{"product_id":"dd-audio-9918c-d1-supercharged-18-3200w-rms-dual-1-ohm-usa-built-subwoofer","title":"DD Audio 9918C-D1 SuperCharged 18\" 3200W RMS Dual 1 Ohm USA Built Subwoofer","description":"\u003cul\u003e\n\u003cli\u003eSUPERCHARGED MOTOR: A neodymium ring focuses magnetic energy into the voice coil gap for 20 to 25% more usable motor strength and tighter cone control.\u003c\/li\u003e\n\u003cli\u003eSAME 3200 WATT RMS RATING: Handles the same power as the standard 9918C, so the extra control comes without changing your amp requirements.\u003c\/li\u003e\n\u003cli\u003eBIG CONE, REAL CONTROL: The 9900 motor with a 260mm magnet keeps a heavy 18\" cone in check at high power.\u003c\/li\u003e\n\u003cli\u003eKEEPS COOL UNDER LOAD: A two-stage aluminum heatsink and vented Free Flow motor pull heat away during long, hard sessions.\u003c\/li\u003e\n\u003cli\u003eMADE FOR BIG PORTED BOXES: Designed for 5.0 to 6.0 cu. ft. ported enclosures, with 22mm of Xmax for deep, low bass.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eDD Audio 9918C-D1 SuperCharged 18\" 3200W RMS Dual 1 Ohm USA Built Subwoofer\u003c\/strong\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) DD Audio 18\" Dual 1-Ohm SuperCharged Subwoofer 9918C-D1, 3200W RMS \/ 9600W Peak, USA Built\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e SuperCharged subwoofers are made to order by DD Audio. Please allow approximately 1 to 2 weeks for your sub to be built before it ships.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThe DD Audio 9900C Series 18-inch subwoofer pairs solid engineering with premium materials for deep, powerful bass. It's built for competition and high-performance car audio systems, handling 3200W RMS with bursts up to 9600W peak. The aluminum Dual Stage Motor Heatsink, USA-made Iron Cloth Spider System, and 2nd Gen V-ROM surround help with cooling, durability, and excursion. The non-pressed carbon fiber-loaded pulp cone is light, strong, and handcrafted in the USA. This sub is made for large ported enclosures.\u003cbr\u003e\u003cbr\u003e\nThis is the SuperCharged version. DD adds a specially shaped neodymium ring inside the motor that redirects magnetic energy into the voice coil gap, raising usable motor strength by about 20 to 25%. On a cone this big, that extra grip makes a real difference, giving you cleaner, more controlled bass across the whole power range. Power handling stays the same as the standard 9918C, so plan your amp around 3200 watts RMS.\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\u003eSuperCharged Motor with Neodymium Flux Ring\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNEW Aluminum 2 Stage Motor Heatsink\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e260mm Magnet Diameter\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMulti-Vent Free Flow Cooling Motor\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eShorting Ring Motor\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e4.3\" High-Temp Voice Coil\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eExcursion Optimized ESP Frame\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eV-ROM Vario-Density Surround\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNon-Pressed Composite Reinforced Pulp Cone\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e11\" Dual\/Triple Layer Iron Cloth Spider\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLaminated Tinsel Leads\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHand Laid Composite Dust Cap\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eEmbossed DDesign Magnet Boot\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMade In USA\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\u003eSpeaker Size: 18 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eWatts RMS: 3200 (same as standard model)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eWatts Peak: 9600\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eImpedance: Dual 1-ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Diameter (VCD): 4 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePiston Diameter: 15.5 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eResonant Frequency (Fs): 26.24 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQms: 2.265\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQes: 0.5167 (standard model)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQts: 0.4705 (standard model)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVas: 161.9 liters\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eXmech (Max Excursion): 60 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eXmax (Linear Excursion): 22 mm\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eSuggested Enclosure Specifications\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eWoofer Displacement: 0.46 cu. ft.\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRecommended Ported Enclosure: 5.0 - 6.0 cu. ft.\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrame Outer Diameter (OD): 18.25 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrame OD with Gasket: 18.5 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Diameter: 16.75 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 11.875 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Diameter: 10.3125 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMotor Depth: 4.5625 inches\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eShipping Weight: 89 lbs\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eIf you want the biggest 9900 motor driving an 18\" with even more control, the SuperCharged 9918C is the one to grab.\u003c\/p\u003e","brand":"DD Audio","offers":[{"title":"Default Title","offer_id":67972158423288,"sku":"DD-9918C-D1-SC","price":1079.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/c2d7c76816ea0b9916892d3c397c51a609e3196276a91979c5e86250235e2ce9_66ceadf6-8c96-45bd-9603-49ee0635dd28.jpg?v=1793806187","url":"https:\/\/bigjeffaudio.com\/products\/dd-audio-9918c-d1-supercharged-18-3200w-rms-dual-1-ohm-usa-built-subwoofer","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}