{"product_id":"proline-x-performance-optimized-wedge-enclosure-fits-dual-kicker-solo-x-8-subwoofers","title":"Proline X Performance Optimized Wedge Enclosure | Fits Dual Kicker Solo X 8\" Subwoofers","description":"\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: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #8b5a2b 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; 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, 0.2); border: 1px solid #b87333; color: #d99058; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\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: #ffffff; 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: 0.98em; 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: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\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-wrap\"\u003e\n\u003cdiv class=\"po-hero\"\u003e\n\u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Dual Kicker Solo X 8\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 8\" Sealed Wedge Enclosure | Behind-Seat Wedge Design for Two Kicker Solo X L7X 8s\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e1.22 ft³ Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.51 ft³ Net \/ Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.707 Butterworth\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e25.25\" × 11.75\" × 10\/14.25\"\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\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\u003eTwo Kicker Solo X 8s in a Purpose-Built Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eThe Solo X L7X 8 packs Kicker's square-cone SoloX architecture and a high-mass ferrite motor into the 8-inch class, and a matched pair in properly solved sealed chambers delivers serious cone area with small-driver speed. This wedge was computed directly from Kicker's factory Thiele\/Small parameters, not adapted from a generic dual 8\" box.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eA 3\/4\" divider splits the box into two identical sealed chambers, 0.51 cu ft net each after driver displacement. That lands each dual 1-ohm Solo X 8 at a textbook Qtc of 0.707, the true Butterworth alignment, with dual 2-ohm drivers at 0.74 in the same chambers.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eBehind-Seat Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThis is a front-firing wedge built for behind-seat and rear-wall installs. The rear panel is vertical and sits flat against the cab wall; both woofers mount on the baffle, raked back 20 degrees to follow the seat lean.\u003c\/p\u003e\n\u003cdiv class=\"po-grid\"\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eVertical Rear Panel\u003c\/h4\u003e\n\u003cp\u003eSits flush against the cab back wall or trunk bulkhead, so the full footprint of the box goes to airspace instead of wasted gaps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003e20° Raked Baffle\u003c\/h4\u003e\n\u003cp\u003eMatches the lean of most factory seat backs and fires both Solo X drivers forward into the cabin instead of into the seat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eChambered and Braced\u003c\/h4\u003e\n\u003cp\u003eThe 3\/4\" dado-locked center divider isolates each driver in its own sealed chamber and doubles as a full-height brace, killing panel resonance in the largest spans.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eCarpet-Wrap Ledge\u003c\/h4\u003e\n\u003cp\u003eA recessed perimeter ledge terminates the carpet cleanly at the baffle edge for a finished, factory look.\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 Kicker Solo X 8\u003c\/h2\u003e\n\u003cp\u003eEach chamber is built to 0.51 cubic feet net, the airspace that puts the dual 1-ohm 49L7X81 exactly on the Butterworth alignment. Qtc 0.707 delivers the flattest response and tightest transient control a sealed enclosure can produce: no peaking, no overhang, bass that starts and stops with the recording. Dual 2-ohm 49L7X82 drivers run 0.74 in the same chambers, still squarely inside the accurate, musical zone. Because the chambers are identical, both drivers stay perfectly matched.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers (Per Driver)\u003c\/h3\u003e\n\u003cp\u003eDual 1-Ohm: Qtc 0.707 · Fc 54 Hz · F3 54 Hz — Dual 2-Ohm: Qtc 0.74 · Fc 54 Hz · F3 52.2 Hz\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eEach baffle opening is CNC-cut to 7-5\/16\" (Kicker spec). Mounting depth required is 7-15\/16\", cleared with margin at every point of the stroke, including breathing room for the vented motor. 8\/32 threaded inserts pressed into the baffle backside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eSealed Alignment Response\u003c\/h2\u003e\n\u003cp\u003ePredicted anechoic response of each Solo X 8 in its own 0.51 cu ft sealed chamber, computed from Kicker factory T\/S parameters. This enclosure ships without drivers, so both coil variants are plotted; they do not load the same chamber identically.\u003c\/p\u003e\n\u003csvg viewbox=\"0 0 700 330\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Sealed frequency response of the Kicker Solo X 8 in each chamber of this enclosure, both coil variants, with the minus 3 dB reference line\" style=\"width:100%;height:auto;background:#ffffff;border:1px solid #e2e8f0;border-radius:4px;\"\u003e\n\u003crect x=\"70\" y=\"20\" width=\"610\" height=\"240\" fill=\"#ffffff\"\u003e\u003c\/rect\u003e\n\u003cg stroke=\"#e2e8f0\" stroke-width=\"1\"\u003e\n\u003cline x1=\"70\" y1=\"20\" x2=\"70\" y2=\"260\"\u003e\u003c\/line\u003e\u003cline x1=\"177.4\" y1=\"20\" x2=\"177.4\" y2=\"260\"\u003e\u003c\/line\u003e\u003cline x1=\"312.7\" y1=\"20\" x2=\"312.7\" y2=\"260\"\u003e\u003c\/line\u003e\u003cline x1=\"401.9\" y1=\"20\" x2=\"401.9\" y2=\"260\"\u003e\u003c\/line\u003e\u003cline x1=\"496.4\" y1=\"20\" x2=\"496.4\" y2=\"260\"\u003e\u003c\/line\u003e\u003cline x1=\"603.8\" y1=\"20\" x2=\"603.8\" y2=\"260\"\u003e\u003c\/line\u003e\u003cline x1=\"680\" y1=\"20\" x2=\"680\" y2=\"260\"\u003e\u003c\/line\u003e\n\u003cline x1=\"70\" y1=\"20\" x2=\"680\" y2=\"20\"\u003e\u003c\/line\u003e\u003cline x1=\"70\" y1=\"68\" x2=\"680\" y2=\"68\"\u003e\u003c\/line\u003e\u003cline x1=\"70\" y1=\"116\" x2=\"680\" y2=\"116\"\u003e\u003c\/line\u003e\u003cline x1=\"70\" y1=\"164\" x2=\"680\" y2=\"164\"\u003e\u003c\/line\u003e\u003cline x1=\"70\" y1=\"212\" x2=\"680\" y2=\"212\"\u003e\u003c\/line\u003e\u003cline x1=\"70\" y1=\"260\" x2=\"680\" y2=\"260\"\u003e\u003c\/line\u003e\n\u003c\/g\u003e\n\u003cline x1=\"70\" y1=\"92\" x2=\"680\" y2=\"92\" stroke=\"#94a3b8\" stroke-width=\"1.5\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"675\" y=\"87\" text-anchor=\"end\" font-family=\"Helvetica Neue, Arial, sans-serif\" font-size=\"11\" fill=\"#64748b\"\u003e−3 dB\u003c\/text\u003e\n\u003cpath d=\"M70,206.9 L82,200.4 L95,193.9 L107,187.5 L120,181.1 L132,174.7 L145,168.4 L157,162.2 L170,156.0 L182,149.8 L194,143.8 L207,137.9 L219,132.1 L232,126.5 L244,121.1 L257,115.8 L269,110.8 L282,106.1 L294,101.6 L307,97.4 L319,93.6 L331,90.0 L344,86.8 L356,84.0 L369,81.4 L381,79.2 L394,77.3 L406,75.6 L419,74.2 L431,73.0 L443,72.0 L456,71.1 L468,70.4 L481,69.9 L493,69.4 L506,69.0 L518,68.7 L531,68.5 L543,68.3 L556,68.2 L568,68.0 L580,68.0 L593,67.9 L605,67.8 L618,67.8 L630,67.8 L643,67.8 L655,67.8 L668,67.8 L680,67.8\" fill=\"none\" stroke=\"#0f172a\" stroke-width=\"2.5\"\u003e\u003c\/path\u003e\n\u003cpath d=\"M70,206.4 L82,200.0 L95,193.6 L107,187.3 L120,181.0 L132,174.7 L145,168.5 L157,162.4 L170,156.3 L182,150.3 L194,144.5 L207,138.7 L219,133.1 L232,127.7 L244,122.4 L257,117.4 L269,112.5 L282,107.9 L294,103.6 L307,99.6 L319,95.8 L331,92.4 L344,89.2 L356,86.4 L369,83.9 L381,81.6 L394,79.6 L406,77.9 L419,76.4 L431,75.1 L443,74.0 L456,73.0 L468,72.2 L481,71.5 L493,70.9 L506,70.5 L518,70.0 L531,69.7 L543,69.4 L556,69.2 L568,69.0 L580,68.8 L593,68.7 L605,68.6 L618,68.5 L630,68.4 L643,68.3 L655,68.3 L668,68.2 L680,68.2\" fill=\"none\" stroke=\"#b87333\" stroke-width=\"3\"\u003e\u003c\/path\u003e\n\u003cg font-family=\"Helvetica Neue, Arial, sans-serif\" font-size=\"11\" fill=\"#64748b\"\u003e\n\u003ctext x=\"70\" y=\"276\" text-anchor=\"middle\"\u003e20\u003c\/text\u003e\u003ctext x=\"177.4\" y=\"276\" text-anchor=\"middle\"\u003e30\u003c\/text\u003e\u003ctext x=\"312.7\" y=\"276\" text-anchor=\"middle\"\u003e50\u003c\/text\u003e\u003ctext x=\"401.9\" y=\"276\" text-anchor=\"middle\"\u003e70\u003c\/text\u003e\u003ctext x=\"496.4\" y=\"276\" text-anchor=\"middle\"\u003e100\u003c\/text\u003e\u003ctext x=\"603.8\" y=\"276\" text-anchor=\"middle\"\u003e150\u003c\/text\u003e\u003ctext x=\"680\" y=\"276\" text-anchor=\"middle\"\u003e200\u003c\/text\u003e\n\u003ctext x=\"62\" y=\"24\" text-anchor=\"end\"\u003e+6\u003c\/text\u003e\u003ctext x=\"62\" y=\"72\" text-anchor=\"end\"\u003e0\u003c\/text\u003e\u003ctext x=\"62\" y=\"120\" text-anchor=\"end\"\u003e−6\u003c\/text\u003e\u003ctext x=\"62\" y=\"168\" text-anchor=\"end\"\u003e−12\u003c\/text\u003e\u003ctext x=\"62\" y=\"216\" text-anchor=\"end\"\u003e−18\u003c\/text\u003e\u003ctext x=\"62\" y=\"264\" text-anchor=\"end\"\u003e−24\u003c\/text\u003e\n\u003ctext x=\"375\" y=\"296\" text-anchor=\"middle\" letter-spacing=\"1\"\u003eFREQUENCY · Hz\u003c\/text\u003e\n\u003ctext x=\"20\" y=\"140\" text-anchor=\"middle\" transform=\"rotate(-90 20 140)\" letter-spacing=\"1\"\u003eLEVEL · dB\u003c\/text\u003e\n\u003c\/g\u003e\n\u003cg font-family=\"Helvetica Neue, Arial, sans-serif\" font-size=\"12\"\u003e\n\u003crect x=\"80\" y=\"308\" width=\"18\" height=\"4\" fill=\"#b87333\"\u003e\u003c\/rect\u003e\u003ctext x=\"104\" y=\"313\" fill=\"#334155\"\u003eD1 · Qtc 0.707, Fc 54 Hz, F3 54 Hz\u003c\/text\u003e\n\u003crect x=\"330\" y=\"308\" width=\"18\" height=\"4\" fill=\"#0f172a\"\u003e\u003c\/rect\u003e\u003ctext x=\"354\" y=\"313\" fill=\"#334155\"\u003eD2 · Qtc 0.74, Fc 54 Hz, F3 52.2 Hz\u003c\/text\u003e\n\u003c\/g\u003e\n\u003c\/svg\u003e\n\u003cp\u003eThe dashed line marks the half-power point. Roll-off below F3 is the gentle 12 dB\/octave slope characteristic of sealed alignments, which cabin gain in a real vehicle substantially fills in. Run the numbers yourself with our \u003ca href=\"\/pages\/sealed-box-calculator\"\u003esealed box calculator\u003c\/a\u003e.\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\" MDF panels milled to documented spec.\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. Dado joints lock the raked baffle, vertical rear panel, and center divider into the side walls.\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\" MDF sheets plus a trim layer at the driver mounting face. Two Solo X 8s put serious mechanical load into the baffle; it does not flex.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePre-Wired Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS\/carbon-fiber composite terminal cup, side-mounted, with 12 gauge OFC pre-wired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eFinish and Trim\u003c\/h2\u003e\n\u003ch3\u003ePlush Black Carpet\u003c\/h3\u003e\n\u003cp\u003eEvery enclosure ships wrapped in plush black automotive carpet, the standard finish for the PO Wedge line.\u003c\/p\u003e\n\u003ch3\u003eBlack Acrylic Insert\u003c\/h3\u003e\n\u003cp\u003eThe signature Proline X acrylic insert comes in black.\u003c\/p\u003e\n\u003ch3\u003eBox-Only\u003c\/h3\u003e\n\u003cp\u003eThis listing is box-only. Bring your own pair of Solo X 8s.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring Two Kicker Solo X 8s to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eKicker recommends 400-800 watts RMS per Solo X 8, so plan 800-1600 watts RMS of clean system power across the pair at your wired impedance. Match both drivers to the same coil configuration so the pair loads and wires symmetrically; sealed loading keeps cone travel controlled through the passband.\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\u003eManufactured in Tullahoma, Tennessee on our ShopSabre CNC equipment. 1-year limited warranty. Call or text 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eDual Kicker Solo X 8s: True Butterworth, Twice Over\u003c\/h2\u003e\n\u003cp\u003eTwo identical 0.51 cubic foot sealed chambers, solved from factory T\/S to land each Solo X 8 at Qtc 0.707. Double the cone area, the same flat, tight alignment, in a wedge that disappears behind the seat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44575779749977,"sku":"PO 8D-S W Solo X","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/proline-x-enclosure-x-series-fits-kicker-solo-x-8-subwoofer-dualsubwoofer-enclosuresproline-x-1023143.jpg?v=1774078266","url":"https:\/\/audiointensity.com\/products\/proline-x-performance-optimized-wedge-enclosure-fits-dual-kicker-solo-x-8-subwoofers","provider":"Audio Intensity","version":"1.0","type":"link"}