{"product_id":"sundown-audio-dual-nsv4-12-ported-enclosure","title":"Sundown Audio Dual 12\" NSv4 Ported Enclosure - AABE-SA-NSv4-D12-HD","description":"\u003ch2\u003eSundown Audio Dual 12\" NSv4 Ported Enclosure - AABE-SA-NSv4-D12-HD\u003c\/h2\u003e\n\u003cp\u003eCustom built enclosure specifically for dual Sundown Audio NSv4 12\" subwoofers. Lead time is 2-3 weeks, no refunds once enclosures have been cut out! This is a custom made box specifically for dual Sundown Audio NSv4 12\" subwoofers. At Basshead Supply the goal with the “branded series” enclosures is to offer subwoofer specific enclosures that are well built, well performing and good looking enclosures at an affordable price. Using premium 1” Baltic Birch all around we are able to achieve a very strong and light enclosure. Using our refined assembly process produces an enclosure with NO visible screw holes anywhere on the enclosure. The entire enclosure is glued together with Titebond III and coupled with our 1” baffle and an additional 24mm baffle brace (on the dual subwoofer models) the enclosure is strong enough to handle high power subwoofer setups. Finished off with our carbon gray stain and a polyurethane finish these enclosures have a unique look to set it apart from all the generic prefabs. Complete with a recessed Satin Nickel Brass binding posts and prewired with OFC 10g wire, you are ready to go the moment it arrives. These are also built with love, by hand right here in the UNITED STATES OF AMERICA.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e5 cubic feet net enclosure\u003c\/li\u003e\n\u003cli\u003e31 hz tuning\u003c\/li\u003e\n\u003cli\u003e70 sq inches of port\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-sheets-value='{\"1\":2,\"2\":\"13.5\" x 3.875\"\"}' data-sheets-userformat='{\"2\":577,\"3\":{\"1\":0},\"9\":1,\"12\":0}'\u003e16\" x 4.375\" port dimensions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e11.01\" subwoofer cut out\u003c\/li\u003e\n\u003cli\u003eEntire enclosure 1\" birch ply\u003c\/li\u003e\n\u003cli\u003e17 ply birch veneer construction\u003c\/li\u003e\n\u003cli\u003eGray stained finish\u003c\/li\u003e\n\u003cli\u003ePre-wired metal binding post\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e18\" tall\u003c\/li\u003e\n\u003cli\u003e38.625\" wide\u003c\/li\u003e\n\u003cli\u003e21.75″ deep\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat Our Experts Think\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a2823d0-9318-83e8-bfe5-daf2e03cc894-8\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a2823d0-9318-83e8-bfe5-daf2e03cc894-8\" data-turn-id-container=\"request-6a2823d0-9318-83e8-bfe5-daf2e03cc894-8\" data-testid=\"conversation-turn-64\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"103df7b5-c5bb-4863-ae90-3a788f0dd62b\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"28\" data-end=\"904\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"87r57x\" data-start=\"28\" data-end=\"181\"\u003e\n\u003cstrong data-start=\"30\" data-end=\"67\"\u003eDesigned for Dual NSv4 Subwoofers\u003c\/strong\u003e – Engineered specifically to maximize the output and efficiency of \u003cstrong data-start=\"135\" data-end=\"169\" data-is-only-node=\"\"\u003etwo 12-inch Sundown Audio NSv4\u003c\/strong\u003e subwoofers.\u003c\/li\u003e\n\u003cli data-section-id=\"vkmndn\" data-start=\"182\" data-end=\"338\"\u003e\n\u003cstrong data-start=\"184\" data-end=\"218\"\u003eHigh-Performance Ported Design\u003c\/strong\u003e – Produces deeper bass extension, greater efficiency, and stronger low-frequency impact than typical sealed enclosures.\u003c\/li\u003e\n\u003cli data-section-id=\"9bv6mo\" data-start=\"339\" data-end=\"471\"\u003e\n\u003cstrong data-start=\"341\" data-end=\"379\"\u003ePrecision-Tuned for Maximum Output\u003c\/strong\u003e – Optimized enclosure volume and port tuning help deliver powerful, accurate bass response.\u003c\/li\u003e\n\u003cli data-section-id=\"22cyf9\" data-start=\"472\" data-end=\"611\"\u003e\n\u003cstrong data-start=\"474\" data-end=\"510\"\u003eBuilt for Extreme Power Handling\u003c\/strong\u003e – Designed to support the high-excursion capabilities and demanding power levels of the NSv4 series.\u003c\/li\u003e\n\u003cli data-section-id=\"pfxux4\" data-start=\"612\" data-end=\"736\"\u003e\n\u003cstrong data-start=\"614\" data-end=\"641\"\u003eHeavy-Duty Construction\u003c\/strong\u003e – Reinforced build minimizes enclosure flex and unwanted vibrations for cleaner, tighter bass.\u003c\/li\u003e\n\u003cli data-section-id=\"1aooklx\" data-start=\"737\" data-end=\"904\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"739\" data-end=\"780\"\u003eExpert Choice for Serious SPL Systems\u003c\/strong\u003e – Ideal for enthusiasts seeking competition-level output, deep bass performance, and a professionally engineered enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a2823d6-8220-83e8-9904-5b4161f4ce0e-8\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a2823d6-8220-83e8-9904-5b4161f4ce0e-8\" data-turn-id-container=\"request-6a2823d6-8220-83e8-9904-5b4161f4ce0e-8\" data-testid=\"conversation-turn-64\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"00977e4c-7cc3-4a6f-8ea4-90f8322f5d00\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"229\"\u003e\u003cstrong data-start=\"0\" data-end=\"77\"\u003eQ: What is the Sundown Audio Dual 12\" NSv4 Ported Enclosure designed for?\u003c\/strong\u003e\u003cbr data-start=\"77\" data-end=\"80\"\u003eA: It is a heavy-duty ported enclosure engineered specifically for two 12-inch Sundown Audio NSv4 subwoofers to maximize bass output and performance.\u003c\/p\u003e\n\u003cp data-start=\"231\" data-end=\"421\"\u003e\u003cstrong data-start=\"231\" data-end=\"281\"\u003eQ: Why choose a dual 12-inch ported enclosure?\u003c\/strong\u003e\u003cbr data-start=\"281\" data-end=\"284\"\u003eA: The dual-subwoofer ported design delivers deeper bass, higher SPL, and greater efficiency than many single-subwoofer or sealed setups.\u003c\/p\u003e\n\u003cp data-start=\"423\" data-end=\"609\"\u003e\u003cstrong data-start=\"423\" data-end=\"490\"\u003eQ: Is this enclosure designed specifically for NSv4 subwoofers?\u003c\/strong\u003e\u003cbr data-start=\"490\" data-end=\"493\"\u003eA: Yes, it is optimized to match the airspace and tuning requirements of dual Sundown Audio NSv4 12-inch subwoofers.\u003c\/p\u003e\n\u003cp data-start=\"611\" data-end=\"786\"\u003e\u003cstrong data-start=\"611\" data-end=\"661\"\u003eQ: What type of bass performance can I expect?\u003c\/strong\u003e\u003cbr data-start=\"661\" data-end=\"664\"\u003eA: Expect powerful low-frequency response, deep bass extension, and extreme output for high-performance car audio systems.\u003c\/p\u003e\n\u003cp data-start=\"788\" data-end=\"925\"\u003e\u003cstrong data-start=\"788\" data-end=\"843\"\u003eQ: Is the enclosure pre-built and ready to install?\u003c\/strong\u003e\u003cbr data-start=\"843\" data-end=\"846\"\u003eA: Yes, it comes professionally assembled and ready for subwoofer installation.\u003c\/p\u003e\n\u003cp data-start=\"927\" data-end=\"1087\"\u003e\u003cstrong data-start=\"927\" data-end=\"975\"\u003eQ: What materials are used in the enclosure?\u003c\/strong\u003e\u003cbr data-start=\"975\" data-end=\"978\"\u003eA: It is constructed from durable MDF with reinforced internal bracing for strength and long-term durability.\u003c\/p\u003e\n\u003cp data-start=\"1089\" data-end=\"1243\"\u003e\u003cstrong data-start=\"1089\" data-end=\"1144\"\u003eQ: Does the enclosure improve subwoofer efficiency?\u003c\/strong\u003e\u003cbr data-start=\"1144\" data-end=\"1147\"\u003eA: Yes, the tuned ported design helps maximize output, efficiency, and overall bass performance.\u003c\/p\u003e\n\u003cp data-start=\"1245\" data-end=\"1422\"\u003e\u003cstrong data-start=\"1245\" data-end=\"1302\"\u003eQ: Is this enclosure suitable for high-power systems?\u003c\/strong\u003e\u003cbr data-start=\"1302\" data-end=\"1305\"\u003eA: Yes, it is built to support the demanding power handling and excursion capabilities of the NSv4 series subwoofers.\u003c\/p\u003e\n\u003cp data-start=\"1424\" data-end=\"1592\"\u003e\u003cstrong data-start=\"1424\" data-end=\"1475\"\u003eQ: Can it be used for SPL-focused applications?\u003c\/strong\u003e\u003cbr data-start=\"1475\" data-end=\"1478\"\u003eA: Yes, the enclosure is designed to deliver strong output for both daily listening and SPL-oriented audio builds.\u003c\/p\u003e\n\u003cp data-start=\"1594\" data-end=\"1771\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1594\" data-end=\"1642\"\u003eQ: Is professional installation recommended?\u003c\/strong\u003e\u003cbr data-start=\"1642\" data-end=\"1645\"\u003eA: Yes, professional installation is recommended to ensure proper mounting, wiring, and system tuning for optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1k4daf1\" data-start=\"22\" data-end=\"110\"\u003eInspect the enclosure regularly for loose screws, cracks, or signs of structural wear.\u003c\/li\u003e\n\u003cli data-section-id=\"1unwqd1\" data-start=\"111\" data-end=\"205\"\u003eTighten all subwoofer mounting hardware to prevent vibrations and maintain an airtight seal.\u003c\/li\u003e\n\u003cli data-section-id=\"liop1p\" data-start=\"206\" data-end=\"300\"\u003eCheck wiring and terminal connections periodically for damage, corrosion, or loose contacts.\u003c\/li\u003e\n\u003cli data-section-id=\"q7p1e6\" data-start=\"301\" data-end=\"371\"\u003eKeep the enclosure clean, dry, and free from dust or debris buildup.\u003c\/li\u003e\n\u003cli data-section-id=\"fk2k18\" data-start=\"372\" data-end=\"447\"\u003eAvoid prolonged exposure to direct sunlight, excessive heat, or moisture.\u003c\/li\u003e\n\u003cli data-section-id=\"dzlgwh\" data-start=\"448\" data-end=\"541\"\u003eInspect the port openings regularly and clear any obstructions that could restrict airflow.\u003c\/li\u003e\n\u003cli data-section-id=\"1mw52e6\" data-start=\"542\" data-end=\"630\"\u003eOperate the subwoofers within recommended power limits to ensure reliable performance.\u003c\/li\u003e\n\u003cli data-section-id=\"qthlkr\" data-start=\"631\" data-end=\"744\" data-is-last-node=\"\"\u003eListen for rattles, vibrations, or air leaks and address any issues promptly to maintain optimal bass response.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sundown Audio","offers":[{"title":"Default Title","offer_id":45710593818815,"sku":"AABE-SA-NSv4-D12-HD","price":618.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/AABE-SA-SAv2-D10-RD-01_4c95b2fa-55fd-453c-8909-161ef080e2ec.png?v=1781021976","url":"https:\/\/www.mybackyardzone.com\/products\/sundown-audio-dual-nsv4-12-ported-enclosure","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}