{"product_id":"mb-quart-mbqj-stg4ah-1-800w-stage-4-jeep-jl-jt-car-audio-4-speaker-system-kit","title":"MB Quart Stage 4 Audio System for Jeep Wrangler JL 18-26\/Gladiator JT 20-26 - 422643","description":"\u003ch2\u003eMB Quart Stage 4 Audio System for Jeep Wrangler JL 18-26\/Gladiator JT 20-26 - 422643\u003c\/h2\u003e\n\u003cp\u003eTake your Jeep’s sound system to the next level with the MB Quart MBQJ-STG4AH-1 STAGE 4 Audio Upgrade Kit, engineered exclusively for Jeep Wrangler JL (2018-2026) and Gladiator JT (2020-2026). Designed for aftermarket radios and requiring a rear speaker kit or soundbar for full coverage, this complete upgrade delivers powerful, balanced, and precise sound performance on any road or trail.\u003c\/p\u003e\n\u003cp\u003eThis all-in-one kit includes a 4-speaker set with premium components: two 3.5-inch coaxial speakers with 0.75-inch magnesium dome tweeters for crisp highs, and two 6.5-inch midbass drivers with polypropylene\/mica blend cones for strong midrange response. The system is powered by dual 400-watt NA2 Class-D compact amplifiers with on-board equalization, producing 800 watts of peak output in a high-efficiency, compact design. With optimized crossover networks (12dB midrange \/ 6dB tweeter), every detail is tuned for clarity, depth, and full-range audio that cuts through road noise and outdoor conditions.\u003c\/p\u003e\n\u003cp\u003eBuilt for rugged environments, the MBQJ-STG4AH-1 features durable composite mounting enclosures, a powder-coated amplifier plate, and high-quality speaker materials designed to withstand demanding Jeep and truck use. Installation is fast and simple thanks to plug-and-play OEM harnesses and factory-specific mounting, eliminating the need for custom fabrication while ensuring a seamless fit in factory locations.\u003c\/p\u003e\n\u003cp\u003eWith a frequency response of 75 Hz–23 kHz, sensitivity of 89 dB, and a black finish that blends with Jeep interiors, this kit provides both performance and style. Dimensions measure 22.24 x 18.34 x 10.59 inches with a total weight of 25 pounds. Backed by MB Quart’s heritage of German engineering, the STAGE 4 Jeep upgrade kit delivers reliable power, premium sound quality, and long-lasting durability for your vehicle.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eStage 4 audio system designed for aftermarket source systems for Jeep Wrangler JL 2018-2026 and Gladiator JT 2020-2026\u003c\/li\u003e\n\u003cli\u003eRequires aftermarket source unit, and requires rear speaker kit or soundbar\u003c\/li\u003e\n\u003cli\u003eIncludes (2) 3.5-inch coaxial speakers with 0.75-inch magnesium dome tweeters and (2) 6.5-inch midbass drivers with polypropylene\/mica blend cones\u003c\/li\u003e\n\u003cli\u003eIncludes dual 400-watt NA2 Class-D compact amplifiers engineered for high efficiency and reliable performance\u003c\/li\u003e\n\u003cli\u003eOn-board equalization provides balanced sound tuning with 800 watts total peak output\u003c\/li\u003e\n\u003cli\u003ePlug-and-play OEM harnesses and composite mounting enclosures for factory Jeep locations with no custom fabrication required\u003c\/li\u003e\n\u003cli\u003eOptimized crossover network (12dB midrange \/ 6dB tweeter) delivers clear highs, strong midrange detail and balanced full range sound\u003c\/li\u003e\n\u003cli\u003eRugged construction with high-quality cones, tweeters, and enclosures built to withstand demanding driving conditions\u003c\/li\u003e\n\u003cli\u003eFrequency response: 75 Hz – 23 kHz\u003c\/li\u003e\n\u003cli\u003eSensitivity level: 89 dB\u003c\/li\u003e\n\u003cli\u003eMaterial: Metal, Plastic\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003cli\u003eDimensions (L x W x H): 22.24 x 18.34 x 10.59 inches\u003c\/li\u003e\n\u003cli\u003eWeight: 25 pounds\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"zhnwhu\" data-start=\"28\" data-end=\"176\"\u003e\n\u003cstrong data-start=\"30\" data-end=\"57\"\u003eComplete Stage 4 system\u003c\/strong\u003e – A comprehensive audio upgrade engineered specifically for Jeep Wrangler JL (2018–2026) and Gladiator JT (2020–2026).\u003c\/li\u003e\n\u003cli data-section-id=\"16cneug\" data-start=\"177\" data-end=\"309\"\u003e\n\u003cstrong data-start=\"179\" data-end=\"208\"\u003ePremium sound performance\u003c\/strong\u003e – Delivers powerful bass, detailed mids, and crisp highs for a rich, immersive listening experience.\u003c\/li\u003e\n\u003cli data-section-id=\"w8mf9z\" data-start=\"310\" data-end=\"433\"\u003e\n\u003cstrong data-start=\"312\" data-end=\"344\"\u003eVehicle-specific integration\u003c\/strong\u003e – Custom-fit components and plug-and-play wiring provide a clean OEM-style installation.\u003c\/li\u003e\n\u003cli data-section-id=\"craxva\" data-start=\"434\" data-end=\"556\"\u003e\n\u003cstrong data-start=\"436\" data-end=\"467\"\u003eBuilt for rugged conditions\u003c\/strong\u003e – Durable, high-quality components are designed to perform reliably on and off the road.\u003c\/li\u003e\n\u003cli data-section-id=\"gfz5nk\" data-start=\"557\" data-end=\"691\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"559\" data-end=\"586\"\u003eUpgrade with confidence\u003c\/strong\u003e – An ideal choice for Jeep owners seeking premium audio, seamless fitment, and long-lasting performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:d68d56ed-86be-4638-94f1-db0e8877ad20-8\" 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-WEB:d68d56ed-86be-4638-94f1-db0e8877ad20-8\" data-turn-id-container=\"request-WEB:d68d56ed-86be-4638-94f1-db0e8877ad20-8\" data-testid=\"conversation-turn-18\" 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=\"7beac92c-09fc-4fcd-9578-4846dcee46c9\" 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=\"9\" data-end=\"175\"\u003e\u003cstrong data-start=\"9\" data-end=\"76\"\u003eQ: Which vehicles is this Stage 4 audio system compatible with?\u003c\/strong\u003e\u003cbr data-start=\"76\" data-end=\"79\"\u003eA: It is designed for \u003cstrong data-start=\"101\" data-end=\"131\"\u003e2018–2026 Jeep Wrangler JL\u003c\/strong\u003e and \u003cstrong data-start=\"136\" data-end=\"167\"\u003e2020–2026 Jeep Gladiator JT\u003c\/strong\u003e models.\u003c\/p\u003e\n\u003cp data-start=\"177\" data-end=\"382\"\u003e\u003cstrong data-start=\"177\" data-end=\"227\"\u003eQ: What does the Stage 4 audio system include?\u003c\/strong\u003e\u003cbr data-start=\"227\" data-end=\"230\"\u003eA: It includes a complete vehicle-specific audio upgrade with speakers, amplifiers, a subwoofer, and plug-and-play wiring for premium sound performance.\u003c\/p\u003e\n\u003cp data-start=\"384\" data-end=\"545\"\u003e\u003cstrong data-start=\"384\" data-end=\"425\"\u003eQ: Is this a direct-fit installation?\u003c\/strong\u003e\u003cbr data-start=\"425\" data-end=\"428\"\u003eA: Yes. The system is engineered for a factory-style fit with vehicle-specific components that simplify installation.\u003c\/p\u003e\n\u003cp data-start=\"547\" data-end=\"720\"\u003e\u003cstrong data-start=\"547\" data-end=\"601\"\u003eQ: Will this system improve factory audio quality?\u003c\/strong\u003e\u003cbr data-start=\"601\" data-end=\"604\"\u003eA: Yes. It delivers louder output, deeper bass, and clearer highs for a significantly enhanced listening experience.\u003c\/p\u003e\n\u003cp data-start=\"722\" data-end=\"911\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"722\" data-end=\"771\"\u003eQ: Is the system built for Jeep off-road use?\u003c\/strong\u003e\u003cbr data-start=\"771\" data-end=\"774\"\u003eA: Yes. The components are designed to withstand vibration and demanding outdoor conditions while providing reliable, high-quality audio.\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\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:15fe7131-5e31-460b-8cf4-9b2bd82a8b69-8\" 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-WEB:15fe7131-5e31-460b-8cf4-9b2bd82a8b69-8\" data-turn-id-container=\"request-WEB:15fe7131-5e31-460b-8cf4-9b2bd82a8b69-8\" data-testid=\"conversation-turn-18\" 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=\"78628eb9-4951-4008-9947-b659281d6c0a\" 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=\"22\" data-end=\"468\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"hoy5fo\" data-start=\"22\" data-end=\"103\"\u003eClean speakers, amplifier, and grilles with a soft, dry or slightly damp cloth.\u003c\/li\u003e\n\u003cli data-section-id=\"iadz2w\" data-start=\"104\" data-end=\"204\"\u003eRegularly inspect wiring, terminals, and mounting hardware for secure, corrosion-free connections.\u003c\/li\u003e\n\u003cli data-section-id=\"ouobwd\" data-start=\"205\" data-end=\"289\"\u003eKeep amplifier cooling vents free from dust and debris to maintain proper airflow.\u003c\/li\u003e\n\u003cli data-section-id=\"wkznpt\" data-start=\"290\" data-end=\"375\"\u003eAvoid direct high-pressure water spray on audio components during vehicle cleaning.\u003c\/li\u003e\n\u003cli data-section-id=\"s0205b\" data-start=\"376\" data-end=\"468\" data-is-last-node=\"\"\u003eCheck speaker grilles and system performance periodically to ensure clear, reliable sound.\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","brand":"MB Quart","offers":[{"title":"Default Title","offer_id":45829143756991,"sku":"422643","price":637.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/422643_main.jpg?v=1783516531","url":"https:\/\/www.mybackyardzone.com\/products\/mb-quart-mbqj-stg4ah-1-800w-stage-4-jeep-jl-jt-car-audio-4-speaker-system-kit","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}