{"product_id":"performance-optimized-down-fire-sealed-10-enclosure-prodigy-nb2-10","title":"Performance Optimized Down Fire Sealed 10\" Enclosure | Prodigy NB2-10","description":"\u003cp\u003eThe \u003cstrong\u003ePerformance Optimized Down Fire Sealed 10\" Enclosure for the Prodigy NB2-10D4\u003c\/strong\u003e is a sealed cabinet built around Prodigy's daily-driver 10 inch subwoofer, and it happens to produce \u003cstrong\u003ethe best-damped alignment in the entire Proline X Down Fire line\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003eProdigy NB2-10D4\u003c\/strong\u003e is a dual 4-ohm subwoofer rated 350 watts RMS and 700 watts peak, with \u003cstrong\u003e14mm of one-way Xmax at 70% BL\u003c\/strong\u003e. A 2.0 inch four-layer copper voice coil on a black aluminum former, double-stacked magnet motor, reinforced paper cone, cotton-blend spider with tinsel leads stitched to the spider, and a dual cooling system using a center pole vent plus radial backplate holes. Mounting depth is 5.625 inches.\u003c\/p\u003e\u003cp\u003eThe 0.96 cubic foot net volume produces \u003cstrong\u003eQtc 0.640, Fc 42.7 Hz, and a predicted F3 of 47.2 Hz\u003c\/strong\u003e. That Qtc is the lowest of any enclosure in this program, and it is genuinely excellent territory: below unity, tight and controlled, with the shallow rolloff slope and low group delay that a well-damped sealed alignment gives you.\u003c\/p\u003e\u003cp\u003eWorth explaining how it got there, because it was not chosen. The NB2-10D4 mounts 5.625 inches deep, which is substantially deeper than the shallow drivers most Down Fire cabinets are built around. On our double baffle the outer 3\/4 inch layer is machined as a flush recess and the driver bolts to the inner layer, and we mill a 3\/8 inch relief into the opposite panel behind the magnet, but even after both of those the minimum internal height lands at 5 inches. That works out to 0.96 net.\u003c\/p\u003e\u003cp\u003eProdigy recommends 0.65 cubic feet sealed. This cabinet cannot physically be that small with this driver in it. \u003cstrong\u003eThe oversizing is a fitment consequence, and it lands in your favor:\u003c\/strong\u003e Qtc drops from about 0.72 at Prodigy's figure to 0.640 here, which is better damped with slightly deeper extension.\u003c\/p\u003e\u003cp\u003eFiring down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, and in-car response extends well below the anechoic figure.\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 with the outer layer machined as a flush recess. Corners are square on Down Fire cabinets. The driver fires down into the floor with the terminal cup \u003cstrong\u003eside mounted\u003c\/strong\u003e. Terminal cup is our Proline X ABS\/carbon fiber composite pre-wired with 12 gauge OFC.\u003c\/p\u003e\u003cp\u003eBring your own Prodigy NB2-10D4. Dual 4-ohm, so you set your final impedance at the driver: 2 ohms with the coils in parallel, 8 ohms in series.\u003c\/p\u003e\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year enclosure warranty.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540537831513,"sku":"PO 10-S DF NB2","price":229.99,"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_91dc83c3-5496-43eb-947b-ef8ac2150b24.jpg?v=1787116986","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-10-enclosure-prodigy-nb2-10","provider":"Audio Intensity","version":"1.0","type":"link"}