{"product_id":"dc-audio-level-4-18-subwoofer","title":"DC Audio Level 4 18\" Subwoofer","description":"\u003cdiv\u003e\n\u003cp\u003eThe DC Audio Level 4 18\" Subwoofer is a high-performance, SQ-focused 18-inch woofer built for serious car audio setups that demand loud, controlled bass. It delivers 1500W RMS \/ 3000W peak and features a 23.5mm X-Max for substantial cone travel in the right enclosure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePower Handling (RMS \/ Peak)\u003c\/b\u003e: 1500W RMS \/ 3000W peak — provides significant headroom for dynamic bass bursts and sustained loud output when paired with an ample amplifier and proper enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eX-Max\u003c\/b\u003e: 23.5 mm — indicates the woofer’s extreme excursion capability, enabling deep bass and impactful low-end response in a suitable enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e2.5 mm Aluminum Shorting Ring\u003c\/b\u003e (demodulation ring): reduces motor inductance and helps prevent power compression, while acting as an internal heatsink to pull heat from windings toward coil venting for improved cooling under heavy use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMotor assembly\u003c\/b\u003e: large triple-stacked motor with chrome top plate and T yoke, engineered for high stiffness and consistent control, with 23.5mm of X-Max.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVoice Coil\u003c\/b\u003e: 3\" hi-temp aluminum voice coil wound on a black anodized former — engineered to handle high temperatures and maintain coil integrity under demanding output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCone and Surround\u003c\/b\u003e: extremely rigid non-pressed paper cone with a multilayered polymer foam stitched surround and a polypropylene dust cover with DC logo — designed for durable, long-term excursion and restrained cone flex.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFrame and Mounting\u003c\/b\u003e: cast aluminum black frame with no invert mount and rubber mounting gasket; chrome spring-loaded push terminals for reliable connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLead Wire\u003c\/b\u003e: upgraded lead wire sewn to the spider for improved durability under continuous movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImpedance Options\u003c\/b\u003e: Ohm options are d1\/d2\/d4 (dual 1, dual 2, dual 4-ohm configurations) to suit different amplifier loads and wiring schemes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnclosure Guidelines\u003c\/b\u003e: suggested sealed box 3.5 ft and ported box 5.5 ft for the 18\" model, providing guidance to optimize bass extension and transient response in real-world builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePhysical dimensions (18\" version)\u003c\/b\u003e: Mounting Depth 9.5\", Mounting Hole Diameter 16.75\", Outside Driver Diameter 18.5\", VC Diameter 3.0\" — ensures fitment planning for installations with limited space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a complete build, the Level 4 18\" integrates with a capable amplifier and an appropriately sized enclosure to deliver precise, deep bass with strong control. The combination of the 2.5mm shorting ring, triple-stacked motor, and high-temperature coil design helps manage heat and inductance at high output, making it well-suited to premium SQ-focused systems that still demand substantial low-frequency impact.\u003c\/p\u003e \u003cbr\u003e \u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-1xy1\"\u003e\u003c\/th\u003e\n\u003cth class=\"tg-mow8\"\u003e10\"\u003c\/th\u003e\n\u003cth class=\"tg-mow8\"\u003e12\"\u003c\/th\u003e\n\u003cth class=\"tg-mow8\"\u003e15\"\u003c\/th\u003e\n\u003cth class=\"tg-mow8\"\u003e18\"\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eMounting Depth\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e6.25\"\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e6.75\"\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e8\"\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e9.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eMounting Hole Diameter\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e9.35\"\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e11\"\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e14\"\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e16.75\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eOutside Driver Diameter\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e11\"\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e12.5\"\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e15.7\"\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e18.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eVC Diameter\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e3.0\"\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e3.0\"\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e3.0\"\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e3.0\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eDisplacement\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e.16 ft\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e.18 ft\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e.21 ft\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e.26ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003ePower Handling rms\/peak\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1500\/3000\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1500\/3000\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1500\/3000\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1500\/3000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eOhm Options\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003ed1\/d2\/d4\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003ed1\/d2\/d4\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003ed1\/d2\/d4\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003ed1\/d2\/d4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eSd\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e324 cm\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e481 cm\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e823 cm\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1217 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eVas\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e00.00 L\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e17.42 L\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e00.00 L\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e000.00 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eCms\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.000 Mm\/n\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.058 Mm\/n\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.000 Mm\/n\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.000 Mm\/n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eMms\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e000.0 g\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e232.74 g\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e000.0 g\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e000.0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eFs\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.0Hz\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e43 Hz\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.0Hz\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.0 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eBl\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e28.49 N\/A\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e28.49 N\/A\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e28.49 N\/A\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e28.49 N\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eRe\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e8.6 Ohm\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e8.6 Ohm\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e8.6 Ohm\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e8.6 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eLe\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.00 mH\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e5.62 mH\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.00 mH\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.00 mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eQms\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.00\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e7.92\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.0\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.00\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eQes\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.00\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.66\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.00\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e0.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eQts\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.000\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.615\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.00\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e0.000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eXmax\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e23.5mm\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e23.5mm\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e23.5mm\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e23.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eRef SPL @1 watt\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00 db\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e84.94 db\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.0 db\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e00.0 db\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eSuggest Sealed Box\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e.75 ft\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e1.0 ft\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e2.0 ft\u003c\/td\u003e\n\u003ctd class=\"tg-3iig\"\u003e3.5 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eSuggested Ported Box\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1.0 ft\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e1.5 ft\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e3.0 ft\u003c\/td\u003e\n\u003ctd class=\"tg-mow8\"\u003e5.5 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"DC Audio","offers":[{"title":"Dual 1 Ohm","offer_id":49850211959012,"sku":null,"price":434.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 Ohm","offer_id":49850211991780,"sku":null,"price":434.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":49850212024548,"sku":null,"price":434.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/level4sub2421_fc819df3-1016-4978-bc8b-94aea7c2e982.png?v=1789260611","url":"https:\/\/www.12voltoutlet.com\/products\/dc-audio-level-4-18-subwoofer","provider":"12 Volt Outlet","version":"1.0","type":"link"}