{"product_id":"performance-optimized-wedge-wide-sealed-quad-8-enclosure-rockford-fosgate-p3sd2-8","title":"Performance Optimized Wedge Wide Sealed Quad 8\" Enclosure | Rockford Fosgate P3SD2-8","description":"\u003cdiv class=\"po-wrap\"\u003e\n\u003cstyle\u003e\n.po-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.8;color:#1e293b;max-width:1200px;margin:0 auto;background:#fff}\n.po-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-hero .po-title{font-size:2.6em;font-weight:800;text-transform:uppercase;letter-spacing:2px;margin:0 0 10px 0;color:#fff}\n.po-hero .po-subtitle{font-size:1.2em;font-weight:300;opacity:.9;margin:0 0 30px 0}\n.po-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px}\n.po-badge{background:rgba(184,115,51,.2);border:1px solid #b87333;color:#d99058;padding:8px 20px;border-radius:20px;font-size:.9em;font-weight:600;letter-spacing:.5px}\n.po-section{padding:50px 40px;border-bottom:1px solid #e2e8f0;background:#fff}\n.po-section:nth-child(even){background:#fef3e7}\n.po-section h2{color:#8b5a2b;font-size:2em;font-weight:700;margin:0 0 20px 0;padding-bottom:12px;border-bottom:3px solid #b87333}\n.po-section h3{color:#0f172a;font-size:1.4em;font-weight:600;margin:30px 0 15px 0}\n.po-section p{font-size:1.05em;color:#334155;margin-bottom:18px}\n.po-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:30px 0}\n.po-card{background:#fff;border:1px solid #e2e8f0;border-top:4px solid #b87333;padding:25px;border-radius:4px}\n.po-card h4{color:#8b5a2b;font-size:1.15em;font-weight:700;margin:0 0 12px 0;text-transform:uppercase;letter-spacing:1px}\n.po-card p{font-size:.98em;color:#475569;margin:0}\n.po-highlight{background:#fef3e7;border-left:4px solid #b87333;padding:25px 30px;margin:30px 0;border-radius:4px}\n.po-highlight p{color:#1e293b;margin:0;font-size:1.05em}\n.po-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%);padding:60px 40px;text-align:center;color:#fff}\n.po-cta h2{font-size:2.2em;font-weight:700;margin:0 0 20px 0;color:#fff;border:none;padding:0}\n.po-cta p{font-size:1.15em;opacity:.92;max-width:800px;margin:0 auto 20px auto;color:#fff}\n@media (max-width:768px){.po-hero{padding:40px 20px}.po-hero .po-title{font-size:1.8em}.po-section{padding:30px 20px}.po-section h2{font-size:1.6em}.po-grid{grid-template-columns:1fr}.po-cta{padding:40px 20px}.po-cta h2{font-size:1.6em}}\n\u003c\/style\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge Wide | Quad Rockford Fosgate P3SD2-8\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eQuad 8\" Sealed Wedge Enclosure | Built for SUV Cargo Floors\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.418 ft3 Net per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e1.67 ft3 Net Total\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 1.10\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e2 Sealed Chambers\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e44\" x 13\" x 7.39\/12.12\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eFour Rockford Fosgate P3SD2-8 in a 44 Inch Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eThe wide wedge is a fixed SUV platform: 44 inches across and 13 tall, built to span a cargo floor against the rear seat. Depth is the only dimension that moves, and it is solved for the driver. Here it runs 7.39 in at the top to 12.12 in at the base.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.418 cubic feet net per driver on Rockford Fosgate's published Fs 38.0 Hz, Qts 0.720 and Vas 15.8 liters: Qtc 1.100, system resonance 58.1 Hz, half power 43.9 Hz. The maker's recommended sealed size is 0.21 cubic feet per driver; this cabinet stops at 0.418, where Qtc reaches 1.1, so it stays compact without going past a pronounced lift near resonance, 1.8 dB above flat.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Chambers, Two Drivers Each\u003c\/h2\u003e\n\u003cp\u003eA bonded full-height 3\/4 inch MDF divider splits the cabinet into two sealed chambers of 0.836 cubic feet net. Each chamber carries two drivers, so each driver works into 0.418 cubic feet; both drivers in a chamber see the same pressure, which is why they must be a matched pair. Two pre-wired terminal cups, side mounted, one per chamber; each cup feeds the two drivers in its chamber.\u003c\/p\u003e\n\u003cp\u003eThe four 8.72 in frames sit in one row across the 44 inch face, two to each chamber, with the cutouts held clear of the sides and the center divider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eCargo-Floor Wedge Design\u003c\/h2\u003e\n\u003cp\u003eThe woofers mount on the vertical face and fire rearward toward the liftgate. The raked face goes against the rear seat back.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eRaked Face Matches the Seat\u003c\/h4\u003e\n\u003cp\u003eA 20 degree rear panel follows the lean of a rear seat back.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003e44 Inches Across\u003c\/h4\u003e\n\u003cp\u003eBuilt to span a cargo floor. Measure between the rear wheel wells.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003e13 Inches Tall\u003c\/h4\u003e\n\u003cp\u003eCheck it against your cargo cover and rear glass before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003e12.12 Inches Deep at the Base\u003c\/h4\u003e\n\u003cp\u003eMeasure the cargo floor before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eEngineered for the Rockford Fosgate P3SD2-8\u003c\/h2\u003e\n\u003cp\u003eHalf power lands at 43.9 Hz anechoic, before cabin gain. Rockford Fosgate publishes 0.040 cubic feet of driver displacement and it is taken out of the net figure for every driver.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers (Per Driver)\u003c\/h3\u003e\n\u003ctable class=\"df-tier\"\u003e\n\u003ctr\u003e\n\u003cth\u003eDriver\u003c\/th\u003e\n\u003cth\u003eSystem Qtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP3SD2-8\u003c\/td\u003e\n\u003ctd\u003eQtc 1.100\u003c\/td\u003e\n\u003ctd\u003e58.1 Hz\u003c\/td\u003e\n\u003ctd\u003e43.9 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eEach opening is cut to 7.130 in for the 8.72 in frame. The rear panel rakes 20 degrees, so the cavity deepens from 7.39 in at the top to 12.12 in at the base, and the 2.66 in deep motor clears it with 3.64 in to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWhat the Numbers Rest On\u003c\/h2\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n\u003cp\u003ePremium 3\/4 in MDF throughout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n\u003cp\u003eCNC cut V-grooves at every fold, sides and dividers seated in dados.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eDouble-Layer 1.5\" Front Baffle\u003c\/h4\u003e\n\u003cp\u003eTwo bonded 3\/4 in MDF sheets at the driver face, the outer layer machined as a flush recess.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eRockford Fosgate's Own Parameters\u003c\/h4\u003e\n\u003cp\u003eFs 38.0 Hz, Qts 0.720, Qes 0.837, Qms 5.000, Vas 15.8 L, Sd 220 cm2, Xmax 8 mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring Four Rockford Fosgate P3SD2-8 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eEach P3SD2-8 has two 2 ohm voice coils, 4 ohms in series or 1 ohm in parallel. Wire every driver's coils in series. With the two drivers in each chamber in parallel and the two cups in parallel, the four present 1 ohm to a mono amplifier. With the two drivers in each chamber in series and the two cups in parallel, they present 4 ohms. Use the lower load only on an amplifier rated stable there. \u003c\/p\u003e\n\u003cp\u003eRockford Fosgate rates the driver at 150 watts RMS each, 600 across all four. Recommended amplifier: 70 to 100 W RMS per driver, 280 to 400 W RMS for the full set of 4. Travel, not heat, sets the top: the cone reaches Xmax at 109 W per driver with a 25 Hz subsonic set, under the 150 W rating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n\u003cp\u003eCut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet with the gloss black acrylic baffle insert, two side-mounted pre-wired terminal cups, 12 gauge OFC. Polyfill wall lining installed in every chamber. Threaded inserts at every mounting location, stainless machine screws in the box. 1 year limited warranty. Enclosure only, the drivers are purchased separately. Call or text 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eQuad Rockford Fosgate P3SD2-8: 44 Inch SUV Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003e0.418 cubic feet net per driver at Qtc 1.100, F3 43.9 Hz, cut direct fit and built to order in Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Black","offer_id":47357571661913,"sku":"PO 8Q-S W P3S BB","price":389.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":47357571760217,"sku":"PO 8Q-S W P3S B","price":369.99,"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_a4655176-bc87-4d6f-bccd-e71f21a0eaa1.jpg?v=1790824218","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-wide-sealed-quad-8-enclosure-rockford-fosgate-p3sd2-8","provider":"Audio Intensity","version":"1.0","type":"link"}