{"product_id":"performance-optimized-wedge-sealed-triple-11-enclosure-stereo-integrity-bm11","title":"Performance Optimized Wedge Sealed Triple 11\" Enclosure | Stereo Integrity BM-11","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 BM-11\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eTriple 11\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.40 ft3 Net Per Driver\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e0.45 ft3 Gross Per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 1.43\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e40.00\" x 14\" x 5.41\/10.50\"\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\u003eThe Stereo Integrity BM-11 in a Triple-Driver Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eAn 11 inch cone on a 3.071 inch mounting depth, 13 mm of one-way travel and a 500 watt RMS rating. It is a shallow driver in a big basket, which is the whole point.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.40 cubic feet net per driver, 0.45 cu ft gross per chamber before the driver's 0.030 cu ft displacement.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eThree Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eTwo full dividers run floor to ceiling and front to back, giving each BM-11 its own sealed 0.45 cu ft gross chamber. No cone loads against another, so the set stays predictable under hard excursion. Every chamber is cut to the same volume the single version delivers, so the alignment is identical whichever you buy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n\u003cp\u003eThe BM-11 mounts on the vertical trunk-lid-side face and fires 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 Woofer\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cone firing rearward into the trunk cavity.\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\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003ePreserves Trunk Cargo Space\u003c\/h4\u003e\n\u003cp\u003eThe wedge tucks against the seat back and the space in front stays usable.\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 BM-11\u003c\/h2\u003e\n\u003cp\u003eAt 0.40 cubic feet net the BM-11 runs a system Qtc of \u003cstrong\u003e1.432\u003c\/strong\u003e with resonance at 58.8 Hz. That is a \u003cstrong\u003ehigh-Q sealed alignment\u003c\/strong\u003e, not a flat one. There is a rise around 59 Hz before the rolloff, and half power still lands at 41.5 Hz anechoic, which is low for a cabinet this size. The BM-11's own Qts is what puts it there: no small sealed box takes this driver below Qtc 1.2.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003eStereo Integrity publish a Qts of 0.73 for the BM-11, loudspeakerdatabase carries 0.83, and a ResoNix Klippel measurement gives 0.85. We compute from 0.83, the self-consistent set and the middle of the three. The alignment is under-damped on all three readings, Qtc 1.26 to 1.47, so the disagreement changes the decimal and not the character.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch3\u003eAlignment Numbers\u003c\/h3\u003e\n\u003cp\u003eQtc 1.432 · fc 58.8 Hz · F3 41.5 Hz anechoic · computed from Qts 0.83, Vas 22.4 L, Fs 34.1 Hz\u003c\/p\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eVertical baffle CNC cut to 10.00 in. Driver mounting depth 3.071 in required. Threaded inserts pressed into the baffle backside at every mounting location.\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 and dividers 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.\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 and carbon fiber composite, 12 gauge OFC pre-wired to every 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 the Stereo Integrity BM-11 Trio to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe BM-11 is a dual 2 ohm and three of them is six coils. The two clean answers are each driver in series and the three in parallel for \u003cstrong\u003e1.33 ohms\u003c\/strong\u003e, or each driver in parallel and the three in series for \u003cstrong\u003e3 ohms\u003c\/strong\u003e. Work it out before you buy the amplifier.\u003c\/p\u003e\n\u003cp\u003ePower handling is 1500 watts RMS total across the set. Aim for roughly 1050 to 1500 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 BM-11 drivers are purchased separately. Call or text 931-563-5151.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-cta\"\u003e\n\u003ch2\u003eStereo Integrity BM-11 Triple in a Rear-Firing Wedge\u003c\/h2\u003e\n\u003cp\u003e0.40 cubic feet net per driver at Qtc 1.43, F3 41.5 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":"Black","offer_id":44607338610777,"sku":"PO 11T-S W BM11 BB","price":349.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":44607338643545,"sku":"PO 11T-S W BM11 B","price":329.99,"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_77f73cef-68d5-45bd-bb45-e762366c615d.jpg?v=1788081529","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-sealed-triple-11-enclosure-stereo-integrity-bm11","provider":"Audio Intensity","version":"1.0","type":"link"}