{"product_id":"performance-optimized-wedge-sealed-dual-12-enclosure-ampere-audio-aa-2-75-12","title":"Performance Optimized Wedge Sealed Dual 12\" Enclosure | Ampere Audio AA-2.75 12","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 | Dual Ampere Audio AA-2.75 12\u003c\/p\u003e\n\u003cp class=\"po-subtitle\"\u003eDual 12\" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design\u003c\/p\u003e\n\u003cdiv class=\"po-badges\"\u003e\n\u003cspan class=\"po-badge\"\u003e0.82 ft3 Net per Chamber\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e1.92 ft3 Gross\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eQtc 0.66 to 0.67\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003eTwo Separate Chambers\u003c\/span\u003e\u003cspan class=\"po-badge\"\u003e28.91\" x 16\" x 8.75\/14.57\"\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\u003eA Pair of Ampere Audio AA-2.75 12 in a Sealed Wedge\u003c\/h2\u003e\n\u003cp\u003eThe AA-2.75 12 is Ampere's 12 inch in the AA-2.75 series: built on a cast aluminum frame with a 2.75 inch aluminum voice coil, a vented gap and a large aluminum Faraday ring, rated 1000 watts RMS with 19 mm of one-way excursion, 7.50 inches of mounting depth on a 12.83 inch frame. Every Thiele-Small figure comes from Ampere's own published table for the AA-2.75 12, and the table holds together: the moving mass and resonance reproduce the published Vas on a cone area in class for a 12 inch driver. Two cells in Ampere's table are mislabeled: the cone area printed is the nominal circle in square inches, not the effective area, and the compliance is printed in mm\/N where the value is micrometers per newton. The cone area used here, 532 square centimeters, is derived from Ampere's own Vas and compliance.\u003c\/p\u003e\n\u003cdiv class=\"po-highlight\"\u003e\u003cp\u003e0.82 cubic feet net per chamber on Ampere's published figures: the dual 2 ohm reads Qtc 0.665 with resonance at 56.8 Hz and half power at 60.5 Hz, and the dual 4 ohm reads Qtc 0.659 with resonance at 49.9 Hz and half power at 53.8 Hz. One cabinet serves both coils, built to the volume that keeps both closest to maximally flat. That is a slightly over-damped alignment: a gentle, early rolloff and tight transients rather than a flat top.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eTwo Fully Separate Chambers\u003c\/h2\u003e\n\u003cp\u003eA bonded full-height 3\/4 inch MDF divider splits the cabinet into two sealed chambers of 0.82 cubic feet net each, so every driver sees exactly the airspace printed on this page. Two drivers sharing one volume load each other; the divider removes that, and each chamber carries its own polyfill.\u003c\/p\u003e\n\u003cp\u003eThe cabinet is 28.91 inches wide, 16 tall, 8.75 inches deep at the top and 14.57 at the base; the width is set by two 12.83 inch frames side by side. One shared side-mounted terminal cup feeds both driver positions.\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 drivers mount on the vertical trunk-lid-side face and fire 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 Woofers\u003c\/h4\u003e\n\u003cp\u003eVertical baffle, cones 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 a pair of Ampere Audio AA-2.75 12\u003c\/h2\u003e\n\u003cp\u003eAnechoic half power lands at 60.5 Hz on the dual 2 ohm and 53.8 Hz on the dual 4 ohm, before any cabin gain. Ampere publishes the driver displacement, 0.11 cubic feet, and it is taken out of the net figure for each driver.\u003c\/p\u003e\n\u003ch3\u003eAlignment Numbers (Per Chamber)\u003c\/h3\u003e\n\u003ctable class=\"df-tier\"\u003e\n\u003ctr\u003e\n\u003cth\u003eDriver (per chamber)\u003c\/th\u003e\n\u003cth\u003eSystem Qtc\u003c\/th\u003e\n\u003cth\u003efc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAA-2.75 12 dual 2 ohm\u003c\/td\u003e\n\u003ctd\u003eQtc 0.665\u003c\/td\u003e\n\u003ctd\u003e56.8 Hz\u003c\/td\u003e\n\u003ctd\u003e60.5 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAA-2.75 12 dual 4 ohm\u003c\/td\u003e\n\u003ctd\u003eQtc 0.659\u003c\/td\u003e\n\u003ctd\u003e49.9 Hz\u003c\/td\u003e\n\u003ctd\u003e53.8 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMounting Geometry\u003c\/h3\u003e\n\u003cp\u003eThe baffle is cut to 11.01 in, Ampere's published cutout, under the 12.83 in frame. The rear panel rakes 20 degrees, so the cavity deepens from 8.75 in at the top to 14.57 in at the base, and the 7.50 in motor clears it with 0.75 in to spare. Ampere prints no bolt circle for the AA-2.75 12, so the baffle ships undrilled with a threaded insert kit and stainless machine screws: set the driver in the recess, mark its holes, drill, press the inserts and bolt it down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWhat the Numbers Rest On\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 divider 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, the outer layer machined as a flush recess.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-card\"\u003e\n\u003ch4\u003eAmpere's Published Parameters\u003c\/h4\u003e\n\u003cp\u003edual 2 ohm: Fs 38.9 Hz, Qts 0.456, Qes 0.507, Qms 4.513, Vas 26.29 L, Mms 256.6 g, Bl 21.99 N\/A, Re 3.91 ohm. dual 4 ohm: Fs 33.6 Hz, Qts 0.444, Qes 0.5, Qms 4.018, Vas 28.06 L, Mms 321.8 g, Bl 29.39 N\/A, Re 6.35 ohm. Cone area 532 cm2 (derived). Xmax 19 mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"po-section\"\u003e\n\u003ch2\u003eWiring a pair of Ampere Audio AA-2.75 12 to Your Amplifier\u003c\/h2\u003e\n\u003cp\u003eAmpere sells the AA-2.75 12 as dual 2 ohm and dual 4 ohm; a matched pair should share a coil. A pair of dual 2 ohm drivers lands on 2 ohms with each woofer's coils in series and the two woofers in parallel, or 8 ohms all in series. A pair of dual 4 ohm drivers lands on 4 ohms with each woofer's coils in series and the woofers in parallel, or 1 ohm with everything in parallel. Anything under 1 ohm, and many amplifiers at 1 ohm, is outside what the amplifier is built for, so series wiring is the safe default. Confirm the final load against your amplifier's minimum stable impedance before powering the system.\u003c\/p\u003e\n\u003cp\u003ePower handling is 1000 watts RMS per driver, 2000 across the pair. Aim for roughly 700 to 1000 watts per driver at the impedance you wire.\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 with the gloss black acrylic baffle insert, one shared pre-wired terminal cup, 12 gauge OFC to both driver positions. Polyfill wall lining installed. Threaded insert kit and stainless machine screws in the box. 1 year limited warranty. Enclosure only, the 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\u003eDual Ampere Audio AA-2.75 12: Cut for One Driver\u003c\/h2\u003e\n\u003cp\u003e0.82 cubic feet net per chamber at Qtc 0.66 to 0.67, F3 60.5 Hz on the dual 2 ohm and 53.8 Hz on the dual 4 ohm, 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":47379333152857,"sku":"PO 12D-S W AA275 BB","price":369.99,"currency_code":"USD","in_stock":true},{"title":"None","offer_id":47379333185625,"sku":"PO 12D-S W AA275 B","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO_12D-S_W_AA275_Front.jpg?v=1791173505","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-sealed-dual-12-enclosure-ampere-audio-aa-2-75-12","provider":"Audio Intensity","version":"1.0","type":"link"}