SPL

The SPL Boxes SB212 Dual 12 in Sealed Subwoofer Enclosure is a heavy-duty, ready-to-install solution engineered for car audio enthusiasts who want clean, tight, and precise bass reproduction without the hassle of custom fabrication.

The SPL Boxes SB212SV is a heavy-duty dual 12 in shared chamber vented (ported) subwoofer enclosure built for enthusiasts who want deep, powerful bass without the hassle of custom fabrication.

The SPL Boxes SB212SV-BL is a heavy-duty, dual 12 in shared-vented (ported) subwoofer enclosure engineered for maximum bass output and structural endurance.

The SPL Boxes SB212TV-BL is a heavy-duty, dual 12" vented subwoofer enclosure engineered specifically to slide right behind the seat of your truck.

The SPL Boxes SB212V-KL is specifically engineered to handle the massive air displacement and unique physical footprint of dual square 12 in drivers.

The SPL Boxes SB215 Dual 15 in Sealed Subwoofer Enclosure is a heavy-duty, ready-to-install solution engineered for car audio enthusiasts who want clean, tight, and precise bass reproduction without the hassle of custom fabrication.

The SPL Boxes SB215SV is a heavy-duty dual 15 in shared chamber vented (ported) subwoofer enclosure built for enthusiasts who want deep, powerful bass without the hassle of custom fabrication.

The SPL Boxes SB215SV-BL is a heavy-duty, dual 15 in shared-vented (ported) subwoofer enclosure engineered for maximum bass output and structural endurance.

The SPL Boxes SB215V-KL is specifically engineered to handle the massive air displacement and unique physical footprint of dual square 15 in drivers.

The SPL Boxes SB312A is a premium, triple 12 in sealed angled-front subwoofer enclosure built to deliver tight, accurate bass impact while maximizing space efficiency.

The SPL Boxes SB362-210BL is engineered from the ground up to slide seamlessly under your rear seat, turning unused factory space into a hard-hitting sub enclosure.

Bring the bass to your truck with the SPL Boxes SB362-210VBL Custom-Fit Dual 10 in Ported Enclosure. Specifically engineered to sit discreetly under the rear seats of 2009–2026 Ford F-150 SuperCrew and 2017–2026 Ford F-250/F-350/F-450/F-550 SuperCrew trucks, this sub box delivers hard-hitting, low-end performance without sacrificing valuable cabin space.

The SPL Boxes SB362-212BL is engineered from the ground up to slide seamlessly under your rear seat, turning unused factory space into a hard-hitting sub enclosure.

Bring the bass to your truck with the SPL Boxes SB362-212VBL Custom-Fit Dual 12 in Ported Enclosure. Specifically engineered to sit discreetly under the rear seats of 2009–2026 Ford F-150 SuperCrew and 2017–2026 Ford F-250/F-350/F-450/F-550 SuperCrew trucks, this sub box delivers hard-hitting, low-end performance without sacrificing valuable cabin space.

Specifically engineered for a precise under-seat drop-in fit, the SPL Boxes SB362FF-208V-BL Dual Vented 8 in Subwoofer Enclosure is a premium front-firing box that delivers hard-hitting, low-end performance tailored perfectly to your truck's acoustics.

Specifically engineered for a precise under-seat drop-in fit, the SPL Boxes SB362FF-408V-BL Quad Vented 8 in Subwoofer Enclosure is a premium front-firing box that delivers hard-hitting, low-end performance tailored perfectly to your truck's acoustics.

The SPL Boxes SB372-210BL is a heavy-duty, vehicle-specific dual 10 in downfire subwoofer enclosure. It is custom-engineered to fit seamlessly under the rear seat of 2004–2008 Ford F-150 Extended Cab and SuperCrew trucks, maxing out your bass without sacrificing passenger legroom.

The SPL Boxes SB372-210VBL is a premium, custom-fit dual 10 in ported downfire subwoofer enclosure engineered specifically for 2009-current Ford F-150 SuperCrew pickup trucks.

The SPL Boxes SB372-212BL is a custom-engineered, vehicle-specific dual 12 in subwoofer enclosure designed to slide seamlessly under the rear seat of your 2004–2008 Ford F-150 Extended Cab or SuperCrew.

Unleash massive bass in your Ford Super Duty without sacrificing your cab space. The SPL Boxes SB391-210VBL is a custom-fit, dual 10 in vented subwoofer enclosure built specifically to slide right behind the rear seat of your 2000–2016 F-250, F-350, or F-450.