{"title":"Subwoofer Boxes by Configuration - 4x8","description":"\u003cp\u003eBrowse the 4x8 subwoofer box configuration path for quad 8-inch truck enclosures. For the cleanest direct shopping page, use \u003ca href=\"\/collections\/4x8-subwoofer-boxes\"\u003e4x8 Subwoofer Boxes\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"ssboxes-dodge-ram-crew-cab-2019-up-4x8-subwoofer-box","title":"SSBOXES Dodge RAM Crew Cab 2019-Up Quad 8-Inch Subwoofer Box","description":"\u003cp\u003eSSBOXES Dodge RAM Crew Cab 2019-up quad 8-inch subwoofer box gives RAM truck owners a clean under-seat enclosure for a stronger four-sub bass setup.\u003c\/p\u003e\u003ch2\u003eDodge RAM Crew Cab 4x8 Subwoofer Box\u003c\/h2\u003e\u003cp\u003eThis enclosure is made for customers searching for a 4x8, 4 8, or quad 8 subwoofer box for a RAM Crew Cab. It is built for truck audio systems that need more cone area than a dual 8 setup while keeping a vehicle-specific under-seat layout.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: Dodge RAM Crew Cab\u003c\/li\u003e\n\u003cli\u003eManufacturer fitment note: 2019-up applications\u003c\/li\u003e\n\u003cli\u003eCab style: Crew Cab\u003c\/li\u003e\n\u003cli\u003eLocation: Under rear seat\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Four 8-inch subwoofers\u003c\/li\u003e\n\u003cli\u003eSKU: SS-RAM-2019-UP-4X8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBox Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConfiguration: 4x8 truck subwoofer enclosure\u003c\/li\u003e\n\u003cli\u003eAir space: 2.55 cubic feet\u003c\/li\u003e\n\u003cli\u003eMounting depth: 7.5 inches\u003c\/li\u003e\n\u003cli\u003eFinish: Bedliner spray coating\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use\u003c\/h3\u003e\u003cp\u003eChoose this box for a RAM Crew Cab build where you want four 8-inch subs, strong truck bass, and a durable vehicle-specific enclosure instead of a universal box.\u003c\/p\u003e\u003ch3\u003eFitment Note\u003c\/h3\u003e\u003cp\u003eConfirm your exact year, cab style, seat layout, floor shape, and subwoofer mounting depth before ordering or installation.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336108212314,"sku":"SS-RAM-2019-UP-4X8","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/4bd58695-dodge-ram-box.webp?v=1778262871"},{"product_id":"ssboxes-chevy-silverado-gmc-sierra-2014-2018-crew-cab-4x8-subwoofer-box","title":"SSBOXES Chevy Silverado\/GMC Sierra Crew Cab 2014-2018 Quad 8-Inch Ported Subwoofer Box","description":"\u003cp\u003eSSBOXES quad 8-inch ported subwoofer box fits 2014-2018 Chevy Silverado and GMC Sierra Crew Cab trucks under the rear seat.\u003c\/p\u003e\u003ch2\u003eCustom-Fit Quad 8-Inch Truck Subwoofer Enclosure\u003c\/h2\u003e\u003cp\u003eThis front-firing ported enclosure is built for customers who want serious bass in a Chevy Silverado or GMC Sierra Crew Cab while preserving cabin space and rear-seat usability.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: 2014-2018 Chevrolet Silverado Crew Cab\u003c\/li\u003e\n\u003cli\u003eFits: 2014-2018 GMC Sierra Crew Cab\u003c\/li\u003e\n\u003cli\u003eLocation: Under rear seat\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Four 8-inch subwoofers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: SSBOXES\u003c\/li\u003e\n\u003cli\u003eBox type: Ported subwoofer enclosure\u003c\/li\u003e\n\u003cli\u003eAir space: 2.6 cubic feet\u003c\/li\u003e\n\u003cli\u003eMounting depth: 8.5 inch\u003c\/li\u003e\n\u003cli\u003eMaterial: MDF\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use\u003c\/h3\u003e\u003cp\u003eUse this box for Silverado and Sierra truck audio builds that need loud bass, clean fitment, and a customer-friendly under-seat installation.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336108933210,"sku":"SSCH14CC-4X8","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/2440aa0c-SS-SSCH14CC-4x81-1.webp?v=1778262876"},{"product_id":"ssboxes-chevy-silverado-gmc-sierra-2500-3500-extended-cab-4x8-front-fire-ported-subwoofer-box","title":"SSBOXES Chevy Silverado\/GMC Sierra 2500\/3500 Extended Cab Quad 8-Inch Front-Fire Ported Subwoofer Box","description":"\u003cp\u003eSSBOXES front-fire quad 8-inch ported subwoofer box is built for Chevy Silverado and GMC Sierra Extended Cab 2500\/3500 HD trucks with the matching rear-seat floor layout.\u003c\/p\u003e\u003ch2\u003eChevy\/GMC 2500 and 3500 Extended Cab 4x8 Front-Fire Box\u003c\/h2\u003e\u003cp\u003eThis enclosure is for customers searching for a 4x8, 4 8, or quad 8 subwoofer box for a Chevy or GMC Extended Cab HD truck. It is designed for strong truck bass with a front-fire ported layout and a heavy-duty bedliner-style coating.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: Chevy Silverado Extended Cab 2500 and 3500 HD models with the same seating\/floor style\u003c\/li\u003e\n\u003cli\u003eFits: GMC Sierra Extended Cab 2500 and 3500 HD models with the same seating\/floor style\u003c\/li\u003e\n\u003cli\u003eDoes not fit Crew Cab models\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Four 8-inch subwoofers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBox Dimensions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLength: 54 inches\u003c\/li\u003e\n\u003cli\u003eWidth: 14.75 inches\u003c\/li\u003e\n\u003cli\u003eFront height: 10 inches\u003c\/li\u003e\n\u003cli\u003eRear height: 7 inches\u003c\/li\u003e\n\u003cli\u003eMounting depth: 8.75 inches\u003c\/li\u003e\n\u003cli\u003eWoofer cutouts: 7.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePort and Build Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePort length: 9.5 inches\u003c\/li\u003e\n\u003cli\u003ePort width: 2.5 inches\u003c\/li\u003e\n\u003cli\u003ePort height: 3.75 inches\u003c\/li\u003e\n\u003cli\u003eAir space per sub: 0.7 cubic feet\u003c\/li\u003e\n\u003cli\u003eBox tuning: 37 Hz\u003c\/li\u003e\n\u003cli\u003eWood type: High-quality MDF\u003c\/li\u003e\n\u003cli\u003eFinish: Black Armor bedliner-style coating\u003c\/li\u003e\n\u003cli\u003eSpeaker terminals included\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstall Notes\u003c\/h3\u003e\u003cp\u003eSpeaker wire and metal screws are not included. Confirm your exact cab style, seat layout, floor shape, and mounting depth before ordering or installing.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336109097050,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/e0f50b89-s-l1600-1.webp?v=1778262876"},{"product_id":"ssboxes-chevy-silverado-gmc-sierra-crew-cab-2014-up-4x8-ported-subwoofer-box","title":"SSBOXES Chevy Silverado\/GMC Sierra Crew Cab 2014-Up Quad 8-Inch Ported Subwoofer Box","description":"\u003cp\u003eSSBOXES quad 8-inch ported subwoofer box fits Chevy Silverado and GMC Sierra Crew Cab trucks for a clean under-seat truck bass upgrade.\u003c\/p\u003e\u003ch2\u003eChevy Silverado \/ GMC Sierra Crew Cab 4x8 Ported Box\u003c\/h2\u003e\u003cp\u003eThis enclosure is made for customers searching for a 4x8, 4 8, or quad 8 subwoofer box with vehicle-specific fitment instead of a loose universal enclosure. It is built for truck audio systems that need strong bass while keeping the cabin layout clean.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: Chevy Silverado Crew Cab and GMC Sierra Crew Cab\u003c\/li\u003e\n\u003cli\u003eManufacturer fitment note: 2014-up Crew Cab applications\u003c\/li\u003e\n\u003cli\u003eCab style: Crew Cab\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Four 8-inch subwoofers\u003c\/li\u003e\n\u003cli\u003eSKU: SS8CH19CC48\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBox Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConfiguration: Ported 4x8 subwoofer box\u003c\/li\u003e\n\u003cli\u003eAir space: 2.75 cubic feet\u003c\/li\u003e\n\u003cli\u003eMounting depth: 9.5 inches\u003c\/li\u003e\n\u003cli\u003eFinish: Bedliner spray coating\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use\u003c\/h3\u003e\u003cp\u003eChoose this box for a Silverado or Sierra Crew Cab build where you want four 8-inch subs under the rear seat with a ported enclosure designed for truck bass.\u003c\/p\u003e\u003ch3\u003eFitment Note\u003c\/h3\u003e\u003cp\u003eVehicle trim, seat style, floor layout, and aftermarket equipment can affect fitment. Confirm your exact year, cab style, and available mounting depth before installation.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336109391962,"sku":"SS8CH19CC48","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/ec1b67ea-SS8CH19CC48.avif?v=1778262876"}],"url":"https:\/\/supercaraudio.com\/collections\/subwoofer-boxes-by-sub-configuration-4x8.oembed","provider":"Super Car Audio","version":"1.0","type":"link"}