{"product_id":"performance-optimized-down-fire-sealed-12-enclosure-prodigy-nb3-12","title":"Performance Optimized Down Fire Sealed 12\" Enclosure | Prodigy NB3-12","description":"\u003cp\u003eThe \u003cstrong\u003ePerformance Optimized Down Fire Sealed 12\" Enclosure for the Prodigy NB3-12\u003c\/strong\u003e is a low-profile sealed cabinet built around Prodigy Audio's shallow-mount 12\" subwoofer. It shares the 30 x 15 inch footprint of its 10\" counterpart and stands just 7.625 inches tall, which puts a full 12\" driver into spaces normally reserved for a 10.\u003c\/p\u003e\u003cp\u003eThe Prodigy NB3-12D4 is an 800-watt RMS dual 4-ohm subwoofer with 11mm of one-way Xmax at 70% BL in a 3.375 inch mounting depth. Prodigy kept the heavy hardware on this one rather than shrinking it to save depth: an 80 ounce ferrite magnet and a \u003cstrong\u003e3.0 inch\u003c\/strong\u003e four-layer copper voice coil, where most shallow 12s drop to a 2 or 2.5 inch coil. FEA-designed center pole vent, treated paper cone with rubber surround, stamped steel frame, Nomex and cotton blend spider with flat stitched tinsel leads. BL of 23.96 on a shallow driver is the number worth noticing.\u003c\/p\u003e\u003cp\u003eThe 1.02 cubic foot net volume lands this driver at \u003cstrong\u003eQtc 0.690, Fc 51.5 Hz, and a predicted anechoic F3 of 52.8 Hz\u003c\/strong\u003e. That sits right on the maximally flat shoulder, which is where you want a driver with a 29.665 liter Vas and a 36.2 Hz Fs. Unlike the shallow 10 in this series, the NB3-12 does not force a compromise between corner frequency and damping. It hits a textbook alignment and a low F3 in the same cabinet, and it does it on the same footprint as the 10 with only 1.375 inches of additional height.\u003c\/p\u003e\u003cp\u003eAnechoic F3 understates in-vehicle performance. Firing down into a floor, the sealed 12 dB per octave slope meets rising cabin gain below 60 Hz, and in-car response typically extends well below the anechoic number.\u003c\/p\u003e\u003cp\u003eConstruction is the full Proline X Performance Optimized platform: ShopSabre CNC-cut Langboard Elite MDF with \u003cstrong\u003eV-groove and dado joinery\u003c\/strong\u003e, perimeter cross-bracing, and a \u003cstrong\u003edouble-layer 1.5 inch front baffle\u003c\/strong\u003e (two 3\/4 inch sheets bonded) for maximum baffle rigidity and driver isolation. Corners are square on Down Fire cabinets. The driver fires down into the floor with the terminal cup \u003cstrong\u003eside mounted\u003c\/strong\u003e, keeping the connection accessible with the cabinet in place. Terminal cup is our Proline X ABS\/carbon fiber composite pre-wired with 12 gauge OFC.\u003c\/p\u003e\u003cp\u003eBring your own Prodigy NB3-12D4. Mount cutout is direct-fit.\u003c\/p\u003e\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year enclosure warranty.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540043821145,"sku":"PO 12-S DF NB3","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-micro-series-dual-15-sealed-enclosure-built-for-resonix-gus-15subwoofer-enclosuresproline-x-9360178_01fa6402-0e0b-423c-982d-f83ad55de658.jpg?v=1787100759","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-12-enclosure-prodigy-nb3-12","provider":"Audio Intensity","version":"1.0","type":"link"}