{"product_id":"performance-optimized-down-fire-sealed-dual-10-enclosure-jl-audio-10w6v3-d4","title":"Performance Optimized Down Fire Sealed Dual 10\" Enclosure | JL Audio 10W6v3-D4","description":"\u003cstyle\u003e.df-wrap{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#d6d3d1;max-width:1100px;margin:0 auto;background:#0c0a09}.df-wrap *{box-sizing:border-box}.df-hero{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 100%);padding:54px 36px;text-align:center;color:#fff}.df-hero h2{font-size:2.3em;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;margin:0 0 12px;color:#fff}.df-hero p{font-size:1.1em;font-weight:300;opacity:.93;margin:0 0 22px;color:#d6d3d1}.df-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}.df-badge{background:rgba(184,115,51,.18);border:1px solid #b87333;color:#e8b98d;padding:7px 16px;border-radius:18px;font-size:.8em;font-weight:600}.df-stats{display:flex;flex-wrap:wrap;background:#1c1917}.df-stat{flex:1 1 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td{border-bottom:none}.df-opt td{background:#14532d;color:#fff;font-weight:600}.df-char{display:block;font-size:.78em;color:#a8a29e;font-weight:400;margin-top:2px}.df-opt .df-char{color:#86efac}.df-graph{background:#0c0a09;border:1px solid #44403c;border-radius:8px;padding:14px;margin:18px 0}.df-graph-title{font-size:.78em;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:#a8a29e;margin:0 0 10px}.df-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.df-legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#a8a29e}.df-sw{width:22px;height:3px;border-radius:2px;display:inline-block}.df-note{background:#292524;border:1px solid #44403c;border-radius:8px;padding:14px 16px;margin-top:6px}.df-note p{margin:0;color:#d6d3d1;font-size:13.5px;line-height:1.6}.df-link{color:#d99058;text-decoration:underline}.df-cta{background:linear-gradient(135deg,#0c0a09 0%,#5c3317 100%);padding:40px 36px;text-align:center;color:#fff}.df-cta h3{color:#fff;font-size:1.4em;margin:0 0 10px;border:none;padding:0}.df-cta p{opacity:.92;margin:0 auto;max-width:640px;color:#d6d3d1}@media(max-width:600px){.df-hero h2{font-size:1.7em}.df-section,.df-enc,.df-cta,.df-hero{padding-left:20px;padding-right:20px}}\u003c\/style\u003e\n\u003cdiv class=\"df-wrap\"\u003e\n\u003cdiv class=\"df-hero\"\u003e\n\u003ch2\u003eProline X PO Down Fire Dual 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for a pair of JL Audio 10W6v3-D4\u003c\/p\u003e\n\u003cdiv class=\"df-badges\"\u003e\n\u003cspan class=\"df-badge\"\u003eV-Groove and Dado\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eLangboard Elite MDF\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003e1.16 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eSeparate Chambers\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stats\"\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e1.16\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net total\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.797\u003c\/span\u003e\u003cspan class=\"l\"\u003eQtc per chamber\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e42.1 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e8.5625 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet height\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around a Pair of 10W6v3-D4\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. Both baffle positions are bored to the 10W6v3-D4's \u003cstrong\u003e9.02 inch cutout\u003c\/strong\u003e, 229mm to JL's spec, and the internal height is set by the driver's \u003cstrong\u003e6.89 inch mounting depth\u003c\/strong\u003e plus the 0.50 inches of pole vent clearance JL explicitly requires behind the motor. The frame measures 10.5 inches overall with a 6.3 inch magnet, so this is a large motor in a low cabinet.\u003c\/p\u003e\n\u003cp\u003eThe W6v3 is JL's top tier automotive subwoofer platform, carrying six US patents covering motor and suspension design. Each driver is a dual 4 ohm voice coil rated \u003cstrong\u003e600 watts RMS continuous\u003c\/strong\u003e with \u003cstrong\u003e19mm of one way linear excursion\u003c\/strong\u003e, the highest Xmax figure of any driver in the Proline X Down Fire line. Across the pair that is 1200 watts RMS combined and 98.6 square inches of piston area. Output at low frequencies is cone area multiplied by excursion, and that travel is where a 10 moves air like something larger.\u003c\/p\u003e\n\u003cp\u003ePublished parameters are Fs 30.12 Hz, Qts 0.513 and Vas 0.821 cubic feet per driver, with sensitivity at 82.7 dB and 6.452 ohms Re in series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eWe build this cabinet at \u003cstrong\u003e0.58 cubic feet net per chamber, 1.16 cubic feet net total\u003c\/strong\u003e, from 1.32 gross, after panel thickness, the chamber divider, perimeter bracing and each driver's published 0.078 cubic feet of displacement are accounted for. That produces \u003cstrong\u003eQtc 0.797, Fc 46.8 Hz and a predicted F3 of 42.1 Hz\u003c\/strong\u003e per driver.\u003c\/p\u003e\n\u003cdiv class=\"df-highlight\"\u003e\u003cp\u003e\u003cstrong\u003eTrue net, not marketing net.\u003c\/strong\u003e Internal volume is calculated from the machined cavity dimensions and the driver's published displacement, not estimated from external dimensions minus wall thickness.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eJL Audio recommends 0.55 cubic feet net per 10W6v3-D4 and publishes the resulting alignment as Qtc 0.8099, Fc 47.55 Hz and F3 42.27 Hz. Our figures land \u003cstrong\u003ewithin two tenths of a hertz of theirs\u003c\/strong\u003e, which is the closest agreement this program has produced with any manufacturer, and the marginal extra volume moves the alignment slightly toward the better damped side.\u003c\/p\u003e\n\u003cp\u003eWhat makes that agreement notable is that we did not target it. Cabinet height here is set by driver depth, not by volume. Take 6.89 inches of mounting depth, subtract the 3\/4 inch recovered by the flush recess in each outer baffle layer, subtract the 3\/8 inch milled relief behind each magnet, then honor JL's half inch pole vent clearance. Minimum internal height works out to 6.3125 inches, an 8.5625 inch external cabinet. Split that into two chambers and each driver ends up on JL's own recommended airspace through pure fitment geometry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eDown Fire Construction\u003c\/h3\u003e\n\u003cp\u003eCut with V-groove and dado joinery on our ShopSabre routers from Langboard Elite 3\/4 inch MDF, a dense 48.5 lb\/ft³ board with a 200 psi internal bond and 410,000 psi MOE. Every panel joint is a machined interlocking groove that mechanically locks before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing ties the panels together, which matters with two 600 watt drivers bolted to the same cabinet. Polyfill is pre-installed in each chamber, and both drivers land on 8\/32 threaded inserts with two sets of stainless machine screws included. External dimensions are \u003cstrong\u003e30 inches wide by 15 inches deep by 8.5625 inches high\u003c\/strong\u003e, measured in the down fire position, at 40 pounds.\u003c\/p\u003e\n\u003cp\u003eBoth drivers fire down into the floor. The sealed rolloff meets rising cabin gain below 60 Hz, so in-car response extends well below the anechoic figure.\u003c\/p\u003e\n\u003cdiv class=\"df-grid\"\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eDouble Baffle, Flush Recess\u003c\/h4\u003e\n\u003cp\u003eFront baffles are \u003cstrong\u003e1.5 inches\u003c\/strong\u003e at both driver positions, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so each driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, and a 3\/8 inch relief is milled behind each motor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite cup serves both chambers, with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e to both driver positions in parallel. Side mounted so it stays accessible with the baffles facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSeparate Chambers\u003c\/h4\u003e\n\u003cp\u003eA full height bonded \u003cstrong\u003e3\/4 inch MDF divider\u003c\/strong\u003e gives each driver its own 0.58 cubic feet and its own polyfill. Two drivers sharing one volume interact acoustically, each one's compression stroke becoming the pressure environment the other works against, which smears transients and blurs the alignment either would have alone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ENCLOSURE PERFORMANCE SLOT --\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePower and Warranty\u003c\/h3\u003e\n\u003cp\u003eJL Audio rates each 10W6v3-D4 at \u003cstrong\u003e600 watts RMS continuous\u003c\/strong\u003e, so \u003cstrong\u003e1200 watts RMS combined\u003c\/strong\u003e across the pair. Each driver uses JL's terminal jumper system: both voice coils must be connected for the driver to operate, configured either in parallel for 2 ohms per driver, which is the factory setting, or in series for 8 ohms. Wire both drivers identically, then verify the resulting load through the shared cup against your amplifier's minimum stable impedance.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own pair of JL Audio 10W6v3-D4 subwoofers; the drivers are purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-cta\"\u003e\n\u003ch3\u003eCut for the Driver, Not the Catalog\u003c\/h3\u003e\n\u003cp\u003eCutouts, internal height, chamber divider and JL's specified pole vent clearance are machined for this one driver at both positions, then built one at a time in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44540850864217,"sku":"PO 10D-S DF W6","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_1f08b057-2625-4528-bcb6-1076a6256119.jpg?v=1787119001","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-dual-10-enclosure-jl-audio-10w6v3-d4","provider":"Audio Intensity","version":"1.0","type":"link"}