{"product_id":"ds18-18-3500w-rms-dual-1-ohm-carbon-fiber-car-subwoofer-carbon18-1d","title":"DS18 18\" 3500W RMS Dual 1-Ohm Carbon Fiber Car Subwoofer CARBON18.1D","description":"\u003cul\u003e\n\u003cli\u003e3500 WATTS RMS POWER HANDLING: Built for demanding car audio systems, this massive 18-inch subwoofer handles 3500 watts RMS and up to 7000 watts maximum power.\u003c\/li\u003e\n\u003cli\u003eHIGH-EXCURSION BASS PERFORMANCE: Provides up to 22.5mm of one-way excursion to move serious air and deliver deep, powerful low-frequency output.\u003c\/li\u003e\n\u003cli\u003eCARBON-FIBER CONSTRUCTION: A rigid carbon-fiber cone and matching 8-inch dust cap provide controlled response and dependable performance under heavy use.\u003c\/li\u003e\n\u003cli\u003eDUAL 1-OHM VOICE COILS: Wire the subwoofer to a final 0.5-ohm or 2-ohm load for flexible compatibility with properly matched amplifiers.\u003c\/li\u003e\n\u003cli\u003eBUILT FOR HIGH-POWER SYSTEMS: Features a 3.5-inch voice coil, improved heat dissipation, 4-gauge terminals, an aluminum basket, and a massive 425-ounce ferrite magnet.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eDS18 18\" 3500W RMS Dual 1-Ohm Carbon Fiber Car Subwoofer CARBON18.1D\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThis Listing Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e(1) DS18 CARBON18.1D 18\" High-Excursion Car Subwoofer\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eBuilt for extreme low-frequency output, the DS18 CARBON18.1D delivers 3500 watts RMS and 7000 watts maximum power handling. Its massive 18-inch carbon-fiber cone and 22.5mm one-way excursion move serious amounts of air for deep, powerful bass you can feel throughout the vehicle.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThe carbon-fiber cone and matching 8-inch dust cap provide the strength and rigidity required to maintain controlled performance under heavy use. A 3.5-inch voice coil with an aluminum former, improved heat dissipation, and a massive 425-ounce ferrite magnet help support dependable performance at high power levels.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eDual 1-ohm voice coils allow the subwoofer to be wired to a final 0.5-ohm or 2-ohm load. Heavy-duty 4-gauge push terminals accommodate oversized speaker wire for a secure connection. The cast-aluminum basket, foam surround, and crossed spider leads complete a durable platform designed for high-output car audio systems.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eHigh-excursion 18-inch car subwoofer\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e3500 watts RMS power handling\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e7000 watts maximum power handling\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDual 1-ohm voice coils\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e0.5-ohm or 2-ohm final wiring capability\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCarbon-fiber cone and dust cap\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e22.5mm one-way excursion\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eImproved heat-dissipation design\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e3.5-inch voice coil with aluminum former\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHeavy-duty 4-gauge push terminals\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCast-aluminum basket\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLarge 425-ounce ferrite magnet\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCompatible with sealed and ported enclosures\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eBrand: DS18\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eModel: CARBON18.1D\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eProduct Type: High-Excursion Car Subwoofer\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNominal Diameter: 18 inches \/ 457mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice-Coil Configuration: Dual 1 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNominal Impedance: 1 + 1 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRMS Power Handling: 3500 Watts\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMaximum Power Handling: 7000 Watts\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSensitivity: 85dB at 1W\/1m\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrequency Response: 10Hz to 200Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRecommended Low-Pass Crossover: 60Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCone Shape: Conical\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eImproved Heat Dissipation: Yes\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSpeaker Terminals: 4-gauge push terminals\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eMotor Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice-Coil Diameter: 3.5 inches \/ 89mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice-Coil Former Material: Aluminum\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice-Coil Winding Material: CCAR\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCone Material: Carbon fiber\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDust-Cap Material: Carbon fiber\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDust-Cap Diameter: 8 inches \/ 200mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSurround Material: Foam\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSpider Diameter: 9 inches \/ 228mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLead Connection Type: Crossed through spider\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBasket Material: Aluminum\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBasket Color and Finish: Black aluminum\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet Material: Ferrite\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet Weight: 425 ounces\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThiele and Small Parameters:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eEquivalent Compliance Volume, Vas: 56.38L \/ 1.991 cubic feet\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOne-Way Excursion, Xmax: 22.5mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFree-Air Resonance, Fs: 33Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMechanical Q, Qms: 6.778\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eElectrical Q, Qes: 1.005\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eTotal Q, Qts: 0.87\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMoving Mass, Mms: 779.1g\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCompliance, Cms: 29.3mm\/N\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBL Factor: 18.01\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice-Coil Inductance, Le: 0.95mH\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDiaphragm Area, Sd: 1164cm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDC Resistance, Re: 1 + 1 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eEfficiency Bandwidth Product, EBP: 32.8\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Enclosures:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eSealed Internal Volume: 90L \/ 3.2 cubic feet\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSealed Enclosure Output Response: 32Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePorted Internal Volume: 212L \/ 7.5 cubic feet\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSquare Port Dimensions: 4\" W x 18\" H x 20\" L\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePort Tuning Frequency: 30Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePorted Enclosure Output Response: 22Hz\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurements:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eOverall Diameter: 18.5 inches \/ 470mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOverall Depth: 14 inches \/ 355mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFront Mounting Baffle Cutout: 16.75 inches \/ 426mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 12.15 inches \/ 309mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Diameter: 9 inches \/ 230mm\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"DS18","offers":[{"title":"Default Title","offer_id":50136910954744,"sku":"DS-CARBON18.1D","price":849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/fe3cc08eb00c043d1b379c60b85f71ea77e5727353457ca17c18e310f9df059d.jpg?v=1786378428","url":"https:\/\/bigjeffaudio.com\/products\/ds18-18-3500w-rms-dual-1-ohm-carbon-fiber-car-subwoofer-carbon18-1d","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}