{"product_id":"12-4-ohm-1750w-rms-v-2-dual-voice-coil-subwoofer-u-series-u-12-d4-v2-open-box","title":"12\" 4 Ohm 1750W RMS V.2 Dual Voice Coil Subwoofer U-Series U-12-D4-V2 OPEN BOX","description":"\u003cul\u003e\n\u003cli\u003eStitched-on double-XL tinsel leads\u003c\/li\u003e\n\u003cli\u003eSolid pole with vent channels and aluminum shorting ring cap\u003c\/li\u003e\n\u003cli\u003eInnovative high-velocity cast aluminum vented frame spacer ring\u003c\/li\u003e\n\u003cli\u003eBlack Aluminum 3\" voice coil former for superior heat dissipation\u003c\/li\u003e\n\u003cli\u003eDouble stitched surround\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e12\" 4 Ohm 1750W RMS V.2 Dual Voice Coil Subwoofer Sundown U-Series U-12-D4-V2\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) 12\" 4 Ohm 1750W RMS V.2 Dual Voice Coil Subwoofer Sundown U-Series U-12-D4-V2\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eDesigned to be at home in the competition lanes or playing your favorite music, the U Series is the premier \"standard suspension\" woofer in the Sundown lineup. A double-stacked 9.4-inch-wide ferrite magnet system is coupled to a thick top plate. A thick set of shorting rings are used inside the magnets and on the pole cap, smoothing out frequency response while doubling as a heat sink and airflow guide. A custom, substantially thicker aluminum frame was designed specifically for the U Series, equipped with heat dissipation ribs. The U v.2 motor also features an extended pole piece to keep the coil under perfect control under high stress. The coil temperature is kept in check via a high-velocity solid pole \/ machined pole channels arrangement and a series of 16 direct air-gap vents in the back plate.\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\u003eBlack Aluminum 3\" voice coil former for superior heat dissipation\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHigh Temperature Round-Wire ALU voice coil with high-temp black adhesive\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDouble stitched surround\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHeavy duty cast baskets - all new, custom-tooled\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSpring loaded terminals accept up to 8 gauge\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eStitched-on double-XL tinsel leads\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSolid pole with vent channels and aluminum shorting ring cap\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRear drilled gap-venting\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eInnovative high-velocity cast aluminum vented frame spacer ring\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet ID shorting ring\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eTop-Plate Cooling Channels\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCast Aluminum surround bolt-on rings\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOptimized for small ported or bandpass 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\u003eRE (Ohms): 3.8407 \/ 6.0577\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFS (Hz): 41.3260 \/ 41.9087\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVAS (L): 14.7612 \/ 14.7535\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQes: 0.4862 \/ 0.5870\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQms: 4.7454 \/ 4.9022\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQts: 0.4410 \/ 0.5242\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLe (mH): 3.1858 \/ 4.3694\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBL (NA): 27.2694 \/ 31.1265\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMms (Grams): 358.6438 \/ 356.5462\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCms (uM\/N): 40.4709 \/ 40.4498\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSens (dB @ 1w\/1m): 85.1980 \/ 84.4191\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"Sundown Audio","offers":[{"title":"Default Title","offer_id":48686902313208,"sku":"SD-U-12-D4-V2-OPEN-7452","price":529.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/e606ca1a7b559cb98971fb5cbbae3eb0bfce88bdd49ddebc5e3e90ec8aae31ac.jpg?v=1780083655","url":"https:\/\/bigjeffaudio.com\/products\/12-4-ohm-1750w-rms-v-2-dual-voice-coil-subwoofer-u-series-u-12-d4-v2-open-box","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}