{"title":"Subwoofer Enclosures Built to Order","description":"\u003ch2\u003eSubwoofer Enclosures Built to Order\u003c\/h2\u003e\u003cp\u003eShop built-to-order subwoofer enclosures from SMS Precision Series, including single and dual subwoofer box options for custom car audio systems. These enclosures are intended for customers who need a cleaner fit, stronger bass performance, and a custom-built solution for their vehicle or system layout.\u003c\/p\u003e\u003cp\u003eCompare enclosure options by subwoofer size, single or dual layout, vehicle style, build requirements, and system goals.\u003c\/p\u003e","products":[{"product_id":"chevy-underseat-subwoofer-box","title":"SMS Precision Chevy Underseat SMS Subwoofer Enclosure (built-to-order)","description":"\u003ch2\u003eSMS Precision Chevy Underseat SMS Subwoofer Enclosure (built-to-order)\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSMS Precision Chevy Underseat SMS Subwoofer Enclosure (built-to-order)\u003c\/strong\u003e is selected for reliable performance in a properly designed mobile audio system.\u003c\/p\u003e\n\u003ch3\u003eKey Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🔊 Chevy Underseat Subwoofer Enclosure – Build to Order\u003c\/li\u003e\n\u003cli\u003eUpgrade your truck with a precision-built underseat subwoofer enclosure , custom made for your exact Chevy model. Designed for maximum output and perfect under-seat fitment – no universal junk, no guesswork.\u003c\/li\u003e\n\u003cli\u003eEach enclosure is hand-built to order for strength, reliability, and clean installation.\u003c\/li\u003e\n\u003cli\u003e✅ Subwoofer Configuration Options\u003c\/li\u003e\n\u003cli\u003e4 × 8\" Subwoofers\u003c\/li\u003e\n\u003cli\u003e2 × 10\" Subwoofers\u003c\/li\u003e\n\u003cli\u003eConfiguration selected at checkout.\u003c\/li\u003e\n\u003cli\u003e✅ Vehicle Fitment\u003c\/li\u003e\n\u003cli\u003eChevy 1500 \/ 2500 \/ 3500\u003c\/li\u003e\n\u003cli\u003eCrew Cab Models\u003c\/li\u003e\n\u003cli\u003e2007–2018 WILL REQUIRE A SEAT LIFT (Additional Cost)\u003c\/li\u003e\n\u003cli\u003e2019–2025 typically does NOT require a seat lift\u003c\/li\u003e\n\u003cli\u003ePassenger or driver side options depending on model\u003c\/li\u003e\n\u003cli\u003e🪵 Finish Options\u003c\/li\u003e\n\u003cli\u003eBare Wood – ready for your own custom finish\u003c\/li\u003e\n\u003cli\u003eCarpeted – OEM clean look\u003c\/li\u003e\n\u003cli\u003eLined \/ Bedliner – durable \u0026amp; moisture resistant\u003c\/li\u003e\n\u003cli\u003eVinyl Face – show-grade front finish\u003c\/li\u003e\n\u003cli\u003e🔧 Available Add-On Upgrades\u003c\/li\u003e\n\u003cli\u003e🔨 45° Corner Upgrade\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Buy From SMS Car Audio?\u003c\/h3\u003e\n\u003cp\u003eAt SMS Car Audio, we do not just move boxes — we match the product to the vehicle, system goal, and install plan so the final result makes sense for the build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help choosing the right setup?\u003c\/strong\u003e Contact SMS Car Audio before ordering and we can help confirm fitment, power, wiring, and tuning direction.\u003c\/p\u003e","brand":"SMS Precision","offers":[{"title":"Default Title","offer_id":49915450261737,"sku":"CHEVY-UNDERSEAT","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0311\/8134\/0811\/files\/chevy-underseat-sms-subwoofer-enclosure-built-order-car-audio-522.webp?v=1767135702"},{"product_id":"ford-underseat-subwoofer-box","title":"SMS Precision Ford Underseat Subwoofer Box (built-to-order)","description":"\u003ch2\u003eSMS Precision Ford Underseat Subwoofer Box (built-to-order)\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSMS Precision Ford Underseat Subwoofer Box (built-to-order)\u003c\/strong\u003e is selected for reliable performance in a properly designed mobile audio system.\u003c\/p\u003e\n\u003ch3\u003eKey Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🔥 Built-to-Order | Vehicle-Specific Fitment | All Enclosures Require a Seat Lift\u003c\/li\u003e\n\u003cli\u003eUpgrade your Ford truck with a custom-built underseat enclosure designed to deliver clean, powerful bass without stealing cabin or cargo space . Every box is CNC-cut, internally braced, and built for real-world daily use.\u003c\/li\u003e\n\u003cli\u003e✔️ Vehicle Fitment\u003c\/li\u003e\n\u003cli\u003e2009 \u0026amp; Up Ford F-150 Crew Cab\u003c\/li\u003e\n\u003cli\u003eOther Ford models available upon request (message us to confirm)\u003c\/li\u003e\n\u003cli\u003e✔️ Subwoofer Options\u003c\/li\u003e\n\u003cli\u003e4 × 8-inch subwoofers\u003c\/li\u003e\n\u003cli\u003e2 × 8-inch subwoofers\u003c\/li\u003e\n\u003cli\u003e2 × 10-inch subwoofers (Select the correct configuration at checkout)\u003c\/li\u003e\n\u003cli\u003e✔️ Exterior Finish Options\u003c\/li\u003e\n\u003cli\u003eBare Wood – raw enclosure ready for your own finish\u003c\/li\u003e\n\u003cli\u003eCarpeted – clean OEM-style appearance\u003c\/li\u003e\n\u003cli\u003eBed-Lined – durable protective coating\u003c\/li\u003e\n\u003cli\u003eVinyl Face – premium look for show or daily use\u003c\/li\u003e\n\u003cli\u003e✔️ Add-On Features\u003c\/li\u003e\n\u003cli\u003e45° Corners Upgrade (+$100)\u003c\/li\u003e\n\u003cli\u003eLED Acrylic Plaque (Engraved) (+$200)\u003c\/li\u003e\n\u003cli\u003eLED Rings w\/ Controller (+$200)\u003c\/li\u003e\n\u003cli\u003eKicker 4-Bolt High-Power Terminals (+$50)\u003c\/li\u003e\n\u003cli\u003eAero Ports (Instead of Slot Port) (+$100)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Buy From SMS Car Audio?\u003c\/h3\u003e\n\u003cp\u003eAt SMS Car Audio, we do not just move boxes — we match the product to the vehicle, system goal, and install plan so the final result makes sense for the build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help choosing the right setup?\u003c\/strong\u003e Contact SMS Car Audio before ordering and we can help confirm fitment, power, wiring, and tuning direction.\u003c\/p\u003e","brand":"SMS Precision","offers":[{"title":"Default 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