your authorized Down4Sound dealer. From daily-driver bass to competition SPL, find the right sub for your build. All in stock with fast, free shipping and expert support — order online or call our team to build the perfect system.\u003c\/p\u003e","products":[{"product_id":"down4sound-tcx-10-subwoofer-2700w-rms","title":"Down4Sound TCX 10\" Subwoofer 2700W RMS","description":"\u003cp\u003eThe DOWN4SOUND TCX-10 D2 is engineered for builders who demand maximum output from a compact 10-inch subwoofer. Designed for high-current systems and aggressive use, this subwoofer delivers a staggering 2700W RMS while maintaining control, thermal stability, and long-term durability.\u003c\/p\u003e \u003cp\u003eBuilt around a 3-inch 8-layer flat aluminum voice coil, carbon fiber cone, and a heavy-duty 5-stack Y35 ferrite motor, the TCX-10 D2 is optimized for dual 2-ohm wiring, extreme excursion, and sustained high-power play. This is not a casual 10-inch sub — it is a compact weapon for serious systems.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e2700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 2-ohm voice coil (D2)\u003c\/li\u003e \u003cli\u003e3-inch 8-layer flat aluminum voice coil\u003c\/li\u003e \u003cli\u003eCarbon fiber cone for rigidity and low distortion\u003c\/li\u003e \u003cli\u003e33 mm one-way Xmax\u003c\/li\u003e \u003cli\u003eHeavy-duty 5-stack Y35 ferrite motor\u003c\/li\u003e \u003cli\u003eStitched high-roll surround\u003c\/li\u003e \u003cli\u003eTriple-spider suspension system\u003c\/li\u003e \u003cli\u003eFully vented motor, basket, and backplate for enhanced cooling\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResonance Frequency (Fs): 39.76 Hz\u003c\/li\u003e \u003cli\u003eQms: 4.011\u003c\/li\u003e \u003cli\u003eQes: 0.678\u003c\/li\u003e \u003cli\u003eQts: 0.582\u003c\/li\u003e \u003cli\u003eMoving Mass (Mms): 430.2 g\u003c\/li\u003e \u003cli\u003eCompliance (Cms): 37.80 µm\/N\u003c\/li\u003e \u003cli\u003eVas: 7.07 L\u003c\/li\u003e \u003cli\u003eSd: 113.41 cm²\u003c\/li\u003e \u003cli\u003eBL Product: 28.58 T·m\u003c\/li\u003e \u003cli\u003eSensitivity (SPL): 80.5 dB\u003c\/li\u003e \u003cli\u003eXmax: ~33 mm (one-way)\u003c\/li\u003e \u003cli\u003eDisplacement: 0.23 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eEngineering and Construction\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for improved linear control\u003c\/li\u003e \u003cli\u003eDual flared pole vent to reduce air turbulence\u003c\/li\u003e \u003cli\u003eFully vented motor structure for maximum thermal efficiency\u003c\/li\u003e \u003cli\u003eTriple-spider suspension for stability under extreme excursion\u003c\/li\u003e \u003cli\u003ePrecision-wound 3-inch 8-layer flat aluminum voice coil for high-current handling\u003c\/li\u003e \u003cli\u003eCarbon fiber cone minimizes flex under extreme load\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eBuilt to survive high power, long play sessions, and real-world abuse without loss of control or reliability.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003eRecommended Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePorted enclosure volume: 1.25 – 1.75 cu ft\u003c\/li\u003e \u003cli\u003eRecommended tuning frequency: 34 Hz\u003c\/li\u003e \u003cli\u003eOptimized for tight, aggressive bass in compact enclosures\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003ePhysical Dimensions (Key Installation Specs)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eCutout Diameter: 10.03 in (255 mm)\u003c\/li\u003e \u003cli\u003eOverall Diameter (Top Gasket): 11.42 in (290 mm)\u003c\/li\u003e \u003cli\u003eMounting Depth: 11.50 in (292 mm)\u003c\/li\u003e \u003cli\u003eMotor Diameter: 10.28 in (261 mm)\u003c\/li\u003e \u003cli\u003eNet Weight: 97.66 lb\u003c\/li\u003e \u003cli\u003eGross Weight: 102.5 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eWhy You Should Buy\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eTrue 2700W RMS output from a compactly massive 10-inch platform\u003c\/li\u003e \u003cli\u003eDesigned for high-current, low-impedance system builds\u003c\/li\u003e \u003cli\u003eExceptional thermal management and mechanical control\u003c\/li\u003e \u003cli\u003eCompact size with big-sub behavior\u003c\/li\u003e \u003cli\u003eMaximum output per cubic foot for serious builds\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eIdeal Applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eHigh-power daily-driven systems\u003c\/li\u003e \u003cli\u003eSPL-focused builds using multiple compact subwoofers\u003c\/li\u003e \u003cli\u003eVehicles with limited enclosure space and upgraded electrical\u003c\/li\u003e \u003cli\u003eBuilders seeking extreme output without stepping up in size\u003c\/li\u003e \u003cli\u003eSerious audio systems where normal 10s are not enough\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828343705645,"sku":"TCX10D2","price":849.99,"currency_code":"USD","in_stock":true},{"title":"D1","offer_id":66828343738413,"sku":"TCX10D1","price":849.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-tcx-10-subwoofer-2700w-rms-w_38a9338b-427f-4735-a5a3-a12dd8b1d039.jpg?v=1782676863"},{"product_id":"down4sound-tcx-18-subwoofer-2700w-rms","title":"Down4Sound TCX 18\" Subwoofer 2700W RMS","description":"\u003cp\u003e\u003cstrong\u003eThe DOWN4SOUND TCX 18” Subwoofer D2\u003c\/strong\u003e is built for extreme output, heavy power handling, and clean low-end delivery. Featuring a \u003cstrong\u003e3\" 8-layer flat aluminum voice coil\u003c\/strong\u003e, \u003cstrong\u003ecarbon fiber cone\u003c\/strong\u003e, \u003cstrong\u003estitched high-roll surround\u003c\/strong\u003e, and an oversized \u003cstrong\u003e5-stack Y35 ferrite motor\u003c\/strong\u003e, this subwoofer is engineered to dominate both daily systems and demo builds.\u003c\/p\u003e \u003cp\u003eWith a \u003cstrong\u003etriple-spider suspension\u003c\/strong\u003e, \u003cstrong\u003efully vented motor structure\u003c\/strong\u003e, and \u003cstrong\u003eextended pole piece\u003c\/strong\u003e, the TCX-18 D2 is optimized for long throw and sustained abuse. From punchy low bass to extended sweeps, it delivers consistent pressure without breaking a sweat.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e2700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 2-ohm voice coil (D2)\u003c\/li\u003e \u003cli\u003e3-inch 8-layer flat aluminum voice coil\u003c\/li\u003e \u003cli\u003eCarbon fiber cone\u003c\/li\u003e \u003cli\u003e~39 mm one-way Xmax\u003c\/li\u003e \u003cli\u003e5-stack Y35 heavy-duty motor\u003c\/li\u003e \u003cli\u003eStitched high-roll surround\u003c\/li\u003e \u003cli\u003eTriple-spider suspension\u003c\/li\u003e \u003cli\u003eDual flared pole vent, gap venting, and fully vented motor \u0026amp; backplate\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResonance Frequency (Fs): 30.207 Hz\u003c\/li\u003e \u003cli\u003eQms: 5.202\u003c\/li\u003e \u003cli\u003eQes: 0.598\u003c\/li\u003e \u003cli\u003eQts: 0.521\u003c\/li\u003e \u003cli\u003eMms (Moving Mass): 620.257 g\u003c\/li\u003e \u003cli\u003eCms (Compliance): 39.745 μm\/N\u003c\/li\u003e \u003cli\u003eVas: 24.882 L\u003c\/li\u003e \u003cli\u003eSd: 113.411 cm²\u003c\/li\u003e \u003cli\u003eBL Product: 27.216 T·m\u003c\/li\u003e \u003cli\u003eSensitivity (SPL): 83.9 dB\u003c\/li\u003e \u003cli\u003eXmax: ~39 mm (one-way)\u003c\/li\u003e \u003cli\u003eDriver Displacement: 0.31 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eEngineering and Construction\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for smooth, clean long-throw travel\u003c\/li\u003e \u003cli\u003eDual flared pole vent and gap venting for reduced turbulence\u003c\/li\u003e \u003cli\u003eFully vented backplate and motor structure for thermal control\u003c\/li\u003e \u003cli\u003ePrecision-wound \u003cstrong\u003e3″ 8-layer flat aluminum voice coil (bifilar)\u003c\/strong\u003e on a \u003cstrong\u003e0.3 mm anodized aluminum former\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eCarbon fiber cone for rigidity, fast response, and reduced flex\u003c\/li\u003e \u003cli\u003eBuilt to survive high power, long sessions, and real-world abuse\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eRecommended Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePorted: 5.5 – 6.5 cu ft\u003c\/li\u003e \u003cli\u003eRecommended Tuning: 30 Hz\u003c\/li\u003e \u003cli\u003eOptimized for deep, high-output low-frequency performance\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003ePhysical Dimensions (Key Installation Specs)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMounting Cutout Diameter (Through Cut): 16.54 in (420 mm)\u003c\/li\u003e \u003cli\u003eOverall Cutout Diameter (Flush-Mount Recess): 18.35 in (466 mm)\u003c\/li\u003e \u003cli\u003eMounting Depth: 14.25 in (361.95 mm)\u003c\/li\u003e \u003cli\u003eMotor Diameter: 9.45 in (240 mm)\u003c\/li\u003e \u003cli\u003eNet Weight: 104.72 lb\u003c\/li\u003e \u003cli\u003eGross Weight: 116 lb\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828343771181,"sku":"TCX18D2","price":999.99,"currency_code":"USD","in_stock":true},{"title":"D1","offer_id":66828343803949,"sku":"TCX18D1","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-tcx-18-subwoofer-2700w-rms-w_319ec959-ef7c-4e28-b059-8fb7cb039cab.jpg?v=1782676876"},{"product_id":"down4sound-tcx-15-subwoofer-2700w-rms","title":"Down4Sound TCX 15\" Subwoofer 2700W RMS","description":"\u003cp\u003e\u003cstrong\u003eThe DOWN4SOUND TCX 15” Subwoofer D2\u003c\/strong\u003e is engineered for high-performance bass with long-lasting durability. Whether you’re building a street banger or a full demo wall, the TCX-15 D2 delivers aggressive output with clean, deep low-frequency response.\u003c\/p\u003e \u003cp\u003eWith a true \u003cstrong\u003e2700W RMS\u003c\/strong\u003e rating, a \u003cstrong\u003e3-inch 8-layer flat aluminum voice coil\u003c\/strong\u003e, \u003cstrong\u003ecarbon fiber cone\u003c\/strong\u003e, and a massive \u003cstrong\u003e5-stack Y35 ferrite motor\u003c\/strong\u003e, this subwoofer delivers the perfect balance of power, control, and precision. A vented backplate, rear gap venting, and dual flared pole vents keep the coil running cool even during sustained high-power use.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e2700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 2-ohm voice coil (D2)\u003c\/li\u003e \u003cli\u003e3-inch 8-layer flat aluminum voice coil\u003c\/li\u003e \u003cli\u003eCarbon fiber cone\u003c\/li\u003e \u003cli\u003e~39 mm one-way Xmax\u003c\/li\u003e \u003cli\u003e5-stack Y35 heavy-duty motor\u003c\/li\u003e \u003cli\u003eStitched high-roll surround\u003c\/li\u003e \u003cli\u003eTriple-spider suspension\u003c\/li\u003e \u003cli\u003eRear gap and fully vented motor \u0026amp; backplate for cooling\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResonance Frequency (Fs): 28.9 Hz\u003c\/li\u003e \u003cli\u003eQms (Mechanical Q): 4.91\u003c\/li\u003e \u003cli\u003eQes (Electrical Q): 0.50\u003c\/li\u003e \u003cli\u003eQts (Total Q): 0.46\u003c\/li\u003e \u003cli\u003eTotal Moving Mass (Mms): ~608.7 g\u003c\/li\u003e \u003cli\u003eSuspension Compliance (Cms): ~49.8 μm\/N\u003c\/li\u003e \u003cli\u003eEquivalent Volume (Vas): ~37.7 L\u003c\/li\u003e \u003cli\u003eSensitivity (SPL): 84.3 dB @ 1W \/ 90.5 dB @ 2.83V\u003c\/li\u003e \u003cli\u003eXmax: ~39 mm (one-way)\u003c\/li\u003e \u003cli\u003eDriver Displacement: ~0.22 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eEngineering and Construction\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for clean, linear throw\u003c\/li\u003e \u003cli\u003eDual flared pole vents for reduced turbulence\u003c\/li\u003e \u003cli\u003eRear gap and motor venting for improved thermal regulation\u003c\/li\u003e \u003cli\u003ePrecision-wound 3″ 8-layer flat aluminum voice coil (bifilar) on a 0.3 mm anodized aluminum former\u003c\/li\u003e \u003cli\u003eCarbon fiber cone for rigidity and reduced flex\u003c\/li\u003e \u003cli\u003eBuilt to survive high power, long sessions, and real-world abuse\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eRecommended Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePorted: 3.25 – 4.0 cu ft\u003c\/li\u003e \u003cli\u003eRecommended Tuning: 30–32 Hz\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eOptimized for deep, aggressive low-frequency output\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003ePhysical Dimensions (Key Installation Specs)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMounting Cutout Diameter (Through Cut): 14.25 in (361.95 mm)\u003c\/li\u003e \u003cli\u003eOverall Cutout Diameter (Flush-Mount Recess): 15.39 in (391 mm)\u003c\/li\u003e \u003cli\u003eMounting Depth: 13.50 in (342.9 mm)\u003c\/li\u003e \u003cli\u003eMotor Diameter: 9.45 in (240 mm)\u003c\/li\u003e \u003cli\u003eNet Weight: 101.41 lb\u003c\/li\u003e \u003cli\u003eGross Weight: 109.35 lb\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828343836717,"sku":"TCX15D2","price":949.99,"currency_code":"USD","in_stock":true},{"title":"D1","offer_id":66828343869485,"sku":"TCX15D1","price":949.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-tcx-15-subwoofer-2700w-rms-w_3203e8cf-d927-4d64-a9a4-e2c41a82695e.jpg?v=1782676872"},{"product_id":"down4sound-tcx-12-subwoofer-2700w-rms","title":"Down4Sound TCX 12\" Subwoofer 2700W RMS","description":"\u003cp\u003e\u003cstrong\u003eThe DOWN4SOUND TCX 12” Subwoofer D1\u003c\/strong\u003e is precision-engineered for aggressive output and long-term durability. Featuring a \u003cstrong\u003e3\" 8-layer flat aluminum voice coil\u003c\/strong\u003e, carbon fiber cone, stitched surround, and a massive \u003cstrong\u003e5-stack Y35 ferrite motor\u003c\/strong\u003e, it delivers raw output with total control.\u003c\/p\u003e \u003cp\u003eThis sub is thermally optimized through full venting on the motor, backplate, and pole piece — allowing you to push full power without losing performance.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e2700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 1-ohm voice coil (D1)\u003c\/li\u003e \u003cli\u003e3-inch 8-layer flat aluminum voice coil\u003c\/li\u003e \u003cli\u003eCarbon fiber cone\u003c\/li\u003e \u003cli\u003e~39 mm one-way Xmax\u003c\/li\u003e \u003cli\u003e5-stack Y35 heavy-duty motor\u003c\/li\u003e \u003cli\u003eStitched high-roll surround\u003c\/li\u003e \u003cli\u003eTriple-spider suspension\u003c\/li\u003e \u003cli\u003eFully vented motor \u0026amp; backplate for cooling\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResonance Frequency (Fs): 36.451 Hz\u003c\/li\u003e \u003cli\u003eQms: 3.949\u003c\/li\u003e \u003cli\u003eQes: 0.458\u003c\/li\u003e \u003cli\u003eQts: 0.396\u003c\/li\u003e \u003cli\u003eMms (Moving Mass): 507.996 g\u003c\/li\u003e \u003cli\u003eCms (Compliance): 41.047 μm\/N\u003c\/li\u003e \u003cli\u003eVas: 9.179 L\u003c\/li\u003e \u003cli\u003eSd: 113.411 cm²\u003c\/li\u003e \u003cli\u003eBL Product: 20.200 T·m\u003c\/li\u003e \u003cli\u003eSensitivity (SPL): 83.5 dB\u003c\/li\u003e \u003cli\u003eXmax: ~39 mm (one-way)\u003c\/li\u003e \u003cli\u003eDisplacement: 0.25 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eEngineering and Construction\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for linear throw\u003c\/li\u003e \u003cli\u003eDual flared pole vent for smooth coil cooling\u003c\/li\u003e \u003cli\u003eFully vented motor and backplate\u003c\/li\u003e \u003cli\u003ePrecision-wound 3″ 8-layer flat aluminum voice coil (bifilar) on a 0.3 mm anodized aluminum former\u003c\/li\u003e \u003cli\u003eCarbon fiber cone for rigidity and reduced flex\u003c\/li\u003e \u003cli\u003eBuilt to survive high power, long sessions, and real-world abuse\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eRecommended Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePorted: 2.0 – 2.5 cu ft\u003c\/li\u003e \u003cli\u003eRecommended Tuning: 32 Hz\u003c\/li\u003e \u003cli\u003eOptimized for deep, aggressive bass with strong control and efficiency\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003ePhysical Dimensions (Key Installation Specs)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMounting Cutout Diameter (Through Cut): 10.83 in (275 mm)\u003c\/li\u003e \u003cli\u003eOverall Cutout Diameter (Flush-Mount Recess): 12.32 in (313 mm)\u003c\/li\u003e \u003cli\u003eMounting Depth: 12.25 in (311.15 mm)\u003c\/li\u003e \u003cli\u003eMotor Diameter: 9.45 in (240 mm)\u003c\/li\u003e \u003cli\u003eNet Weight: 98.77 lb\u003c\/li\u003e \u003cli\u003eGross Weight: 104.3 lb\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D1","offer_id":66828344229933,"sku":"TCX12D1","price":899.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828344262701,"sku":"TCX12D2","price":899.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-tcx-12-subwoofer-2700w-rms-w_46a6fae4-341d-4ed5-b74f-1808bcf021e9.jpg?v=1782676868"},{"product_id":"down4sound-sb-10-subwoofer-500w-rms","title":"Down4Sound SB 10\" Subwoofer 500W RMS","description":"\u003cp\u003eElevate your car audio system with the DOWN4SOUND SB-10 Subwoofer, designed to bring precise, deep bass and exceptional clarity to your setup. With a dual 2-ohm voice coil configuration and 500W RMS power handling, this subwoofer delivers a perfect balance of performance and durability in a compact footprint. Engineered with a highly optimized suspension and robust motor system, the SB-10 D2 provides clean, accurate, and impactful bass for daily use or high-performance builds.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e500W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 2-ohm voice coil configuration\u003c\/li\u003e \u003cli\u003e2.5-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e21 mm one-way Xmax\u003c\/li\u003e \u003cli\u003eHighly optimized suspension\u003c\/li\u003e \u003cli\u003eCompact, high-output design\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e4.030 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e37.717 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e3.510\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.486\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.427\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e158.478 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e158.882 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003e0.740\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e25.653 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 333.654 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e16.190 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e84.1 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e21 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.09 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eOptimized suspension for accurate sound reproduction\u003c\/li\u003e \u003cli\u003eVented motor for improved cooling\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.5-inch voice coil\u003c\/li\u003e \u003cli\u003eDurable cone and surround assembly for long-term reliability\u003c\/li\u003e \u003cli\u003eCompact motor structure optimized for output and control\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosures\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003ePorted\u003c\/h2\u003e1.0 cu ft (net)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003ePort Area\u003c\/h2\u003e15 sq in\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eTuning\u003c\/h2\u003e35 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSealed\u003c\/h2\u003eNot recommended\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e9.02 in (229 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e10.28 in (261 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e6.46 in (164 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Height\u003c\/h2\u003e3.54 in (90 mm)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNet Weight: \u003c\/strong\u003e21.9 lbs\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e 25.2 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy You Should Buy\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eStrong 500W RMS performance\u003c\/li\u003e \u003cli\u003eAccurate and controlled bass reproduction\u003c\/li\u003e \u003cli\u003eDual 2-ohm coils for flexible wiring\u003c\/li\u003e \u003cli\u003eDurable construction for long-term reliability\u003c\/li\u003e \u003cli\u003eCompact size ideal for space-limited installs\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily-driven systems needing clean, solid low end\u003c\/li\u003e \u003cli\u003ePorted enclosures offering strong output and accuracy\u003c\/li\u003e \u003cli\u003eSmall-to-mid-size vehicle installs\u003c\/li\u003e \u003cli\u003eUsers seeking dependable performance without sacrificing space\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828361826349,"sku":"SB10D2","price":134.99,"currency_code":"USD","in_stock":true},{"title":"D4","offer_id":66828361859117,"sku":"SB10D4","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-sb-10-subwoofer-500w-rms-w_80a6f4b2-85ac-42b8-8d16-e99841cff46a.jpg?v=1782676811"},{"product_id":"down4sound-sb-15-subwoofer-500w-rms","title":"Down4Sound SB 15\" Subwoofer 500W RMS","description":"\u003cp\u003eElevate your car audio system with the DOWN4SOUND SB-15 Subwoofer, crafted to deliver deep, precise bass and exceptional clarity. Designed with a dual 2-ohm voice coil configuration and 500W RMS power handling, this subwoofer is built for high-performance setups that demand durability and top-tier sound quality. Its optimized suspension and robust motor structure ensure strong, accurate low-frequency output for daily or demo-focused builds.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e500W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 2-ohm voice coil configuration\u003c\/li\u003e \u003cli\u003e2.5-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e21 mm one-way Xmax\u003c\/li\u003e \u003cli\u003eHighly optimized suspension\u003c\/li\u003e \u003cli\u003eDesigned for high-performance systems\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e2.03 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e30.87 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e4.132\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.825\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.689\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e271.1 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e83.11 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003eNot specified\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e91.18 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 855.29 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e16.42 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e87.0 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e21 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.19 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eOptimized suspension for accurate low-frequency reproduction\u003c\/li\u003e \u003cli\u003eVented motor for improved cooling\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.5-inch voice coil\u003c\/li\u003e \u003cli\u003eDurable cone and surround assembly\u003c\/li\u003e \u003cli\u003eRobust motor designed for consistent high-output performance\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosures\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003ePorted\u003c\/h2\u003e3.0 cu ft (net)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003ePort Area\u003c\/h2\u003e44 sq in\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003ePort Tuning\u003c\/h2\u003e35 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSealed\u003c\/h2\u003eNot recommended\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e13.62 in (346 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e15.51 in (394 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e8.01 in (203.5 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Height\u003c\/h2\u003e3.54 in (90 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e23.3 lb\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e 25.5 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy You Should Buy\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePowerful low-end performance\u003c\/li\u003e \u003cli\u003eDual 2-ohm wiring flexibility\u003c\/li\u003e \u003cli\u003eDurable, long-lasting construction\u003c\/li\u003e \u003cli\u003eDesigned for precise, impactful bass reproduction\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828362055725,"sku":"SB15D2","price":189.99,"currency_code":"USD","in_stock":true},{"title":"D4","offer_id":66828362088493,"sku":"SB15D4","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-sb-15-subwoofer-500w-rms-w_05c5445f-a93e-4e9f-8eb7-4ec7f09354ab.jpg?v=1782676819"},{"product_id":"down4sound-sb-12-subwoofer-500w-rms","title":"Down4Sound SB 12\" Subwoofer 500W RMS","description":"\u003cp\u003eExperience the perfect blend of power and precision with the DOWN4SOUND SB-12 Subwoofer, designed for enthusiasts who crave deep, clean bass. Featuring a dual 2-ohm voice coil configuration and 500W RMS power handling, this subwoofer is optimized for versatile setups and delivers consistent, reliable low-frequency performance. Its durable construction ensures long-lasting use in any car audio system.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e500W RMS power handling\u003c\/li\u003e\n\u003cli\u003eDual 2-ohm voice coil design\u003c\/li\u003e\n\u003cli\u003e2.5-inch high-temperature voice coil\u003c\/li\u003e\n\u003cli\u003e21 mm one-way Xmax\u003c\/li\u003e\n\u003cli\u003eHighly optimized suspension system\u003c\/li\u003e\n\u003cli\u003eVersatile design for a wide range of installs\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e4.030 ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e29.296 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e3.622\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.550\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.478\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e235.540 g\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e125.928 μm\/N\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003e0.768\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e46.407 L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 510.071 cm²\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e17.824 T·m\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e85.1 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e21 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.15 cu ft\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOptimized suspension for controlled, accurate bass\u003c\/li\u003e\n\u003cli\u003eVented motor for improved thermal performance\u003c\/li\u003e\n\u003cli\u003ePrecision-wound 2.5-inch voice coil\u003c\/li\u003e\n\u003cli\u003eDurable cone and surround assembly\u003c\/li\u003e\n\u003cli\u003eCompact, efficient motor structure\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Enclosures\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003ePorted\u003c\/h2\u003e1.75 cu ft (net)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003ePort Area\u003c\/h2\u003e26 sq in\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003ePort Tuning\u003c\/h2\u003e35 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eSealed\u003c\/h2\u003eNot recommended\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e10.87 in (276 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e12.44 in (316 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e6.81 in (173 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eMotor Height\u003c\/h2\u003e3.54 in (90 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e22.05 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e 26.4 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eWhy You Should Buy\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStrong, clean bass performance\u003c\/li\u003e\n\u003cli\u003eDurable construction built for daily use\u003c\/li\u003e\n\u003cli\u003eFlexible dual 2-ohm wiring options\u003c\/li\u003e\n\u003cli\u003eAccurate, reliable low-frequency reproduction\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003ePorted enclosures for deep, clean bass\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSUVs, sedans, trucks, and hatchbacks\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSpace-efficient high-performance builds\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eUsers seeking dependable, accurate low-frequency output\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828362285101,"sku":"SB12D2","price":149.99,"currency_code":"USD","in_stock":true},{"title":"D4","offer_id":66828362317869,"sku":"SB12D4","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-sb-12-subwoofer-500w-rms-w_0b5be55e-f10a-4eb9-b68a-e08e88fabd1f.jpg?v=1782676814"},{"product_id":"down4sound-sb-8-subwoofer-500w-rms","title":"Down4Sound SB 8\" Subwoofer 500W RMS","description":"\u003cp\u003eUnleash the power of precise bass performance with the DOWN4SOUND SB-8 Subwoofer, crafted for car audio enthusiasts who value clean, impactful sound in a compact footprint. Featuring a dual 2-ohm voice coil configuration and true 500W RMS power handling, this 8-inch subwoofer is optimized for versatile installs, tight spaces, and high-performance daily systems. Engineered with a refined suspension and durable motor structure, the SB-8 D2 delivers reliable, accurate, and punchy bass.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e500W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 2-ohm voice coil configuration\u003c\/li\u003e \u003cli\u003e2.5-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e21 mm one-way Xmax\u003c\/li\u003e \u003cli\u003eHighly optimized suspension\u003c\/li\u003e \u003cli\u003eCompact design ideal for tight installations\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e3.800 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e37.054 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e3.098\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.582\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.490\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e125.0 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e139.651 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003eNot specified\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e9.016 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 210.106 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e14.171 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e80.3 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e21 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.07 cu ft\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e4.98 inches\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eOptimized suspension for accurate sound reproduction\u003c\/li\u003e \u003cli\u003eVented motor for cooling efficiency\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.5-inch voice coil\u003c\/li\u003e \u003cli\u003eDurable cone and surround assembly\u003c\/li\u003e \u003cli\u003eCompact motor optimized for tight-space performance\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D2","offer_id":66828362448941,"sku":"SB8D2","price":114.99,"currency_code":"USD","in_stock":true},{"title":"D4","offer_id":66828362481709,"sku":"SB8D4","price":114.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-sb-8-subwoofer-500w-rms-w_f7d0b7f0-0ad7-46e1-93e8-298cf8c6d298.jpg?v=1782676823"},{"product_id":"down4sound-dvx-18-subwoofer-1700w-rms","title":"Down4Sound DVX 18\" Subwoofer 1700W RMS","description":"\u003cp\u003eThe DOWN4SOUND DVX-18 D4 is engineered for listeners who demand authoritative, precise, and durable low-frequency performance. Built with a massive high-strength motor, extended mechanical throw, and a real premium carbon fiber dustcap, the DVX-18 delivers exceptional output and accuracy suitable for daily driving, demonstration builds, and high-power systems.\u003c\/p\u003e \u003cp\u003eThis model provides a true 1700W RMS power rating and a dual 4-ohm voice coil configuration for flexible amplifier matching and wiring options. Every component is designed for efficiency, cooling, and long-term reliability under significant sound pressure levels.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e3-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e33 mm one-way Xmax for extended linear travel\u003c\/li\u003e \u003cli\u003eFull carbon fiber dustcap for strength and rigidity\u003c\/li\u003e \u003cli\u003eAdvanced venting throughout the motor structure for improved cooling\u003c\/li\u003e \u003cli\u003e68-lb heavy-duty construction designed for extreme output applications\u003c\/li\u003e \u003cli\u003e8.66-inch (220 mm) motor diameter\u003c\/li\u003e \u003cli\u003eHighly extended pole piece for increased linear throw\u003c\/li\u003e \u003cli\u003ePole vent flared on both ends for superior airflow and low noise\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e28.036 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e3.012\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.659\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.541\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e492.526 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e56.483 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms (Mechanical Resistance)\u003c\/h2\u003e0.803\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e119.508 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 113.411 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e28.212 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e87.9 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e33 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.23 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for improved linear performance and mechanical control\u003c\/li\u003e \u003cli\u003eDual-flared pole venting for low-noise airflow and efficient heat removal\u003c\/li\u003e \u003cli\u003eRear gap ventilation for reduced voice coil temperatures during sustained playback\u003c\/li\u003e \u003cli\u003e8.66-inch (220 mm) motor diameter for substantial magnetic strength\u003c\/li\u003e \u003cli\u003eLong-fiber spider system for reliable, consistent suspension behavior\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap for reduced moving mass and enhanced rigidity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosure\u003c\/strong\u003e\u003c\/h2\u003e \u003ch2\u003ePorted Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eVolume\u003c\/h2\u003e7 cubic feet (net)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eTuning Frequency\u003c\/h2\u003e28–32 Hz\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis alignment provides deep low-frequency extension, high output, and low distortion suitable for daily music listening and large-cabin high-power builds.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e17.00 in (431.8 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e11.81 in (300 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e18.49 in (469 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e8.66 in (220 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eWeight\u003c\/h2\u003e68 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy Choose the DVX-18 D4\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtreme output capability with accurate, controlled low-frequency reproduction\u003c\/li\u003e \u003cli\u003eDurable construction optimized for long-term performance in demanding systems\u003c\/li\u003e \u003cli\u003eFlexible wiring thanks to the dual 4-ohm voice coils\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap adds both structural strength and a premium appearance\u003c\/li\u003e \u003cli\u003eDesigned for users who require deep, powerful bass without sacrificing clarity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eLarge-cabin daily music systems\u003c\/li\u003e \u003cli\u003eHigh-power demo builds\u003c\/li\u003e \u003cli\u003eTrunk, wall, or 4th\/6th-order enclosures\u003c\/li\u003e \u003cli\u003eSQL (Sound Quality Loud) and SPL-leaning setups\u003c\/li\u003e \u003cli\u003eUsers seeking strong low-end response in the 25–45 Hz range\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828367986733,"sku":"DVX18D4","price":549.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828368019501,"sku":"DVX18D2","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dvx-18-subwoofer-1700w-rms-w_26ab4b84-c0b3-4eca-a0cb-b159796da6c6.jpg?v=1782676225"},{"product_id":"down4sound-dvx-15-subwoofer-1700w-rms","title":"Down4Sound DVX 15\" Subwoofer 1700W RMS","description":"\u003cp\u003eThe DOWN4SOUND DVX-15 D4 is engineered for listeners who demand authoritative, precise, and durable low-frequency performance. Built with a high-strength motor, extended mechanical throw, and a real carbon fiber dustcap, the DVX-15 delivers exceptional output and accuracy suitable for daily driving, demonstration builds, and high-power systems.\u003c\/p\u003e \u003cp\u003eThis model provides a true 1700W RMS power rating and a dual 4-ohm voice coil configuration for flexible amplifier matching and wiring options. Every component is designed for efficiency, cooling, and long-term reliability under significant sound pressure levels.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e3-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e33 mm one-way Xmax for extended linear travel\u003c\/li\u003e \u003cli\u003eFull carbon fiber dustcap for strength and rigidity\u003c\/li\u003e \u003cli\u003eAdvanced venting throughout the motor structure for improved cooling\u003c\/li\u003e \u003cli\u003e65-lb heavy-duty construction designed for high output applications\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e30.413 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e2.732\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.534\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.447\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e387.231 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e70.720 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms (Mechanical Resistance)\u003c\/h2\u003e0.803\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e53.606 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 73.062 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e28.948 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e86.4 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e33 mm \u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.20 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for improved linear performance and mechanical control\u003c\/li\u003e \u003cli\u003eDual-flared pole venting for low noise airflow and efficient heat removal\u003c\/li\u003e \u003cli\u003eRear gap ventilation for reduced voice coil temperatures during sustained playback\u003c\/li\u003e \u003cli\u003e8.66-inch (220 mm) motor diameter for substantial magnetic strength\u003c\/li\u003e \u003cli\u003eLong-fiber spider system for reliable, consistent suspension behavior\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap for reduced moving mass and enhanced cone rigidity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosure\u003c\/strong\u003e\u003c\/h2\u003e \u003ch2\u003ePorted Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eVolume\u003c\/h2\u003e4.5 cubic feet (net)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eTuning Frequency\u003c\/h2\u003e32 Hz\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis alignment provides strong low-frequency extension, balanced output, and low distortion suitable for daily music listening and high-output builds.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e14.17 in (360 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e10.63 in (270 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e15.59 in (396 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eWeight\u003c\/h2\u003e65 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy Choose the DVX-15 D4\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eHigh output capability with accurate, controlled low-frequency reproduction\u003c\/li\u003e \u003cli\u003eDurable design optimized for long-term performance in demanding systems\u003c\/li\u003e \u003cli\u003eFlexible wiring thanks to the dual 4-ohm voice coils\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap adds both strength and professional appearance\u003c\/li\u003e \u003cli\u003eDesigned for users who require deep, powerful bass without sacrificing clarity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily music systems\u003c\/li\u003e \u003cli\u003eHigh-power demo builds\u003c\/li\u003e \u003cli\u003eTrunk or wall installations\u003c\/li\u003e \u003cli\u003eSQL (Sound Quality Loud) and SPL-leaning setups\u003c\/li\u003e \u003cli\u003eUsers seeking strong low-end response\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828368117805,"sku":"DVX15D4","price":489.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828368150573,"sku":"DVX15D2","price":489.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dvx-15-subwoofer-1700w-rms-w_56ddb9f4-890d-4a3b-b1ae-61edf8be132a.jpg?v=1782676220"},{"product_id":"down4sound-dvx-12-subwoofer-1700w-rms","title":"Down4Sound DVX 12\" Subwoofer 1700W RMS","description":"\u003cp\u003eThe DOWN4SOUND DVX-12 D4 is engineered for listeners who demand authoritative, precise, and durable low-frequency performance. Built with a high-strength motor, extended mechanical throw, and a real carbon fiber dustcap, the DVX-12 delivers exceptional output and accuracy suitable for daily driving, demonstration builds, and high-power systems.\u003c\/p\u003e \u003cp\u003eThis model provides a true 1700W RMS power rating and a dual 4-ohm voice coil configuration for flexible amplifier matching and wiring options. Every component is designed for efficiency, cooling, and long-term reliability under significant sound pressure levels.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e3-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e33 mm one-way Xmax for extended linear travel\u003c\/li\u003e \u003cli\u003eFull carbon fiber dustcap for strength and rigidity\u003c\/li\u003e \u003cli\u003eAdvanced venting throughout the motor structure for improved cooling\u003c\/li\u003e \u003cli\u003e60-lb heavy-duty construction designed for high output applications\u003c\/li\u003e \u003cli\u003e8.66-inch (220 mm) motor diameter\u003c\/li\u003e \u003cli\u003eHighly extended pole piece for increased linear throw and durability\u003c\/li\u003e \u003cli\u003ePole vent flared on both ends for superior airflow and low noise\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e38.950 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e3.083\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.600\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.503\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e330.308 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e50.549 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e138.504 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 43.374 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e28.541 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e83.1 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e33 mm (one-way, mechanical)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.15 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for improved linear performance and mechanical control\u003c\/li\u003e \u003cli\u003eDual-flared pole venting for low-noise airflow and efficient heat removal\u003c\/li\u003e \u003cli\u003eRear gap ventilation for reduced voice coil temperatures during sustained playback\u003c\/li\u003e \u003cli\u003e8.66-inch (220 mm) motor diameter for substantial magnetic strength\u003c\/li\u003e \u003cli\u003eLong-fiber spider system for reliable, consistent suspension behavior\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap for reduced moving mass and enhanced cone rigidity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosure\u003c\/strong\u003e\u003c\/h2\u003e \u003ch2\u003ePorted Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eVolume\u003c\/h2\u003e2.5 cubic feet (net)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eTuning Frequency\u003c\/h2\u003e32 Hz\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis alignment provides strong low-frequency extension, balanced output, and low distortion suitable for daily music listening and high-output builds.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e11.14 in (283 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e9.37 in (238 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e12.44 in (316 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e8.66 in (220 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eWeight\u003c\/h2\u003e60 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy Choose the DVX-12 D4\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eHigh output capability with accurate, controlled low-frequency reproduction\u003c\/li\u003e \u003cli\u003eDurable design optimized for long-term performance in demanding systems\u003c\/li\u003e \u003cli\u003eFlexible wiring thanks to the dual 4-ohm voice coils\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap adds both strength and professional appearance\u003c\/li\u003e \u003cli\u003eDesigned for users who require deep, powerful bass without sacrificing clarity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily music systems\u003c\/li\u003e \u003cli\u003eHigh-power demo builds\u003c\/li\u003e \u003cli\u003eTrunk or SUV installations\u003c\/li\u003e \u003cli\u003eSQL (Sound Quality Loud) and SPL-leaning setups\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828368248877,"sku":"DVX12D4","price":449.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828368281645,"sku":"DVX12D2","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dvx-12-subwoofer-1700w-rms-w_8cfb0d86-1c6b-4e5e-b22f-c8fe1e38a9cc.jpg?v=1782676216"},{"product_id":"down4sound-dbz-18-subwoofer-1300w-rms","title":"Down4Sound DBZ 18\" Subwoofer 1300W RMS","description":"\u003cp\u003eThe DOWN4SOUND DBz-18 D4 is engineered for listeners who want massive bass output, rugged construction, and unbeatable value. With a true 1300W RMS rating, this 18-inch subwoofer delivers deep, aggressive low-frequency performance suited for daily-driven systems and high-output builds. Featuring a dual 4-ohm voice coil configuration and a real carbon fiber dustcap, the DBz-18 D4 offers wiring flexibility, long-term durability, and powerful bass response.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1300W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e2.75-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e30 mm of Xmax\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap\u003c\/li\u003e \u003cli\u003eAdvanced motor venting\u003c\/li\u003e \u003cli\u003eHeavy-duty motor structure\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e30.810 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e2.745\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.620\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.506\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e481.756 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e48.844 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003e0.780\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e101.023 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 120.887 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e31.152 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e89.5 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e30 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.21 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece\u003c\/li\u003e \u003cli\u003eRear gap and pole venting\u003c\/li\u003e \u003cli\u003eLong-fiber spider system\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.75-inch coil\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosure\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eSealed\u003c\/h2\u003e3.5 cubic feet\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003ePorted\u003c\/h2\u003e4.5 cubic feet\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Tuning\u003c\/h2\u003e32 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Port Area\u003c\/h2\u003e54 to 68 square inches total\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e16.81 in (427 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e9.96 in (253 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e18.47 in (469 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e16.61 in (422 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e34.2 lb\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e38.5 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy You Should Buy\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDeep, powerful low-frequency performance\u003c\/li\u003e \u003cli\u003eTrue 1300W RMS output\u003c\/li\u003e \u003cli\u003eFlexible wiring\u003c\/li\u003e \u003cli\u003eDurable construction\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily-driven deep-bass systems\u003c\/li\u003e \u003cli\u003ePorted or sealed enclosures in SUVs, trucks, hatchbacks, and sedans\u003c\/li\u003e \u003cli\u003eSystems tuned in 28–35 Hz range\u003c\/li\u003e \u003cli\u003eSQL-style daily builds\u003c\/li\u003e \u003cli\u003eUsers seeking high output at an affordable price\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828369395757,"sku":"DBz18D4","price":349.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828369428525,"sku":"DBz18D2","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dbz-18-subwoofer-1300w-rms-w_0110616f-1760-4918-ad76-70837b1a2bcc.jpg?v=1782676194"},{"product_id":"down4sound-dbz-15-subwoofer-1300w-rms","title":"Down4Sound DBZ 15\" Subwoofer 1300W RMS","description":"\u003cp\u003eThe DOWN4SOUND DBz-15 D4 is built for listeners who want massive bass output, rugged construction, and unbeatable value. With a true 1300W RMS rating, this 15-inch subwoofer is designed to deliver aggressive low-frequency performance in daily-driven systems and high-output builds. Featuring a dual 4-ohm voice coil configuration and a real carbon fiber dustcap, the DBz-15 D4 offers strong durability, versatile wiring options, and powerful bass response.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1300W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e2.75-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e30 mm Xmax\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap\u003c\/li\u003e \u003cli\u003eAdvanced motor venting for improved cooling\u003c\/li\u003e \u003cli\u003eHeavy-duty motor structure\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e39.561 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e2.826\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.714\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.570\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e435.722 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e37.445 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003e0.774\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e40.977 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 88.141 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e30.322 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e87.4 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e30 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.19 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for linear excursion\u003c\/li\u003e \u003cli\u003eRear gap and pole venting for improved airflow and cooling\u003c\/li\u003e \u003cli\u003eLong-fiber spider system for suspension control\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.75-inch coil for high thermal capacity\u003c\/li\u003e \u003cli\u003ePremium carbon fiber dustcap for added rigidity\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosure\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eSealed\u003c\/h2\u003e2.0 cubic feet\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003ePorted\u003c\/h2\u003e3.0 cubic feet\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Tuning\u003c\/h2\u003e32 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Port Area\u003c\/h2\u003e36 to 45 square inches total\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e13.86 in (352 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e8.43 in (214 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e15.59 in (396 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e13.74 in (349 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e34 lb\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e37.9 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy You Should Buy\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eStrong 1300W RMS performance\u003c\/li\u003e \u003cli\u003eDeep, powerful low-frequency output\u003c\/li\u003e \u003cli\u003eDual 4-ohm coils for flexible wiring\u003c\/li\u003e \u003cli\u003eDurable construction capable of handling high SPL\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap for strength and visual appeal\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily-driven systems needing deep, powerful bass\u003c\/li\u003e \u003cli\u003ePorted or sealed enclosures in SUVs, sedans, hatchbacks, and trucks\u003c\/li\u003e \u003cli\u003eSystems tuned in the 28–35 Hz range for fuller low-end performance\u003c\/li\u003e \u003cli\u003eSQL-style daily setups requiring both punch and depth\u003c\/li\u003e \u003cli\u003eUsers seeking high-value performance without sacrificing output\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828369854509,"sku":"DBz15D4","price":299.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828369887277,"sku":"DBz15D2","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dbz-15-subwoofer-1300w-rms-w_7245eb2a-548a-4c4a-b61b-4a5e3376a1f8.jpg?v=1782676190"},{"product_id":"down4sound-dbz-12-subwoofer-1300w-rms","title":"Down4Sound DBZ 12\" Subwoofer 1300W RMS","description":"\u003cp\u003eThe DOWN4SOUND DBz-12 D4 is engineered for car audio enthusiasts who want big bass, rugged durability, and outstanding value. Delivering a true 1300W RMS, this 12-inch subwoofer provides aggressive, punchy low-frequency output suited for daily-driven systems and high-demand builds. Featuring a dual 4-ohm voice coil configuration and a real carbon fiber dustcap, the DBz-12 D4 offers flexible wiring options, premium styling, and long-lasting performance.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1300W RMS power handling\u003c\/li\u003e\n\u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e\n\u003cli\u003e2.75-inch high-temperature voice coil\u003c\/li\u003e\n\u003cli\u003e28 mm one-way Xmax\u003c\/li\u003e\n\u003cli\u003eReal carbon fiber dustcap\u003c\/li\u003e\n\u003cli\u003eAdvanced motor venting for improved cooling\u003c\/li\u003e\n\u003cli\u003eHeavy-duty motor structure\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e39.707 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e2.433\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.559\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.454\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e349.676 g\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e45.946 μm\/N\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003e0.779\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e18.391 L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 59.093 cm²\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e30.757 T·m\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e85.0 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e28 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.15 cu ft\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExtended pole piece for improved linear travel\u003c\/li\u003e\n\u003cli\u003eRear gap and pole venting for coil cooling\u003c\/li\u003e\n\u003cli\u003eLong-fiber spider system for stable suspension control\u003c\/li\u003e\n\u003cli\u003ePrecision-wound 2.75-inch voice coil\u003c\/li\u003e\n\u003cli\u003ePremium carbon fiber dustcap for enhanced rigidity\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Enclosure\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003eSealed\u003c\/h2\u003e1.0 cubic foot\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003ePorted\u003c\/h2\u003e1.75 cubic feet\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eRecommended Tuning\u003c\/h2\u003e32 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eRecommended Port Area\u003c\/h2\u003e21 to 26 square inches total\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e11.26 in (286 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e7.68 in (195 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e12.44 in (316 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e11.14 in (283 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e32.8 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e36.4 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eWhy You Should Buy\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStrong 1300W RMS performance\u003c\/li\u003e\n\u003cli\u003eDeep, punchy low-frequency output\u003c\/li\u003e\n\u003cli\u003eFlexible dual 4-ohm wiring options\u003c\/li\u003e\n\u003cli\u003eDurable construction with premium materials\u003c\/li\u003e\n\u003cli\u003eCarbon fiber dustcap enhances appearance and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDaily-driven systems requiring strong, reliable low-end performance\u003c\/li\u003e\n\u003cli\u003ePorted or sealed enclosures in sedans, SUVs, trucks, and hatchbacks\u003c\/li\u003e\n\u003cli\u003eSystems tuned for deeper, fuller bass\u003c\/li\u003e\n\u003cli\u003eSQL-style daily setups balancing punch and depth\u003c\/li\u003e\n\u003cli\u003eUsers seeking high-output performance at an affordable price\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828369985581,"sku":"DBz12D4","price":249.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828370018349,"sku":"DBz12D2","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dbz-12-subwoofer-1300w-rms-w_66318c1e-2617-4bc5-818a-d218e7898f7a.jpg?v=1782676185"},{"product_id":"down4sound-dbz-10-subwoofer-1300w-rms","title":"Down4Sound DBZ 10\" Subwoofer 1300W RMS","description":"\u003cp\u003eThe DOWN4SOUND DBz-10 D4 is built for car audio enthusiasts seeking massive bass, rugged performance, and unbeatable value. Delivering a true 1300W RMS, this subwoofer produces strong, punchy bass without demanding a premium budget. With a dual 4-ohm voice coil configuration, the DBz-10 D4 offers wiring flexibility for a wide variety of amplifier setups. Its real carbon fiber dustcap adds a sleek aesthetic while improving rigidity and long-term durability.\u003c\/p\u003e \u003cp\u003eBuilt to perform in both compact and mid-sized enclosures, the DBz-10 D4 delivers serious output for daily drivers, demo setups, and cost-effective high-performance builds.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1300W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e2.75-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e28 mm one-way Xmax for extreme linear excursion\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap for strength, rigidity, and premium appearance\u003c\/li\u003e \u003cli\u003eAdvanced venting throughout the motor structure for improved cooling\u003c\/li\u003e \u003cli\u003eHeavy-duty build engineered for long-term high-output use\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.050 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e40.803 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e2.360\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.510\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.420\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e331.124 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e45.948 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms\u003c\/h2\u003e0.795\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e8.600 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 56.305 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e31.746 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e82.5 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e28 mm (one-way, mechanical)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.09 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eHigh-efficiency motor system engineered for aggressive output\u003c\/li\u003e \u003cli\u003eRear gap and pole venting for improved cooling and reduced thermal compression\u003c\/li\u003e \u003cli\u003eReinforced suspension designed for reliable high-excursion performance\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.75\" voice coil built for thermal strength\u003c\/li\u003e \u003cli\u003ePremium carbon fiber dustcap improves rigidity and reduces cone flex\u003c\/li\u003e \u003cli\u003eBuilt to maximize output while maintaining long-term durability\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosures\u003c\/strong\u003e\u003c\/h2\u003e \u003ch2\u003eSealed Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e0.5 cubic foot (net)\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePorted Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e1.0 cubic foot (net)\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Tuning\u003c\/h2\u003e32 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Port Area\u003c\/h2\u003e12–15 square inches total port area\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis enclosure range gives the DBz-10 D4 excellent balance between low-end extension and punchy upper bass for daily listening while maintaining proper airflow through the port.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e9.45 in (240 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e7.36 in (187 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e10.79 in (274 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e7.48 in (190 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e31.7 lb (14.4 kg)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e35.3 lb (16.0 kg)\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy You Should Buy the DBz-10 D4\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDelivers true 1300W RMS performance suitable for demanding systems\u003c\/li\u003e \u003cli\u003eCompact footprint with impressive output capability\u003c\/li\u003e \u003cli\u003eDual 4-ohm coils provide wiring flexibility across common amplifier setups\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap enhances both appearance and structural rigidity\u003c\/li\u003e \u003cli\u003ePerfect blend of affordability, durability, and daily-driving performance\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily-driven builds needing high output without large enclosure requirements\u003c\/li\u003e \u003cli\u003eSystems tuned in the \u003cstrong\u003e28–35 Hz\u003c\/strong\u003e range, where the DBz-10 D4 produces deep, rolling lows enhanced by real cabin gain\u003c\/li\u003e \u003cli\u003ePorted or sealed enclosures in sedans, SUVs, hatchbacks, and trucks\u003c\/li\u003e \u003cli\u003eSQL-style daily setups seeking a balance of low-end authority and punch\u003c\/li\u003e \u003cli\u003eUsers wanting responsive, aggressive bass performance at a budget-friendly price\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828370182189,"sku":"DBz10D4","price":239.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828370214957,"sku":"DBz10D2","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dbz-10-subwoofer-1300w-rms-w_55c9f220-2097-44f9-a369-cde9732aa1c6.jpg?v=1782676181"},{"product_id":"down4sound-dbz-8-subwoofer-700w-rms","title":"Down4Sound DBZ 8\" Subwoofer 700W RMS","description":"\u003cp\u003eThe DOWN4SOUND DBz-8 D4 is the ultimate budget banger designed to deliver exceptional performance and value. With a true 700W RMS power rating, this subwoofer provides big, punchy bass without the big price tag. Featuring a dual 4-ohm voice coil configuration, the DBz-8 offers versatile wiring options and strong output in compact enclosures. The real carbon fiber dustcap adds a premium aesthetic while increasing structural rigidity and performance.\u003c\/p\u003e \u003cp\u003eEvery component is engineered for efficiency, durability, and long-term reliability, making the DBz-8 D4 an ideal upgrade for daily drivers, small-space installs, or budget-friendly high-output systems.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e700W RMS power handling\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil design\u003c\/li\u003e \u003cli\u003e2.5-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003e21 mm Xmax for impressive linear travel\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap for strength, rigidity, and premium appearance\u003c\/li\u003e \u003cli\u003eAdvanced venting throughout the motor structure for improved cooling\u003c\/li\u003e \u003cli\u003eHeavy-duty construction optimized for compact high-output performance\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eTechnical Specifications (T\/S Parameters)\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.400 ohm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e46.157 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e1.895\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.618\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.466\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e202.138 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e57.318 μm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRms (Mechanical Resistance)\u003c\/h2\u003e0.757\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e3.290 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 210.105 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e24.797 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e79.2 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e21 mm\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDisplacement\u003c\/h2\u003e0.07 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eEngineering and Construction\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eCompact, efficient motor engineered for strong output\u003c\/li\u003e \u003cli\u003eRear gap ventilation for improved coil cooling and reduced thermal compression\u003c\/li\u003e \u003cli\u003eReinforced suspension system for stable high-excursion performance\u003c\/li\u003e \u003cli\u003eReal carbon fiber dustcap enhances rigidity and prevents deformation\u003c\/li\u003e \u003cli\u003ePrecision-wound 2.5\" coil supports high power levels without heat fatigue\u003c\/li\u003e \u003cli\u003eBuilt to provide maximum performance at an affordable cost\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eRecommended Enclosures\u003c\/strong\u003e\u003c\/h2\u003e \u003ch2\u003eSealed Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e0.3 – 0.4 cu ft (net)\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePorted Enclosure\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e0.75 – 1.0 cu ft (net)\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Tuning\u003c\/h2\u003e32 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRecommended Port Area\u003c\/h2\u003e9 – 15 sq in total\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e7.32 in (186 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e6.61 in (168 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOutside Diameter\u003c\/h2\u003e8.71 in (221 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e6.69 in (170 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eNet Weight\u003c\/h2\u003e23.6 lb (10.7 kg)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eGross Weight\u003c\/h2\u003e26.9 lb (12.2 kg)\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\u003cstrong\u003eWhy You Should Buy the DBz-8 D4\u003c\/strong\u003e\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eHigh-quality bass on a budget\u003c\/li\u003e \u003cli\u003eCompact 8\" form factor with strong low-end output\u003c\/li\u003e \u003cli\u003eDual 4-ohm coils allow flexible wiring options\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap adds strength and a premium aesthetic\u003c\/li\u003e \u003cli\u003ePerfect blend of affordability, power, and durability\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003e\n\u003cstrong\u003eIdeal Applications\u003c\/strong\u003e\u003cem\u003e\u003cbr\u003e\u003c\/em\u003e\n\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDaily-driven bass systems requiring big sound in tight spaces\u003c\/li\u003e \u003cli\u003eBuilds tuned in the \u003cstrong\u003e28–35 Hz range\u003c\/strong\u003e, where the DBz-8 produces deep, rolling lows that come alive with real cabin gain\u003c\/li\u003e \u003cli\u003eCompact ported enclosures, under-seat installs, hatchbacks, and small SUV systems\u003c\/li\u003e \u003cli\u003eSQL-style daily setups emphasizing strong midbass punch with usable low-end authority\u003c\/li\u003e \u003cli\u003eUsers wanting responsive, aggressive bass performance without needing a large enclosure\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828370346029,"sku":"DBz8D4","price":199.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66828370378797,"sku":"DBz8D2","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dbz-8-subwoofer-700w-rms-w_aef239f0-511e-485f-a9dd-9f29ec3242d9.jpg?v=1782676199"},{"product_id":"down4sound-dvx-10-subwoofer-1700w-rms","title":"Down4Sound DVX 10\" Subwoofer 1700W RMS","description":"\u003cp\u003eThe \u003cstrong\u003eDOWN4SOUND DVX-10 D4\u003c\/strong\u003e is engineered for listeners who demand \u003cstrong\u003etight, authoritative, and durable low-frequency performance\u003c\/strong\u003e in a \u003cstrong\u003emore compact footprint\u003c\/strong\u003e. Built with a high-strength motor structure, extended mechanical throw, and a rigid carbon fiber dustcap, the DVX-10 delivers impressive output and control ideal for daily driving, demo systems, and high-power compact builds.\u003c\/p\u003e \u003cp\u003eRated for \u003cstrong\u003etrue high-power handling\u003c\/strong\u003e and equipped with \u003cstrong\u003edual 4-ohm voice coils\u003c\/strong\u003e, the DVX-10 D4 offers flexible wiring options while maintaining excellent efficiency, cooling, and long-term reliability under sustained SPL.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eHigh RMS power handling for demanding systems\u003c\/li\u003e \u003cli\u003eDual 4-ohm voice coil configuration\u003c\/li\u003e \u003cli\u003e3-inch high-temperature voice coil\u003c\/li\u003e \u003cli\u003eLong linear excursion design\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap for added rigidity and durability\u003c\/li\u003e \u003cli\u003eAdvanced motor ventilation for superior cooling\u003c\/li\u003e \u003cli\u003eHeavy-duty construction built for daily and high-output use\u003c\/li\u003e \u003cli\u003eCompact 10-inch format with serious low-frequency authority\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eTechnical Specifications (T\/S Parameters – DVX-10 D4)\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eRevc (DC Resistance)\u003c\/h2\u003e6.05 Ω\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eResonance Frequency (Fs)\u003c\/h2\u003e38.54 Hz\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQms\u003c\/h2\u003e3.409\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQes\u003c\/h2\u003e0.531\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eQts\u003c\/h2\u003e0.459\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMms (Moving Mass)\u003c\/h2\u003e360.12 g\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eCms (Compliance)\u003c\/h2\u003e47.35 µm\/N\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eBL Product\u003c\/h2\u003e31.53 T·m\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eVas\u003c\/h2\u003e8.07 L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSd:\u003c\/strong\u003e 346.36 cm²\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eSensitivity (SPL)\u003c\/h2\u003e81.3 dB\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eXmax\u003c\/h2\u003e 31 mm \u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eEngineering and Construction\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eExtended pole piece for improved linearity and mechanical control\u003c\/li\u003e \u003cli\u003eDual-flared pole venting for reduced turbulence and quiet airflow\u003c\/li\u003e \u003cli\u003eRear gap ventilation to manage voice coil temperatures under load\u003c\/li\u003e \u003cli\u003eLarge-format motor for increased magnetic strength and efficiency\u003c\/li\u003e \u003cli\u003eLong-fiber spider system for consistent suspension behavior\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap for reduced flex and enhanced durability\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eRecommended Enclosure\u003c\/h2\u003e \u003ch3\u003ePorted Enclosure (Recommended)\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eNet Volume\u003c\/h2\u003e~1.25 cubic feet\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eTuning Frequency\u003c\/h2\u003e~34–35 Hz\u003c\/li\u003e \u003cli\u003eDisplacement: 21 cu ft\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis alignment delivers strong low-end extension, fast transient response, and excellent output for daily music while maintaining control and efficiency.\u003c\/p\u003e \u003chr\u003e \u003ch2\u003ePhysical Dimensions\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCutout Diameter\u003c\/h2\u003e9.45 in (240 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMounting Depth\u003c\/h2\u003e8.86 in (225 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eOverall Diameter\u003c\/h2\u003e11.42 in (290 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMotor Diameter\u003c\/h2\u003e10.04 in (255 mm)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eWeight\u003c\/h2\u003e~45 lb\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch2\u003eWhy Choose the DVX-10 D4\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eCompact size with serious low-frequency output\u003c\/li\u003e \u003cli\u003eDesigned for clean, controlled bass with high durability\u003c\/li\u003e \u003cli\u003eDual 4-ohm coils allow flexible wiring configurations\u003c\/li\u003e \u003cli\u003eCarbon fiber dustcap adds strength and premium appearance\u003c\/li\u003e \u003cli\u003eIdeal balance of SPL capability and daily sound quality\u003c\/li\u003e \u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"D4","offer_id":66828388237357,"sku":"DVX10D4","price":419.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":66829263732781,"sku":"DVX10D2","price":419.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-dvx-10-subwoofer-1700w-rms-w_ad5b97aa-f8fe-4d28-b352-165ef467527e.jpg?v=1782676212"}],"url":"https:\/\/www.jsultimatesounds.com\/collections\/down4sound-subwoofers.oembed","provider":"JS Ultimate Sounds","version":"1.0","type":"link"}