{"product_id":"mb-quart-jeep-wrangler-jl-stage-7-system-oem-sub-upgrade-2018-2023","title":"MB Quart Jeep Wrangler JL Stage 7 System, OEM Sub Upgrade (2018-2023)","description":"\u003cp\u003e\u003cstrong\u003eThe MB Quart MBQJL-STG7-SUBR-1 is a 1200 watt Jeep Wrangler audio upgrade package for the 2018-2023 Wrangler JL with the factory premium subwoofer: it combines MB Quart's MBQJ-STG4A-1 Stage 4 front speakers and two 400 watt amplifiers with a 10 inch OEM subwoofer upgrade with a 400 watt amplifier and 6x9 inch rear soundbar speakers, all running from the factory radio.\u003c\/strong\u003e MB Quart describes it as plug-and-play installation using OEM harnesses.\u003c\/p\u003e\n\u003cp\u003eMB Quart bundles 3 products in this package: MBQJ-STG4A-1, MBQJL-SUBR-1, JC1-169SB. Buying them together gets a matched front, bass and rear system in one order. Because the subwoofer reuses the factory premium subwoofer enclosure, this version only applies to Wranglers that have it; otherwise choose the MBQJL-STG7-1.\u003c\/p\u003e\n\u003cp\u003eAs a Jeep Wrangler sound system, it covers the front, the bass and the rear: the Jeep Wrangler speaker upgrade up front, a Jeep JL subwoofer upgrade for bass (a Jeep Wrangler subwoofer upgrade that reuses the factory enclosure), and Jeep Wrangler speakers in the rear soundbar. It is a complete Jeep sound system and Jeep Wrangler stereo upgrade in one order. It doubles as a Jeep JL audio upgrade rated at 1200 watt total system power.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwo 3.5 inch coaxial dash speakers with 0.75 inch dome tweeters\u003c\/li\u003e\n\u003cli\u003eTwo 6.5 inch midbass drivers with lightweight pop paper cones in a mica blend\u003c\/li\u003e\n\u003cli\u003eComposite front speaker enclosures that drop in as a direct replacement for the factory enclosures, with an integrated OEM module mounting location\u003c\/li\u003e\n\u003cli\u003eTwo 400 watt full range, two channel Class D amplifiers (compact NA2 amplifiers with on-board equalization) on a powder coated mounting plate\u003c\/li\u003e\n\u003cli\u003eAAMPRO plug and play interface so the system runs from the factory source unit\u003c\/li\u003e\n\u003cli\u003e10 inch long-throw, high output subwoofer wired at 2 ohm that installs in the factory premium audio subwoofer enclosure and location\u003c\/li\u003e\n\u003cli\u003e400 watt high efficiency Class D subwoofer amplifier\u003c\/li\u003e\n\u003cli\u003eTwo 6x9 inch rear coaxial speakers with 1 inch magnesium dome tweeters and removable phase lenses, behind an OEM-match replacement grill\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt To Solve: A Weak Factory Sound System in the Jeep Wrangler JL\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFactory front speakers and amplification that distort or fade with the top and doors off\u003c\/li\u003e\n\u003cli\u003eLittle or no low-end bass from the stock system\u003c\/li\u003e\n\u003cli\u003eWeak rear sound for passengers\u003c\/li\u003e\n\u003cli\u003ePiecing together speakers, amps and wiring that were not designed for each other\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBest For: 2018-2023 Wrangler JL Owners Who Want a Complete MB Quart System on the Factory Radio\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOwners keeping the factory radio who want a full front, bass and rear upgrade in one package\u003c\/li\u003e\n\u003cli\u003eOnly Wranglers with the OEM premium audio subwoofer enclosure\u003c\/li\u003e\n\u003cli\u003eOnly the model years listed in Fitment; the MBQJL-STG7-SUBR-24+ covers the other model years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePackage contents (per MB Quart): MBQJ-STG4A-1 800 watt Stage 4 front system for the factory radio (two 3.5 inch dash coaxials, two 6.5 inch midbass drivers, composite front enclosures, two 400 watt amplifiers, AAMPRO interface); MBQJL-SUBR-1 10 inch OEM subwoofer upgrade with 400 watt amplifier; JC1-169SB 6x9 inch rear soundbar speakers\u003c\/li\u003e\n\u003cli\u003eFront speakers: crossover 12dB midrange \/ 6dB tweeter, frequency response 75Hz to 23kHz, sensitivity 89dB, 300W max \/ 150W RMS\u003c\/li\u003e\n\u003cli\u003eFront amplifiers: two 400 watt full range, two channel Class D\u003c\/li\u003e\n\u003cli\u003eSubwoofer: 10 inch, 2 ohm, frequency response 20Hz to 250Hz, sensitivity 87dB\u003c\/li\u003e\n\u003cli\u003eSubwoofer amplifier: 400 watt Class D\u003c\/li\u003e\n\u003cli\u003eMounting: uses the OEM premium audio subwoofer enclosure and location\u003c\/li\u003e\n\u003cli\u003eRear speakers: two 6x9 inch coaxial, 6dB high-pass, frequency response 45Hz to 23kHz, sensitivity 86dB, 220W max \/ 110W RMS\u003c\/li\u003e\n\u003cli\u003eTotal system power: 1200 watts\u003c\/li\u003e\n\u003cli\u003eSource unit: uses the OEM source unit\u003c\/li\u003e\n\u003cli\u003eInstall: basic hand tools\u003c\/li\u003e\n\u003cli\u003eColor: Black; warranty: 1 year\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: MBQJL-STG7-SUBR-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eMB Quart lists this product for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJeep® Wrangler (JL) 2018-2023 (with the OEM premium audio subwoofer enclosure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRequires the OEM premium audio subwoofer enclosure.\u003c\/p\u003e\n\u003cp\u003eThis is a Jeep (on-road vehicle) audio product, not a UTV part. Confirm your model, model year and factory audio equipment against MB Quart's listing before ordering; fitment is not guaranteed on applications not listed.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat is included in the MB Quart MBQJL-STG7-SUBR-1?\u003c\/h3\u003e\n\u003cp\u003eMB Quart lists MBQJ-STG4A-1 800 watt Stage 4 front system for the factory radio (two 3.5 inch dash coaxials, two 6.5 inch midbass drivers, composite front enclosures, two 400 watt amplifiers, AAMPRO interface); MBQJL-SUBR-1 10 inch OEM subwoofer upgrade with 400 watt amplifier; JC1-169SB 6x9 inch rear soundbar speakers.\u003c\/p\u003e\n\u003ch3\u003eWhich Jeeps does this package fit?\u003c\/h3\u003e\n\u003cp\u003eMB Quart lists Jeep® Wrangler (JL) 2018-2023 (with the OEM premium audio subwoofer enclosure). For the other model years, MB Quart sells the MBQJL-STG7-SUBR-24+.\u003c\/p\u003e\n\u003ch3\u003eDoes it work with the factory radio?\u003c\/h3\u003e\n\u003cp\u003eYes. MB Quart says the package uses the OEM source unit; the MBQJ-STG4A-1 front system includes an AAMPRO plug and play interface for the factory radio.\u003c\/p\u003e\n\u003ch3\u003eDoes my Wrangler need the factory subwoofer for this package?\u003c\/h3\u003e\n\u003cp\u003eYes. The MBQJL-SUBR-1 subwoofer installs in the OEM premium audio subwoofer enclosure and location. Without that enclosure, MB Quart's MBQJL-STG7-1 uses the MBQJL-302 tailgate subwoofer instead.\u003c\/p\u003e\n\u003ch3\u003eHow does the MBQJL-STG7-SUBR-1 compare with the MBQJL-STG9-SUBR-1?\u003c\/h3\u003e\n\u003cp\u003eThis package uses 6x9 inch rear soundbar speakers; the MBQJL-STG9-SUBR-1 swaps that for an RGB rear soundbar.\u003c\/p\u003e\n\u003ch3\u003eHow hard is the install?\u003c\/h3\u003e\n\u003cp\u003eMB Quart lists basic hand tools and plug-and-play installation using OEM harnesses. Follow the install manuals for each component.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy MB Quart\u003c\/h2\u003e\n\u003cp\u003eMB Quart builds vehicle-tuned audio packages for the Jeep Wrangler JL, engineered around the factory mounting locations and wiring so the upgrade installs with basic hand tools instead of custom fabrication. MB Quart sells its Jeep kits in stages, so you can start with one piece and add matching speakers, subwoofers or a soundbar later.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eComplete Your Jeep Wrangler JL Stage System\u003c\/h2\u003e\n\u003cp\u003eBefore ordering this Jeep Wrangler JL package, confirm your model year on the Fitment list and that your Wrangler has the factory premium subwoofer enclosure. MB Quart sells a separate version for the other model years (MBQJL-STG7-SUBR-24+), so order the one that matches your Jeep. The package covers the front, bass and rear and runs from the factory radio. Questions about fitment? Contact Dunes 2 Dezert SXS before you buy.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is included in the MB Quart MBQJL-STG7-SUBR-1?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"MB Quart lists MBQJ-STG4A-1 800 watt Stage 4 front system for the factory radio (two 3.5 inch dash coaxials, two 6.5 inch midbass drivers, composite front enclosures, two 400 watt amplifiers, AAMPRO interface); MBQJL-SUBR-1 10 inch OEM subwoofer upgrade with 400 watt amplifier; JC1-169SB 6x9 inch rear soundbar speakers.\"}}, {\"@type\": \"Question\", \"name\": \"Which Jeeps does this package fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"MB Quart lists Jeep® Wrangler (JL) 2018-2023 (with the OEM premium audio subwoofer enclosure). 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