{"product_id":"4312-d4","title":"4312 D2\/D4 – 4000 Series 12″ Subwoofer","description":"\u003cp\u003eThe 4000 series 12 employs a finely-tuned balance of damping and extensive motor force to achieve very high efficiency, offering exceptional versatility and unmatched performance in a variety of real-world functions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000\"\u003eDual 2 ohm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFs\u003c\/strong\u003e          33.04 Hz\u003cbr\u003e\n\u003cstrong\u003eQms\u003c\/strong\u003e       7.346\u003cbr\u003e\n\u003cstrong\u003eVas\u003c\/strong\u003e       17.17 liters\u003cbr\u003e\n\u003cstrong\u003eCms\u003c\/strong\u003e       0.055 mm\/N\u003cbr\u003e\n\u003cstrong\u003eMms\u003c\/strong\u003e    420.5 g\u003cbr\u003e\n\u003cstrong\u003eRms\u003c\/strong\u003e     11.92 kg\/s\u003cbr\u003e\n\u003cstrong\u003eDia\u003c\/strong\u003e     244.8 mm\u003cbr\u003e\n\u003cstrong\u003eSd\u003c\/strong\u003e        468.8 sq cm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQes\u003c\/strong\u003e      0.565\u003cbr\u003e\n\u003cstrong\u003eRe\u003c\/strong\u003e        4.158 ohms\u003cbr\u003e\n\u003cstrong\u003eLe\u003c\/strong\u003e        5.907mH\u003cbr\u003e\n\u003cstrong\u003eZ\u003c\/strong\u003e          58.20ohms\u003cbr\u003e\n\u003cstrong\u003eBL     \u003c\/strong\u003e 25.34 Tm\u003cbr\u003e\n\u003cstrong\u003eBL^2\/Re\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQts      \u003c\/strong\u003e 0.525\u003cbr\u003e\n\u003cstrong\u003eno\u003c\/strong\u003e         0.106 %\u003cbr\u003e\n\u003cstrong\u003eSPL\u003c\/strong\u003e    82.38 dB\u003cbr\u003e\n\u003cstrong\u003eEBP\u003c\/strong\u003e   58.48\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000\"\u003eDual 4 ohm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFs\u003c\/strong\u003e          35.26 Hz\u003cbr\u003e\n\u003cstrong\u003eQms\u003c\/strong\u003e       7.092\u003cbr\u003e\n\u003cstrong\u003eVas\u003c\/strong\u003e       16.64 liters\u003cbr\u003e\n\u003cstrong\u003eCms\u003c\/strong\u003e       0.053 mm\/N\u003cbr\u003e\n\u003cstrong\u003eMms\u003c\/strong\u003e     381.1 g\u003cbr\u003e\n\u003cstrong\u003eRms\u003c\/strong\u003e     12.01 kg\/s\u003cbr\u003e\n\u003cstrong\u003eDia\u003c\/strong\u003e     244.8 mm\u003cbr\u003e\n\u003cstrong\u003eSd\u003c\/strong\u003e        470.2 sq cm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQes\u003c\/strong\u003e      0.621\u003cbr\u003e\n\u003cstrong\u003eRe\u003c\/strong\u003e        6.57 ohms\u003cbr\u003e\n\u003cstrong\u003eLe\u003c\/strong\u003e         8.127 mH\u003cbr\u003e\n\u003cstrong\u003eZ\u003c\/strong\u003e          81.59 ohms\u003cbr\u003e\n\u003cstrong\u003eBL     \u003c\/strong\u003e 29.88 Tm\u003cbr\u003e\n\u003cstrong\u003eBL^2\/Re\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQts      \u003c\/strong\u003e 0.571\u003cbr\u003e\n\u003cstrong\u003eno\u003c\/strong\u003e         0.113 %\u003cbr\u003e\n\u003cstrong\u003eSPL\u003c\/strong\u003e    82.69 dB\u003cbr\u003e\n\u003cstrong\u003eEBP\u003c\/strong\u003e   56.78\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eXmax  \u003c\/strong\u003e19 mm (one-way linear excursion)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e 12in\u003cbr\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e 12.60in \/ 320mm\u003cbr\u003e\n\u003cstrong\u003eMounting Hole Diameter\u003c\/strong\u003e 11.12in \/ 282.5mm\u003cbr\u003e\n\u003cstrong\u003eBolt Hole Circle Diameter\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eMotor Outer Diameter \u003c\/strong\u003e7.72in \/ 196mm\u003cbr\u003e\n\u003cstrong\u003eMounting Depth\u003c\/strong\u003e 7.64in \/ 194mm\u003cbr\u003e\n\u003cstrong\u003eRequired Pole Vent Clearance\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eDriver Displacement\u003c\/strong\u003e 0.114 cu ft \/ 3.24 l\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinimum Sealed Volume\u003c\/strong\u003e N\/A\u003cbr\u003e\n\u003cstrong\u003eMinimum Vented Volume\u003c\/strong\u003e 1.30 cu ft \/ l net*\u003c\/p\u003e\n\u003cp\u003e* Tune for desired response\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-large wp-image-2477\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/recommended_enc_4212D2_vented_single-870x1024.png\" alt=\"\" width=\"870\" height=\"1024\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe above designs have been engineered for a “two tier” balance of compatibility: First, between the cabin acoustics of a sedan, hatchback and an SUV, and second, between the two available voice coil configurations, for a total of six balance points. This ensures a linear response and optimal power handling for listening purposes under most circumstances. Please visit our \u003ca href=\"https:\/\/adcaraudio.com\/store\/enclosure-design-service\/\"\u003eEnclosure Design Service\u003c\/a\u003e page for custom designs.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-278.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-5869\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-216.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-283.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-5901\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-221.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-284.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-5910\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-222.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-291.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-5961\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-5.jpg\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-333.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-7365\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-270.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-279.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg class=\"alignnone wp-image-5871 size-full\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-217.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-302.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg class=\"alignnone wp-image-6086 size-full\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-238.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-342.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-7804\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-279.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Design-345.pdf\"\u003e\u003cimg class=\"alignnone size-full wp-image-7833\" src=\"https:\/\/adcaraudio.com\/store\/wp-content\/uploads\/Web-Enclosure-Design-Button-282.png\" alt=\"\" width=\"300\" height=\"255\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Audio Dynamics","offers":[{"title":"Dual 2 ohm","offer_id":52549569806567,"sku":"4312 D2","price":549.0,"currency_code":"USD","in_stock":true},{"title":"Dual 4 ohm","offer_id":52549569839335,"sku":null,"price":549.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.mediocrecustoms.com\/products\/4312-d4","provider":"Mediocre Customs","version":"1.0","type":"link"}