{"product_id":"soundqubed-hdx4-2-18-subwoofer","title":"SoundQubed HDX4.2 18\" Subwoofer Dual 1\/2 Ohm 4000W RMS Car Audio","description":"\u003cp\u003eWant bass you can feel in your chest? The \u003cstrong\u003eSoundQubed HDX4.2 18\" Subwoofer Dual 1\/2 Ohm 4000W RMS Car Audio\u003c\/strong\u003e delivers. This SoundQubed \u003cstrong\u003e18\" car subwoofer\u003c\/strong\u003e pairs serious power handling with a stiff cone and oversized coil for loud, accurate low-frequency output.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003eSoundQubed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eModel\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003eHDX4.2-18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eSeries\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003eHDX4.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eSize\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003e18\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eRMS Power\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003e4000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003ePeak Power\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003e8000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eVoice Coil\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003e4\" Dual 1\/2 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 12px 4px 0;\"\u003eSensitivity\u003c\/th\u003e\n\u003ctd style=\"padding:4px 0;\"\u003e90.4 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cp\u003eThe SoundQubed HDX4.2-18D2 is a competition-grade 18” subwoofer built to deliver crushing bass, unmatched power handling, and long-term reliability. Rated at 4000W RMS and 16,000W burst power, this dual 2-ohm powerhouse is engineered for high-output systems that demand deep, clean, and punishing low-end. With a sensitivity of 90.4dB and a resonant frequency of 31.7Hz, it offers efficient, ground-shaking performance with impressive clarity. A massive 402 oz magnet, 4” high-temp voice coil, and 23mm Xmax allow for extreme excursion and heat dissipation.\u003c\/p\u003e\u003cp\u003eGet it shipped quick from \u003cstrong\u003eJS Ultimate Sounds\u003c\/strong\u003e, your go-to for \u003cstrong\u003eSoundQubed\u003c\/strong\u003e car audio. Need a hand matching subs, amps, and enclosures? Our team builds systems for a living and we're happy to help.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAuthorized SoundQubed dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"SoundQubed","offers":[{"title":"Dual 1 Ohm","offer_id":66845052829741,"sku":"HDX4.2-18D1","price":929.95,"currency_code":"USD","in_stock":true},{"title":"Dual 2 Ohm","offer_id":66845052862509,"sku":"HDX4.2-18D2","price":929.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/4__86945.1744831153.png?v=1781061216","url":"https:\/\/www.jsultimatesounds.com\/products\/soundqubed-hdx4-2-18-subwoofer","provider":"JS Ultimate Sounds","version":"1.0","type":"link"}