{"product_id":"performance-optimized-wedge-wide-sealed-triple-12-enclosure-ground-zero-gzhw-30","title":"Performance Optimized Wedge Wide Sealed Triple 12\" Enclosure | Ground Zero GZHW 30","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 | Triple Ground Zero GZHW 30\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eTriple 12\" Sealed Wedge Enclosure | Built for SUV Cargo Floors\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.047 ft3 Net per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e3.14 ft3 Net Total\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.71\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e3 Sealed Chambers\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e44\" x 17\" x 9.74\/15.92\"\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\u003eThree Ground Zero GZHW 30 in a 44 Inch Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eThe wide wedge is a fixed SUV platform: 44 inches across and 17 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 9.74 in at the top to 15.92 in at the base.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e1.047 cubic feet net per driver on Ground Zero's published Fs 39.1 Hz, Qts 0.560 and Vas 17.6 liters: Qtc 0.707, system resonance 49.4 Hz, half power 49.4 Hz. That is maximally flat, the Butterworth target.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThree Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eTwo bonded full-height 3\/4 inch MDF dividers split the cabinet into three sealed chambers of 1.047 cubic feet net, one driver each, so no driver loads another. Three pre-wired terminal cups on the rear panel, one per chamber. The center chamber has no side wall, so all three cups go on the back for a matching set.\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\u003e17 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\u003e15.92 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 Ground Zero GZHW 30\u003c\/h2\u003e\n\u003cp\u003eHalf power lands at 49.4 Hz anechoic, before cabin gain. Ground Zero does not publish driver displacement, so an estimated 0.129 cubic feet per driver is taken out of the net figure.\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\u003eGZHW 30 \/ GZHW 30XSPL D1\u003c\/td\u003e\n\u003ctd\u003eQtc 0.707\u003c\/td\u003e\n\u003ctd\u003e49.4 Hz\u003c\/td\u003e\n\u003ctd\u003e49.4 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 11.180 in for the 12.4 in frame. The rear panel rakes 20 degrees, so the cavity deepens from 9.74 in at the top to 15.92 in at the base, and the 7.80 in deep motor clears it with 1.63 in to spare. Three woofers across the 44 inch face, one centered on each chamber.\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\u003eGround Zero's Own Parameters\u003c\/h4\u003e\n\u003cp\u003eFs 39.1 Hz, Qts 0.560, Qes 0.600, Qms 8.000, Vas 17.6 L, Sd 521 cm2, Xmax 22 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 Three Ground Zero GZHW 30 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eEach GZHW 30 \/ GZHW 30XSPL D1 has two 1 ohm voice coils, 2 ohms in series or 0.5 ohms in parallel. With each driver's coils in series and the three cups in parallel, the three present 0.67 ohms to a mono amplifier. With each driver's coils in parallel and the three in series, they present 1.5 ohms. Three drivers do not reach the round loads a pair does, so check the result against your amplifier's minimum stable impedance before powering up. \u003c\/p\u003e\n\u003cp\u003eGround Zero rates the driver at 1500 watts RMS each, 4500 across all three. Recommended amplifier: 1050 to 1500 W RMS per driver, 3,150 to 4,500 W RMS for the full set of 3.\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, three pre-wired terminal cups on the rear panel, 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\u003eTriple Ground Zero GZHW 30: 44 Inch SUV Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003e1.047 cubic feet net per driver at Qtc 0.707, F3 49.4 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":47357322231897,"sku":"PO 12T-S W GZHW30 BB","price":529.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":47357322264665,"sku":"PO 12T-S W GZHW30 B","price":509.99,"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_f2e4289d-5638-4a51-858e-6cc3b89351c5.jpg?v=1790817816","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-wide-sealed-triple-12-enclosure-ground-zero-gzhw-30","provider":"Audio Intensity","version":"1.0","type":"link"}