{"product_id":"professional-series-ported-12-enclosure-ampere-audio-aa-3-0-12","title":"Professional Series Ported 12\" Enclosure | Ampere Audio AA-3.0 12","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%,#001a91 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(91,120,255,.18);border:1px solid #5b78ff;color:#99abff;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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class=\"df-wrap\"\u003e\n\n\u003cdiv class=\"df-hero\"\u003e\n  \u003ch2\u003eProline X Professional 12\" Ported\u003c\/h2\u003e\n  \u003cp\u003eOne AA-3.0 12 in a front-firing box, vented at 27.5 Hz on a three-layer flush-mount baffle\u003c\/p\u003e\n  \u003cdiv class=\"df-badges\"\u003e\n    \u003cspan class=\"df-badge\"\u003e4.22 cu ft net\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eTuned 27.5 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eF3 23.2 Hz\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003e2.25\" three-layer baffle\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eCut for the AA-3.0 12\u003c\/span\u003e\n    \u003cspan class=\"df-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-stats\"\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e4.22\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\"\u003e27.5\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz tuning\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e23.2\u003c\/span\u003e\u003cspan class=\"l\"\u003eHz F3 anechoic\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"df-stat\"\u003e\n\u003cspan class=\"n\"\u003e65.2\u003c\/span\u003e\u003cspan class=\"l\"\u003esq in port area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhy this driver is vented at 27.5 Hz\u003c\/h3\u003e\n  \u003cp\u003eThe AA-3.0 12 is Ampere's 12 inch on a 3 inch flat-wound coil with a 65 mm winding on a four-stack ferrite motor: 33.8 Hz, a Qts of 0.47, 15.6 liters of Vas and 29 mm of excursion, rated 2000 W RMS. This cabinet gives it 4.22 cubic feet net behind a 2.25 inch three-layer baffle, vented at 27.5 Hz through a 65.2 square inch slot beside the woofer, for an anechoic F3 of 23.2 Hz in a 32 by 16 by 28 inch front-firing box.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThreaded insert kit ships with this box.\u003c\/strong\u003e Ampere Audio does not publish the mounting hole locations for the AA-3.0 12, so we cannot install the threaded inserts before it ships. The threaded insert kit comes in the box instead: inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, an allen key and woofer gasket tape. You set the inserts when you mount the woofer, and this box ships with one kit.\u003c\/p\u003e\n  \u003cp\u003eWith a Qts of 0.47 and a 10.25 inch deep motor, the AA-3.0 12 has no good sealed box in a trunk: the motor forces the cabinet several times larger than the alignment wants, and sealed it lands near Qtc 0.4 to 0.6 with half power up around 60 to 90 Hz. A port is what this driver is built for. The port runs 21.8 m\/s in the channel and 16.7 at the mouth at 2400 W, 1.2 times Ampere's rating, and the cone peaks at 16.7 of its 29 mm. Passband ripple is 5.3 dB and the in-car spread from 25 to 60 Hz 14.0 dB, a peaky alignment that trades evenness for output near tuning.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eWhat makes it Professional\u003c\/h3\u003e\n  \u003cdiv class=\"df-grid\"\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThree-layer baffle, flush mount\u003c\/h4\u003e\n\u003cp\u003eThree layers of 3\/4 inch Langboard Elite make a 2.25 inch\n    front. The outer layer is routed to the flange, so the woofer sits flush with the face; the two layers behind it\n    carry the mounting hardware and the load.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eAmpere Audio logo acrylic\u003c\/h4\u003e\n\u003cp\u003eA glossy black acrylic insert with the Ampere Audio mark sits in the outer\n    layer beside the woofer. It is standard on every Professional cabinet.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eThreaded insert kit ships with this box\u003c\/h4\u003e\n\u003cp\u003eThreaded insert kit included, inserts NOT pre-installed: the manufacturer publishes no mounting hole locations, so the kit ships with the box for installation when the woofer goes in: 8 to 12 inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, allen key and gasket tape.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003ePort gated at 2400 W\u003c\/h4\u003e\n\u003cp\u003eThe 65.2 square inch slot beside the woofer is sized so the\n    channel runs 21.8 metres per second and the mouth 16.7 metres per second at 1.2 times the driver's rating, under the\n    17 metres per second where a slot starts to chuff. The channel runs 19.75 inches along its wall and turns once along the back wall for another 13.36 inches, which is why a 27.5 Hz tuning fits a 28.00 inch deep box.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eWhy this is a Professional build\u003c\/h4\u003e\n\u003cp\u003eEvery driver is run through the Performance Optimized wedge and down-fire before this chassis; the Professional box is where a driver lands when that smaller envelope, 30 inches wide and 18 inches deep with a triangular side port, cannot give it what it needs at its rated power. The AA-3.0 12 did not clear the port gate there. The calmest wedge port that fits that envelope is 16.9 square inches at 20.5 by 12.25 by 17.89 inches, and its mouth runs 34.0 metres per second at 2000 W against the 17 metres per second line where a port starts to chuff. That port would stay clean to about 501 W. The slot on this box reaches 65.2 square inches and holds the mouth at 16.7 metres per second at 2400 W.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"df-card\"\u003e\n\u003ch4\u003eWhat the price covers\u003c\/h4\u003e\n\u003cp\u003eEvery Professional cabinet is priced the same way, by its size: this one is 8.30 cubic feet outside. Delivery to the 48 states is inside the price; it ships as a 82 lb parcel and checkout adds nothing.\u003c\/p\u003e\n\u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe cabinet\u003c\/h3\u003e\n  \u003cp\u003e32.00\" W x 16.00\" H x 28.00\" D external. Two windowed braces run front to back either side of the woofer, clearing the cutout by two and a half inches. The box ships dry: polyfill detunes a ported alignment. Inside the 32 by 16 Professional envelope for a single 12, 28 inches deep. 12.50 inch frame, flush in the outer baffle layer, 11.12 inch cutout, 10.25 inches of mounting depth. Ampere print no bolt circle, so a threaded insert kit ships in the box. It ships as a parcel.\u003c\/p\u003e\n  \u003cp\u003eAmpere print Fs, Q, Vas, moving mass, Bl and Re for the AA-3.0 12 but no cone area and no compliance. The 452 square centimeters we size the port against is derived from those figures, and it lands in class for a 12 inch cone. Displacement is an estimate, 0.165 cubic feet, because Ampere do not publish one. Tuning includes a 1.5 Hz fold loss that is an estimate, not a bench measurement. The figures are solved on Ampere's dual 2 ohm row. The dual 1 ohm version shares the frame, cutout and mounting depth and fits the same cabinet; its own table reads a touch lower in Q (Qts 0.39 against 0.47), so it sits a little tighter near tuning in this box. Ampere Audio does not publish the mounting hole locations for the AA-3.0 12, so we cannot install the threaded inserts before it ships. The threaded insert kit comes in the box instead: inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, an allen key and woofer gasket tape. You set the inserts when you mount the woofer, and this box ships with one kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"df-section\"\u003e\n  \u003ch3\u003eThe numbers to respect\u003c\/h3\u003e\n  \n  \u003cp\u003eSet a 22 Hz subsonic filter, 24 dB per octave. Below tuning the vent stops loading the cone; with the filter in\n  place the cone reaches 16.7 mm of its 29.0 mm at 2400 W.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":47379442499673,"sku":"Pro 12-P AA3","price":759.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/Pro_12-P_AA3_Front.jpg?v=1791176811","url":"https:\/\/audiointensity.com\/products\/professional-series-ported-12-enclosure-ampere-audio-aa-3-0-12","provider":"Audio Intensity","version":"1.0","type":"link"}