PREFAB AKA "PRO-FAB" SUBWOOFER BOXES

Tailored for the 1999-2007 GM/Chevy Extended Cab, this Down4Sound PRO-FAB enclosure is designed for serious bass enthusiasts. Featuring four 8-inch subwoofer openings, it delivers precision-tuned bass output with a tuning frequency of 32.5 Hz. Crafted...

Designed for the 2019+ GM/Chevy Crew Cab, this Down4Sound PRO-FAB enclosure is tailored for audio enthusiasts seeking deep, powerful bass. Featuring four 8-inch subwoofer openings, it is precision-tuned to 32.5 Hz to ensure excellent sound performance...

Engineered for the 2019+ GM/Chevy Crew Cab, the Down4Sound PRO-FAB enclosure is designed to deliver powerful and precise bass. With four 8-inch subwoofer openings, this enclosure fits seamlessly under the rear seat without the need for a seat lift...

Tailored for the 2007-2013 GM/Chevy Crew Cab, this Down4Sound PRO-FAB enclosure delivers powerful, precise bass with dual 8-inch subwoofer openings. Designed to fit seamlessly under the rear seat without requiring a lift kit, it ensures easy installation...

Tailored specifically for 2019-2024 GM/Chevy Crew Cab models, the Down4Sound PRO-FAB enclosure is designed to provide precise, impactful bass without requiring a seat lift. Featuring dual 8-inch subwoofer openings, this enclosure is crafted from premium...

Designed specifically for 2007-2013 Chevy/GM Crew Cab trucks, the Down4Sound PRO-FAB (Quad) enclosure is engineered to deliver ground-shaking bass. With four 8-inch subwoofer openings, this ported enclosure is built from premium birch wood and coated...

Designed specifically for 1999-2007 Chevy/GMC Crew Cab trucks, the Down4Sound PRO-FAB (Quad) enclosure is built to deliver exceptional bass performance. With four 6.5-inch subwoofer openings, this ported enclosure fits perfectly behind the rear seat,...

Quad 10 Inch Ported Sub box Enclosure (4 - 10) Down4sound PRO-FAB 4 10 Introducing the prefab aka profab Quad 10 Inch ported Sub Box, the ultimate solution to elevate your car audio experience. This high-end subwoofer box by Down4sound features a...

Triple 10 Inch Ported Sub box Enclosure (3 - 10) Down4sound PRO-FAB If you're a true music lover, you know that the right bass can make all the difference. With the Down4sound (3-10) Triple 10 Inch Ported Sub box Enclosure from Down4sound PREFAB aka...

Down4sound Dual 12 Inch Ported PROFAB Sub box Enclosure (2 - 12): Down4sound PRO-FAB 12 | 2 12 Sub Box | Dual 12-Inch Ported Subwoofer Enclosure Box Looking for a sub box to enhance your car audio system? Look no further than our selection of 12...

Single 12 Inch Ported Sub box Enclosure (1 - 12) Down4sound PRO-FAB 12 Get the most Powerful Bass available in a prefab 12-Inch Ported Sub Box. Upgrade your car audio system with the Single 12 Inch Ported Sub box Enclosure from Down4sound PRO-FAB. This...

 *****Sales are final***** **** MADE IN THE USA ****   Our goal with the Down4sound Prefab enclosures are to offer an amazing, low tuned enclosure at an affordable price. When searching the internet at all the cheap options...