{"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","url":"https:\/\/www.jsultimatesounds.com\/products\/down4sound-tcx-18-subwoofer-2700w-rms","provider":"JS Ultimate Sounds","version":"1.0","type":"link"}