{"product_id":"soundqubed-hdx4-2-18d1","title":"SoundQubed HDX4.2-18D1 18\" Subwoofer, 4\" DVC 4000w\/8000w, D1","description":"\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e HDX4.2-18D1   \u003cstrong\u003eSold as:\u003c\/strong\u003e Each\u003c\/p\u003e\u003cp\u003eHDX4.2 Series Subwoofer 18 Inch 4\" DVC 4000w\/8000w D1\u003c\/p\u003e\u003cp\u003eThe SoundQubed HDX4.2-18D1 is a competition-grade 18” subwoofer engineered for massive output, deep frequency extension, and hardcore durability. Delivering an earth-shaking 4000W RMS and 16,000W burst power, this dual 1-ohm sub is built to dominate high-output systems with force and precision. With a sensitivity of 90.4dB and a resonant frequency of 31.6Hz, it delivers powerful, accurate bass capable of shaking any vehicle to its core. Featuring a massive 402 oz magnet, oversized 4” high-temp voice coil, and a 23mm Xmax, the HDX4.2-18D1 offers extreme excursion and superior thermal handling. Perfect for ported enclosures between 5 to 7 cubic feet, the HDX4.2-18D1 is the go-to sub for serious competitors and bassheads who demand unmatched performance and reliability.\u003c\/p\u003e\u003cp\u003eSpecifications:\u003cbr\u003eSize: 18\"\u003cbr\u003eRMS Power: 4000 W\u003cbr\u003ePeak Power: 16000 W\u003cbr\u003eMagnet Weight: 402 OZ\u003cbr\u003eCoil Diameter: 4 inch\u003cbr\u003eCoil Length: 70 mm\u003cbr\u003eFs: 31.6 Hz\u003cbr\u003eImpedance: 1+1 Ohm\u003cbr\u003eQms: 3.56\u003cbr\u003eQes: 0.52\u003cbr\u003eQts: 0.45\u003cbr\u003eVas: 114.0 L\u003cbr\u003eLe: 0.99 mH\u003cbr\u003eno: 0.67%\u003cbr\u003eCms: 0.06 mm\/N\u003cbr\u003eSensitivity (1W\/1M): 90.3 dB\u003cbr\u003eBL: 17.8 N\/A\u003cbr\u003eXmax: 23 mm\u003cbr\u003eSD: 1200 CM²\u003c\/p\u003e","brand":"SoundQubed","offers":[{"title":"Default Title","offer_id":47640282136738,"sku":"HDX4.2-18D1","price":929.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0455\/3526\/4930\/files\/HDX4.2-18D1_lg.png?v=1789044838","url":"https:\/\/tdscaraudio.com\/products\/soundqubed-hdx4-2-18d1","provider":"TDS Car Audio","version":"1.0","type":"link"}