{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-prodigy-nb2-10","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | Prodigy NB2-10","description":"\u003cp\u003eThe \u003cstrong\u003ePerformance Optimized Down Fire Sealed Dual 10\" Enclosure for the Prodigy NB2-10D4\u003c\/strong\u003e is a two-chamber sealed cabinet that lands at \u003cstrong\u003eQtc 0.801 per driver\u003c\/strong\u003e, above the maximally flat reference, and does it in the same cabinet height as the single-driver version.\u003c\/p\u003e\u003cp\u003eEach \u003cstrong\u003eProdigy NB2-10D4\u003c\/strong\u003e is a dual 4-ohm subwoofer rated 350 watts RMS and 700 watts peak, with 14mm of one-way Xmax at 70% BL. Across the pair that is \u003cstrong\u003e700 watts RMS combined\u003c\/strong\u003e. A 2.0 inch four-layer copper voice coil on a black aluminum former, double-stacked magnet motor, reinforced paper cone, and cotton-blend spider with tinsel leads stitched to the spider to eliminate the ticking that unstitched leads develop at high excursion.\u003c\/p\u003e\u003cp\u003eThis enclosure follows the Proline X standing design rule for dual sealed builds: \u003cstrong\u003etwo fully separate chambers\u003c\/strong\u003e divided by a bonded full-height 3\/4 inch MDF panel. Two drivers sharing one sealed volume interact acoustically, with each driver's compression phase becoming the other's pressure environment, which smears transient response and blurs the alignment each would have on its own. Separate chambers eliminate that entirely.\u003c\/p\u003e\u003cp\u003eEach chamber gives \u003cstrong\u003e0.52 cubic feet net per driver\u003c\/strong\u003e, producing \u003cstrong\u003eQtc 0.801 with Fc at 46.7 Hz and a predicted F3 of 47.9 Hz\u003c\/strong\u003e. Qtc 0.707 is the maximally flat sealed alignment that box design textbooks target. This enclosure lands at 0.801.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHere is the interesting part.\u003c\/strong\u003e The NB2-10D4 mounts 5.625 inches deep, which forces a minimum internal height of 5 inches regardless of how the cabinet is divided. Because that clearance requirement does not change when you split the box into two chambers, \u003cstrong\u003ethis dual is exactly the same height as the single\u003c\/strong\u003e at 7.25 inches. You get a second driver, double the cone area, and a better alignment for no additional cabinet height at all.\u003c\/p\u003e\u003cp\u003eThe per-chamber volume also lands closer to Prodigy's own 0.65 sealed recommendation than the single-driver cabinet manages, since halving the width brings the forced volume back down toward their target.\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 \u003cstrong\u003edouble-layer 1.5 inch front baffles\u003c\/strong\u003e at both driver positions with the outer layer machined as a flush recess. Corners are square on Down Fire cabinets. Both drivers fire down into the floor, and \u003cstrong\u003eone side-mounted\u003c\/strong\u003e Proline X ABS\/carbon fiber composite terminal cup serves both chambers, fed in parallel to both driver positions with 12 gauge OFC.\u003c\/p\u003e\u003cp\u003eBring your own pair of Prodigy NB2-10D4 subwoofers. Each is dual 4-ohm, so you set your final impedance at the drivers. Wire both drivers identically.\u003c\/p\u003e\u003cp\u003eManufactured in Tullahoma, Tennessee. 1-year enclosure warranty.\u003c\/p\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540544450649,"sku":"PO 10D-S DF NB2","price":279.99,"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_00bd3ad6-125c-48b6-8b70-5f86de6d1e66.jpg?v=1787116987","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-10-enclosure-prodigy-nb2-10","provider":"Audio Intensity","version":"1.0","type":"link"}