{"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","url":"https:\/\/www.jsultimatesounds.com\/products\/down4sound-dbz-18-subwoofer-1300w-rms","provider":"JS Ultimate Sounds","version":"1.0","type":"link"}