{"product_id":"jl-audio-12w3v3-dual-subwoofer-box","title":"Proline X PO 12D-S W JL W3V3 | Dual 12\" Sealed Wedge Subwoofer Enclosure | Built for JL Audio 12W3v3","description":"\u003cdiv class=\"pow-wrap\"\u003e\n\u003cstyle\u003e\n.pow-wrap{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;line-height:1.7;color:#cbd5e1 !important;}\n.pow-wrap p{color:#cbd5e1 !important;margin:0 0 14px 0;}\n.pow-wrap strong{color:#d99058 !important;}\n.pow-wrap a{color:#c68a4a !important;font-weight:700;text-decoration:underline;}\n.pow-hero{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%) !important;border-radius:8px;padding:32px 28px;margin-bottom:28px;}\n.pow-eyebrow{display:inline-block;color:#d99058 !important;font-size:0.72em;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;margin-bottom:10px;}\n.pow-hero h2{color:#ffffff !important;font-size:1.55em;font-weight:700;margin:0 0 12px 0;line-height:1.3;}\n.pow-hero p{color:#e2e8f0 !important;font-size:1.02em;margin:0;}\n.pow-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}\n.pow-badge{display:inline-block;background:rgba(184,115,51,0.18) !important;border:1px solid #b87333 !important;color:#eab784 !important;font-size:0.75em;font-weight:600;letter-spacing:0.04em;padding:5px 12px;border-radius:4px;}\n.pow-section{margin:30px 0;}\n.pow-section-alt{background:#111c30 !important;border:1px solid #3a2818 !important;border-radius:8px;padding:26px 24px;margin:30px 0;}\n.pow-wrap h3{color:#c68a4a !important;font-size:1.22em;font-weight:700;margin:0 0 14px 0;line-height:1.35;}\n.pow-wrap h4{color:#c68a4a !important;font-size:1.02em;font-weight:700;margin:0 0 10px 0;}\n.pow-highlight{background:#0f172a !important;border-left:4px solid #b87333 !important;padding:20px 22px;margin:28px 0;border-radius:0 6px 6px 0;}\n.pow-highlight h3{color:#c68a4a !important;margin:0 0 10px 0;font-size:1.1em;}\n.pow-highlight h3+h3{margin-top:18px;}\n.pow-highlight p{margin-bottom:10px;font-size:0.97em;color:#cbd5e1 !important;}\n.pow-highlight p:last-child{margin-bottom:0;}\n.pow-alert{background:#2f1c0d !important;border:1px solid #b87333 !important;border-radius:6px;padding:14px 18px;margin:22px 0;font-size:0.93em;}\n.pow-alert p{color:#eab784 !important;margin:0;}\n.pow-alert strong{color:#d99058 !important;}\n.pow-warn{background:#2b1a0b !important;border:2px solid #f59e0b !important;border-radius:8px;padding:20px 22px;margin:26px 0;}\n.pow-warn-label{display:inline-block;background:#f59e0b !important;color:#2b1a0b !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:4px 11px;border-radius:3px;margin-bottom:12px;}\n.pow-warn h3{color:#fbbf24 !important;margin:0 0 10px 0;}\n.pow-warn p{color:#fde68a !important;margin:0 0 10px 0;}\n.pow-warn p:last-child{margin-bottom:0;}\n.pow-warn strong{color:#fbbf24 !important;}\n.pow-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:24px 0;}\n@media(max-width:600px){.pow-card-grid{grid-template-columns:1fr;}}\n.pow-card{background:#1a2740 !important;border:1px solid #4a3520 !important;border-top:3px solid #b87333 !important;border-radius:6px;padding:22px;}\n.pow-card-label{display:inline-block;background:#b87333 !important;color:#2a1608 !important;font-size:0.68em;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:3px 10px;border-radius:3px;margin-bottom:10px;}\n.pow-card h4{margin:0 0 10px 0;}\n.pow-card-divider{height:2px;background:#b87333 !important;width:32px;margin-bottom:12px;border-radius:2px;}\n.pow-card p{font-size:0.93em;color:#b6c4d6 !important;margin:0;line-height:1.65;}\n.pow-card p strong{color:#d99058 !important;}\n.pow-table{width:100% !important;border-collapse:collapse;margin:22px 0;font-size:0.94em;}\n.pow-table th{background:#8b5a2b !important;color:#ffffff !important;text-align:left;padding:11px 14px;font-weight:700;font-size:0.9em;letter-spacing:0.04em;text-transform:uppercase;border-bottom:1px solid #3a2818 !important;}\n.pow-table td{padding:10px 14px;border-bottom:1px solid #3a2818 !important;color:#dbe4ef !important;background:#111c30 !important;}\n.pow-table tr:nth-child(even) td{background:#1a2740 !important;}\n.pow-table td:first-child{font-weight:600;color:#d99058 !important;width:30%;}\n.pow-chartbox{display:block !important;width:100% !important;max-width:100% !important;margin:22px 0 !important;}\n.pow-chart{display:block !important;width:100% !important;max-width:100% !important;height:auto !important;}\n.pow-cta{background:linear-gradient(135deg,#0f172a 0%,#8b5a2b 100%) !important;border-radius:8px;padding:28px 26px;margin:32px 0 0 0;text-align:center;}\n.pow-cta h3{color:#ffffff !important;margin:0 0 10px 0;}\n.pow-cta p{color:#e2e8f0 !important;margin:0;font-size:0.97em;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"pow-hero\"\u003e\n\u003cspan class=\"pow-eyebrow\"\u003eProline X | Performance Optimized Wedge\u003c\/span\u003e\u003ch2\u003eTwo 12W3v3s, Each in Its Own 1.250 Cubic Feet.\u003c\/h2\u003e\n\u003cp\u003eA dual chamber sealed wedge cut for the JL Audio 12W3v3 and nothing else. It sits in the trunk with the tall face against the back of the rear seat and the drivers firing rearward, using the length of the trunk instead of standing in the middle of it.\u003c\/p\u003e\n\u003cdiv class=\"pow-badges\"\u003e\n\u003cspan class=\"pow-badge\"\u003e1.250 CU FT NET PER DRIVER\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eDUAL CHAMBER\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eQTC 0.80 TO 0.90\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eTRUNK MOUNT, REAR FIRING\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003e1000W RMS COMBINED\u003c\/span\u003e\u003cspan class=\"pow-badge\"\u003eBUILT IN TULLAHOMA, TN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-warn\"\u003e\n\u003cspan class=\"pow-warn-label\"\u003eRead This First\u003c\/span\u003e\u003ch3\u003eThis Is Not a Down Fire Enclosure\u003c\/h3\u003e\n\u003cp\u003eThe wedge works in one orientation: tall face flat against the rear seat back, taper running out toward the trunk lid, drivers firing rearward. There are no feet, no baffle clearance gap, and \u003cstrong\u003eno down fire option on this cabinet\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is cut direct fit to the 12W3v3 at a 281mm opening. \u003cstrong\u003eA standard 12 will not fit\u003c\/strong\u003e, and would not see the correct airspace if it did.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eBuilt Backward From One Published Number\u003c\/h3\u003e\n\u003cp\u003eJL publishes 1.25 cubic feet of sealed airspace for the 12W3v3-2 and 1.125 for the -4. This cabinet is built at 1.25, so the 2 ohm coil sits on its published number and the 4 ohm coil lands slightly better damped than its own. Each chamber here is built at \u003cstrong\u003e1.321 cubic feet gross\u003c\/strong\u003e. Subtract the driver's 0.071 cubic feet of displacement and each 12W3v3 sees \u003cstrong\u003e1.250 cubic feet net\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTotal gross volume across both chambers is 2.642 cubic feet, 2.50 net acoustic.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section-alt\"\u003e\n\u003ch3\u003eWhy a Wedge\u003c\/h3\u003e\n\u003cdiv class=\"pow-card-grid\"\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003ePackaging\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eIt Uses the Trunk Lengthwise\u003c\/h4\u003e\n\u003cp\u003eTall face against the rear seat, tapering down as it runs out toward the lid. The cabinet claims the deep space at the base of the trunk and gives height back where the lid closes, so \u003cstrong\u003eyou keep usable trunk\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eLoading\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eThe Trunk Is Part of the System\u003c\/h4\u003e\n\u003cp\u003eFiring rearward means output loads into the trunk volume and reaches the cabin through the rear seat and deck. That path is what gives a trunk mounted subwoofer its weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eLocalization\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eHarder to Point At\u003c\/h4\u003e\n\u003cp\u003eBecause the drivers do not radiate straight into the cabin, the low end arrives through the structure rather than as a beam from behind your head, which makes \u003cstrong\u003ekeeping the stage forward\u003c\/strong\u003e easier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-card\"\u003e\n\u003cspan class=\"pow-card-label\"\u003eSeparation\u003c\/span\u003e\u003cdiv class=\"pow-card-divider\"\u003e\u003c\/div\u003e\n\u003ch4\u003eTwo Sealed Chambers\u003c\/h4\u003e\n\u003cp\u003eA full divider gives each 12W3v3 its own airspace. \u003cstrong\u003eNeither cone loads against the other\u003c\/strong\u003e, so the pair stays predictable when both are working hard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eDual Chamber, Not Common Chamber\u003c\/h3\u003e\n\u003cp\u003eEach 12W3v3 loads into its own sealed 1.321 cubic foot chamber, isolated by a full divider. With separate chambers, one driver's cone motion does not modulate the air load the other driver sees, so the two stay acoustically independent under hard excursion.\u003c\/p\u003e\n\u003cp\u003eThe 12W3v3 is rated at \u003cstrong\u003e500 watts RMS each\u003c\/strong\u003e, so this cabinet is built around a 1000 watt pair. A single Proline X terminal cup is side mounted and pre wired with 12 gauge OFC. This is a raw enclosure, so how you wire the drivers from that cup is your call. Both W3v3 coils are single voice coil, so a matched pair gives you series or parallel and nothing in between.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section-alt\"\u003e\n\u003ch3\u003eHow It Is Built\u003c\/h3\u003e\n\u003cdiv class=\"pow-highlight\"\u003e\n\u003ch3\u003eCabinet\u003c\/h3\u003e\n\u003cp\u003eCut on our ShopSabre CNC from Langboard Elite MDF and assembled with \u003cstrong\u003edado and V groove joinery\u003c\/strong\u003e over 0.75 inch panels, with a \u003cstrong\u003edouble baffle at 1.5 inches\u003c\/strong\u003e and a full chamber divider. Angled panel meets are cut as V joints so the faces close on a machined bevel rather than a filled seam.\u003c\/p\u003e\n\u003ch3\u003eMounting Pattern\u003c\/h3\u003e\n\u003cp\u003eThe 281mm cutout and the mounting locations are machined in the same operation from the same origin, so the holes cannot drift relative to each other. \u003cstrong\u003eThreaded inserts go into every one of those mounting locations\u003c\/strong\u003e, with stainless machine screws supplied, so each driver bolts down to metal instead of biting into MDF. That is what lets you pull a driver and put it back as many times as the install takes without chewing out the baffle.\u003c\/p\u003e\n\u003ch3\u003eWiring and Damping\u003c\/h3\u003e\n\u003cp\u003eOne Proline X ABS and carbon fiber composite terminal cup, side mounted, pre wired with 12 gauge OFC to both driver positions. Polyfill is installed as a light wall lining to control internal reflections without altering the acoustic volume, because adding fill density would shift the alignment off the 1.250 target.\u003c\/p\u003e\n\u003ch3\u003eFinish\u003c\/h3\u003e\n\u003cp\u003ePlush black carpet with a black acrylic badge on the woofer face.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eExternal dimensions are \u003cstrong\u003e32.00 inches wide by 16 inches tall\u003c\/strong\u003e, with depth running \u003cstrong\u003e16.86 inches at the base tapering to 11.04 inches at the top\u003c\/strong\u003e. Maximum driver mounting depth is 9.79 inches against the 12W3v3 requirement of 6.654.\u003c\/p\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eFront clearance.\u003c\/strong\u003e These drivers fire rearward into the trunk, so anything you load behind the box has to stay clear of the cones. At 13mm of one way excursion, allow at least an inch and verify both positions independently.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\n\u003ch3\u003eEnclosure Performance\u003c\/h3\u003e\n\u003cp\u003eCalculated from the published parameters for both W3v3 coils. The cabinet is one box; the two coils are different motors and land on different alignments in it, so both are given rather than averaged.\u003c\/p\u003e\n\u003ctable class=\"pow-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eCoil\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003cth\u003eCharacter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e\u003cstrong style=\"color:#86efac !important;\"\u003e12W3v3-4, 4 ohm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e0.796\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e48.3 Hz\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003e43.5 Hz\u003c\/td\u003e\n\u003ctd style=\"background:#14532d !important;color:#86efac !important;\"\u003ePunchy, slight lift at fc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e12W3v3-2, 2 ohm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.901\u003c\/td\u003e\n\u003ctd\u003e50.4 Hz\u003c\/td\u003e\n\u003ctd\u003e41.8 Hz\u003c\/td\u003e\n\u003ctd\u003eWarmer, more lift at fc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"pow-chartbox\"\u003e\u003csvg class=\"pow-chart\" width=\"1260\" height=\"420\" viewbox=\"0 0 1260 420\" preserveaspectratio=\"xMidYMid meet\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display:block !important;width:100% !important;max-width:100% !important;height:auto !important;\"\u003e\u003crect x=\"0\" y=\"0\" width=\"1260\" height=\"420\" fill=\"#0b1424\"\u003e\u003c\/rect\u003e\u003crect x=\"90\" y=\"50\" width=\"1080\" height=\"300\" fill=\"#111c30\" stroke=\"#4a3520\" stroke-width=\"1\"\u003e\u003c\/rect\u003e\u003cline x1=\"210\" y1=\"50\" x2=\"210\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"210\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e20\u003c\/text\u003e\u003cline x1=\"379\" y1=\"50\" x2=\"379\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"379\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e30\u003c\/text\u003e\u003cline x1=\"592\" y1=\"50\" x2=\"592\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"592\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e50\u003c\/text\u003e\u003cline x1=\"881\" y1=\"50\" x2=\"881\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"881\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e100\u003c\/text\u003e\u003cline x1=\"1170\" y1=\"50\" x2=\"1170\" y2=\"350\" stroke=\"#3a2818\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"1170\" y=\"375\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\" text-anchor=\"middle\"\u003e200\u003c\/text\u003e\u003cline x1=\"90\" y1=\"115\" x2=\"1170\" y2=\"115\" stroke=\"#334155\" stroke-width=\"1\"\u003e\u003c\/line\u003e\u003ctext x=\"1178\" y=\"120\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e0 dB\u003c\/text\u003e\u003cline x1=\"90\" y1=\"154\" x2=\"1170\" y2=\"154\" stroke=\"#64748b\" stroke-width=\"1\" stroke-dasharray=\"6,5\"\u003e\u003c\/line\u003e\u003ctext x=\"1178\" y=\"159\" font-size=\"15\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-3 dB\u003c\/text\u003e\u003ctext x=\"48\" y=\"185\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-5\u003c\/text\u003e\u003ctext x=\"48\" y=\"251\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-10\u003c\/text\u003e\u003ctext x=\"48\" y=\"316\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e-15\u003c\/text\u003e\u003cpolyline points=\"90,350 101,350 112,350 124,350 135,350 146,348 157,341 169,335 180,329 191,323 202,317 214,310 225,304 236,298 247,292 259,286 270,280 281,274 292,268 304,262 315,256 326,250 337,244 349,238 360,232 371,226 382,221 394,215 405,209 416,204 428,199 439,193 450,188 461,183 472,178 484,174 495,169 506,165 518,160 529,156 540,152 551,149 562,145 574,142 585,139 596,136 607,134 619,131 630,129 641,127 652,125 664,124 675,122 686,121 698,120 709,118 720,118 731,117 742,116 754,115 765,115 776,114 787,114 799,114 810,113 821,113 832,113 844,113 855,113 866,113 877,113 889,113 900,113 911,113 923,113 934,113 945,113 956,113 968,113 979,113 990,113 1001,113 1012,113 1024,113 1035,113 1046,113 1058,113 1069,113 1080,113 1091,114 1102,114 1114,114 1125,114 1136,114 1147,114 1159,114 1170,114\" fill=\"none\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/polyline\u003e\u003cline x1=\"800\" y1=\"255\" x2=\"850\" y2=\"255\" stroke=\"#c68a4a\" stroke-width=\"4.5\"\u003e\u003c\/line\u003e\u003ctext x=\"862\" y=\"261\" font-size=\"16\" fill=\"#e2e8f0\" font-family=\"sans-serif\" font-weight=\"700\"\u003e12W3v3-4\u003c\/text\u003e\u003cpolyline points=\"90,350 101,350 112,350 124,350 135,350 146,350 157,349 169,342 180,336 191,330 202,323 214,317 225,311 236,304 247,298 259,292 270,285 281,279 292,272 304,266 315,260 326,253 337,247 349,241 360,235 371,228 382,222 394,216 405,210 416,204 428,198 439,192 450,186 461,181 472,175 484,170 495,164 506,159 518,154 529,150 540,145 551,141 562,137 574,134 585,130 596,127 607,124 619,121 630,119 641,117 652,115 664,113 675,112 686,111 698,110 709,109 720,108 731,107 742,107 754,107 765,106 776,106 787,106 799,106 810,106 821,106 832,106 844,107 855,107 866,107 877,107 889,107 900,108 911,108 923,108 934,108 945,109 956,109 968,109 979,109 990,110 1001,110 1012,110 1024,110 1035,111 1046,111 1058,111 1069,111 1080,111 1091,112 1102,112 1114,112 1125,112 1136,112 1147,112 1159,112 1170,113\" fill=\"none\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/polyline\u003e\u003cline x1=\"800\" y1=\"287\" x2=\"850\" y2=\"287\" stroke=\"#64748b\" stroke-width=\"2.5\"\u003e\u003c\/line\u003e\u003ctext x=\"862\" y=\"293\" font-size=\"16\" fill=\"#94a3b8\" font-family=\"sans-serif\"\u003e12W3v3-2\u003c\/text\u003e\u003ctext x=\"560\" y=\"404\" font-size=\"17\" fill=\"#c68a4a\" font-family=\"sans-serif\" font-weight=\"700\" text-anchor=\"middle\"\u003eFrequency (Hz)\u003c\/text\u003e\u003ctext x=\"102\" y=\"36\" font-size=\"16\" fill=\"#d99058\" font-family=\"sans-serif\" font-weight=\"700\"\u003eJL Audio 12W3v3, per driver in this enclosure. Anechoic half-space, no cabin gain.\u003c\/text\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"pow-alert\"\u003e\u003cp\u003e\u003cstrong\u003eBoth coils, one cabinet.\u003c\/strong\u003e Qtc runs 0.796 to 0.901 depending on which W3v3 you fit. That whole span sits in the range JL voices this series for, a little lift at resonance rather than a maximally flat alignment. It is a deliberate choice on their part and this box respects it instead of fighting it.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eRun your own numbers with the \u003ca href=\"\/pages\/sealed-box-calculator\"\u003eSealed Box Calculator\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pow-section\"\u003e\u003cp\u003eFull dimensions, cutout, mounting depth, and hardware details are listed under the \u003cstrong\u003eEnclosures\u003c\/strong\u003e tab.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"pow-cta\"\u003e\n\u003ch3\u003eCut for the 12W3v3. Built in Tennessee.\u003c\/h3\u003e\n\u003cp\u003eEnclosure only. The JL Audio 12W3v3 drivers are purchased separately. Built to order in Tullahoma, Tennessee on our own CNC equipment. Questions on fitment or amplifier matching, call or text 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44589663518809,"sku":"PO 12D-S W JL W3V3","price":389.99,"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_0a668744-aa22-440b-a9b4-04a9eb3a8da8.jpg?v=1787957078","url":"https:\/\/audiointensity.com\/products\/jl-audio-12w3v3-dual-subwoofer-box","provider":"Audio Intensity","version":"1.0","type":"link"}