{"product_id":"performance-optimized-wedge-sealed-dual-15-enclosure-stereo-integrity-sql-15","title":"Performance Optimized Wedge Sealed Dual 15\" Enclosure | Stereo Integrity SQL-15","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 | Stereo Integrity SQL-15 Dual\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 15\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e2.00 ft3 Net Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e4.00 ft3 Net Total\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.82\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eDual Chamber Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e37.5\" x 18\" x 13.20\/19.74\"\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\u003eA Pair of Stereo Integrity SQL-15s in a Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eTwo 3 inch dual voice coil drivers on 20.3 T-m motors, 26 mm of one-way travel each and 1000 watts RMS apiece, on the largest cone Stereo Integrity puts in the SQL line.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eTwo isolated chambers at 2.00 cubic feet net each, 2.195 cu ft gross before the driver's 0.160 cu ft displacement. Neither woofer loads against the other.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eBoth SQL-15s mount on the vertical trunk-lid-side face and fire rearward into the trunk cavity.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n\u003cp\u003eAngled face matches the roughly 20 degree factory seat lean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk-Lid-Side Face Fires the Woofers\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, both cones firing rearward into the trunk cavity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eIsolated Dual Chambers\u003c\/h4\u003e\n\u003cp\u003eA full 3\/4 in center divider. Each driver sees its own sealed 2.00 cu ft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTrunk Cavity Loading\u003c\/h4\u003e\n\u003cp\u003eThe trunk acts as an acoustic extension for a smoother presentation.\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 Stereo Integrity SQL-15\u003c\/h2\u003e\n\u003cp\u003eAt 2.00 cubic feet net per chamber each SQL-15 runs a system Qtc of \u003cstrong\u003e0.816\u003c\/strong\u003e with resonance at 47.2 Hz. That is a well damped alignment. Half power lands at 41.8 Hz anechoic, before any cabin gain.\u003c\/p\u003e\n\u003cp\u003eGoing larger buys almost nothing here. A 3.90 cu ft chamber drops Qtc to 0.707 and moves F3 less than one hertz, so 2.00 is the design point rather than a compromise.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eQtc 0.816 · fc 47.2 Hz · F3 41.8 Hz anechoic · computed from Qts 0.57, Vas 59.4 L, Fs 33.0 Hz\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 14.17 in, two cutouts on 17.875 in centers. Driver mounting depth 7.400 in required. Stereo Integrity does not publish a bolt circle for the SQL-15, so this baffle ships undrilled with a threaded insert kit. The woofer locates its own pattern from the supplied screws, you drill those holes to 13\/64 in and press the hurricane nuts in from the baffle backside. Inserts, screws, screw key and drill bit are all included.\u003c\/p\u003e\n\u003ch3\u003eExternal Dimensions\u003c\/h3\u003e\n\u003cp\u003e37.50 in wide · 18.00 in tall · 13.20 in deep at the top, 19.74 in at the floor\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003ePerformance Series Construction, Driver-Specific Tuning\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 panel intersection, sides 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, with a dadoed cross brace behind each woofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eTwo Pre-Wired Terminal Cups\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite, side mounted, one per chamber, 12 gauge OFC pre-wired to each driver position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring a Pair of SQL-15s to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe SQL-15 comes as a dual 2 ohm or a dual 4 ohm. A pair of D2 woofers with each driver in series and the two drivers in parallel lands at \u003cstrong\u003e2 ohms\u003c\/strong\u003e. A pair of D4 the same way lands at 4 ohms, or 1 ohm with all four coils in parallel.\u003c\/p\u003e\n\u003cp\u003ePower handling is 1000 watts RMS per driver, 2000 watts for the pair. Aim for roughly 1400 to 2000 watts at the final wired impedance.\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. 1 year limited warranty. Enclosure only, the Stereo Integrity SQL-15 drivers are purchased separately. Call 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eTwo Stereo Integrity SQL-15s in a Rear-Firing Wedge\u003c\/h2\u003e\n\u003cp\u003e2.00 cubic feet net per chamber at Qtc 0.82, F3 41.8 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":"None","offer_id":44881719722073,"sku":"PO 15D-S W SQL B","price":489.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":44881719754841,"sku":"PO 15D-S W SQL BB","price":509.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_15D-S_W_SQL_Front.jpg?v=1789197850","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-sealed-dual-15-enclosure-stereo-integrity-sql-15","provider":"Audio Intensity","version":"1.0","type":"link"}