{"product_id":"performance-optimized-down-fire-sealed-10-enclosure-jl-audio-10tw1","title":"JL Audio 10TW1 Box: Sealed 10\" Down Fire Enclosure","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 200px;text-align:center;padding:26px 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class=\"df-hero\"\u003e\n\u003ch2\u003eProline X Performance Optimized Down Fire 10\" Sealed\u003c\/h2\u003e\n\u003cp\u003eCut and tuned for the JL Audio 10TW1 thin-line\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\"\u003e0.35 cu ft Net\u003c\/span\u003e\u003cspan class=\"df-badge\"\u003eCompact 6 Inch Cabinet\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\"\u003e0.35\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft net\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.927\u003c\/span\u003e\u003cspan class=\"l\"\u003esystem Qtc, -2 coil\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e48.3 Hz\u003c\/span\u003e\u003cspan class=\"l\"\u003eF3 rolloff, -2 coil\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e15.6 x 15 x 6 in\u003c\/span\u003e\u003cspan class=\"l\"\u003ecabinet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003ePerformance, Performance Optimized, and Micro\u003c\/h3\u003e\n\u003cp\u003eProline X builds three tiers of Down Fire enclosure. The difference is not finish or materials, it is whether the cabinet was designed for a category or for a driver, and how much of the fitting work is already done for you.\u003c\/p\u003e\n\u003cdiv class=\"df-tier\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"on\"\u003ePerformance Optimized\u003c\/th\u003e\n\u003cth\u003eMicro Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal. Accepts any subwoofer that clears the published cutout and mounting depth.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eWoofer specific. Cut for one named subwoofer, with cutout, mounting depth, magnet clearance and displacement drawn in CAD from that driver.\u003c\/td\u003e\n\u003ctd\u003eWoofer specific. Cut for one named subwoofer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFootprint\u003c\/td\u003e\n\u003ctd\u003eSized to the driver diameter. 24.5 by 13.5 inches on the 10 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eShared 30 by 15 inch platform on most builds, with cabinet height as the variable. A few drivers need a wider or deeper platform.\u003c\/td\u003e\n\u003ctd\u003eCompact per driver footprint. 21.5 by 14.5 inches on the 10 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eFront baffle\u003c\/td\u003e\n\u003ctd\u003eSingle, 3\/4 inch.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eDouble, 1.5 inch, outer layer machined as a flush recess.\u003c\/td\u003e\n\u003ctd\u003eDouble, 1.5 inch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eDriver mounting\u003c\/td\u003e\n\u003ctd\u003eSolid flange. You drill your own mounting holes.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003ctd\u003e8\/32 threaded inserts, stainless machine screws included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eJoinery\u003c\/td\u003e\n\u003ctd\u003eV-groove and dado, CNC cut.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eV-groove and dado, CNC cut, perimeter cross brace.\u003c\/td\u003e\n\u003ctd\u003eStack fab, dowel reinforced.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003ePublished alignment\u003c\/td\u003e\n\u003ctd\u003eModeled Qtc profiles across a range of drivers. No single response curve.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003eA real predicted Qtc and F3 for that exact driver, calculated from its own Thiele-Small parameters.\u003c\/td\u003e\n\u003ctd\u003eTarget alignment described in the listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eCarpet\u003c\/td\u003e\n\u003ctd\u003eGray standard, black optional.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003ePlush black.\u003c\/td\u003e\n\u003ctd\u003ePlush black.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"a\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited.\u003c\/td\u003e\n\u003ctd class=\"on\"\u003e1 year limited.\u003c\/td\u003e\n\u003ctd\u003e2 years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eFeet ship with every tier, uninstalled on purpose.\u003c\/strong\u003e Mount them where your floor wants them for a down fire install, or leave them off and run the cabinet front firing or up firing. The orientation is yours to choose.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"df-note\"\u003e\u003cp\u003e\u003cstrong\u003eThis page is a Performance Optimized enclosure.\u003c\/strong\u003e The airspace, the cutout and the cabinet height all come from the JL Audio 10TW1's own published numbers. A Performance box fits your subwoofer. A Performance Optimized box was built for it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eBuilt Around the 10TW1\u003c\/h3\u003e\n\u003cp\u003eNothing about this cabinet is generic. The baffle is bored to the 10TW1's \u003cstrong\u003e9.055 inch cutout\u003c\/strong\u003e, 230mm, and the internal height is set by the driver's \u003cstrong\u003e4.37 inch mounting depth\u003c\/strong\u003e, 111mm. The 10TW1 is JL's thin-line ten, built for installs that will not take a W-series motor, and it puts this cabinet at just 6 inches tall.\u003c\/p\u003e\n\u003cp\u003eIt is a single voice coil subwoofer, offered as the 2 ohm 10TW1-2 and the 4 ohm 10TW1-4, rated \u003cstrong\u003e300 watts RMS\u003c\/strong\u003e. JL describes its sealed enclosure requirement as extremely small, and the driver displaces just \u003cstrong\u003e0.047 cubic feet\u003c\/strong\u003e of the box it sits in.\u003c\/p\u003e\n\u003cp\u003ePublished Thiele-Small parameters for the 10TW1-2 are \u003cstrong\u003eFs 41.5 Hz, Qts 0.65, and Vas of 10.31 liters\u003c\/strong\u003e, 0.364 cubic feet. The 4 ohm 10TW1-4 is listed at \u003cstrong\u003eFs 38.1 Hz, Qts 0.60, Vas 12.2 liters\u003c\/strong\u003e. One set does not cover both coils, so both alignments are published below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-section\"\u003e\n\u003ch3\u003eNet Volume, Not Gross\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures \u003cstrong\u003e0.40 cubic feet gross\u003c\/strong\u003e and \u003cstrong\u003e0.35 cubic feet net\u003c\/strong\u003e after the driver's 0.047 cubic feet of displacement, panel thickness and bracing are subtracted. That is the \u003cstrong\u003e0.35 cubic feet JL Audio recommends\u003c\/strong\u003e for the 10TW1 in a sealed enclosure.\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\u003eHere is the chain. The driver needs 4.37 inches. The outer 3\/4 inch baffle layer is machined as a flush recess and the driver bolts to the inner layer, which recovers 0.75 inch. A 3\/8 inch relief milled into the opposite panel behind the magnet recovers a little more. Add the 0.5 inch minimum clearance required behind the motor and the minimum internal height lands at 3.75 inches, a 6 inch cabinet. With the height fixed by the driver, width is the dimension we solved: \u003cstrong\u003e15.625 inches\u003c\/strong\u003e across the 15 inch depth lands the cabinet on JL's 0.35 net. It is one of the few Performance Optimized builds that leaves our shared 30 inch platform, and it fits where a full-width box never would.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe alignment, stated plainly.\u003c\/strong\u003e At 0.35 net a 10TW1-2 sits at \u003cstrong\u003eQtc 0.927\u003c\/strong\u003e with \u003cstrong\u003eFc 59.2 Hz\u003c\/strong\u003e and a predicted \u003cstrong\u003eF3 of 48.3 Hz\u003c\/strong\u003e, and a 10TW1-4 at \u003cstrong\u003eQtc 0.895, Fc 56.8 Hz, F3 47.3 Hz\u003c\/strong\u003e. That is above the 0.707 maximally flat reference, so the response carries a little lift ahead of the rolloff: punchy and tight rather than flat, which is what JL tuned this driver to do in a small sealed box. Firing down into the floor, the 12 dB per octave rolloff meets rising cabin gain below 60 Hz.\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 the cabinet airtight under sustained pressure cycling. Corners are square on Down Fire cabinets.\u003c\/p\u003e\n\u003cp\u003ePerimeter cross-bracing carries the panels and polyfill is pre-installed. The driver lands on 8\/32 threaded inserts with stainless steel machine screws included, and every external dimension is stated as measured in the down fire position.\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\u003eThe front baffle is \u003cstrong\u003e1.5 inches\u003c\/strong\u003e, two bonded 3\/4 inch sheets, with the outer layer machined as a flush recess so the driver bolts to the inner layer. That recovers 3\/4 inch of internal clearance, which is the first half of fitting a 4.37 inch driver into a 6 inch cabinet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eSide-Mounted Terminal Cup\u003c\/h4\u003e\n\u003cp\u003eProline X ABS and carbon fiber composite cup with stainless hardware and copper ring terminals, pre-wired in \u003cstrong\u003e12 gauge OFC\u003c\/strong\u003e. Side mounted so it stays accessible with the baffle facing the floor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eMilled Magnet Relief\u003c\/h4\u003e\n\u003cp\u003eA \u003cstrong\u003e3\/8 inch deep relief\u003c\/strong\u003e is milled into the panel opposite the baffle so the motor clears, with 0.5 inch minimum maintained behind the magnet. That is the second half, and it is why this cabinet stands only 6 inches tall.\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 the 10TW1 at \u003cstrong\u003e300 watts RMS continuous\u003c\/strong\u003e. Run an amplifier matched to that rating and set gain carefully; a thin-line motor has less excursion in reserve than a W-series driver.\u003c\/p\u003e\n\u003cp\u003eWiring is straightforward: a single voice coil, so there is no series or parallel decision at the driver. The amplifier sees \u003cstrong\u003e2 ohms\u003c\/strong\u003e through the cup with the 10TW1-2, or 4 ohms with the 10TW1-4. Confirm your amplifier is comfortable at that load before setting gain.\u003c\/p\u003e\n\u003cp\u003eThe enclosure carries a 1 year limited warranty. Bring your own JL Audio 10TW1; the driver is 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\u003eOne cutout, one mounting depth, one milled relief, all of it set by the JL Audio 10TW1 and nothing else. Machined on ShopSabre CNC routers and 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":47855849767001,"sku":"PO 10-S DF TW1","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_10-S_DF_TW1_Front.jpg?v=1794614042","url":"https:\/\/audiointensity.com\/products\/performance-optimized-down-fire-sealed-10-enclosure-jl-audio-10tw1","provider":"Audio Intensity","version":"1.0","type":"link"}