8 INCH SUB BOX ENCLOSURES
Down4sound 8 inch ported sub box enclosures are built with high-quality materials, ensuring they can withstand the demands of high-powered car audio systems. The sturdy construction ensures longevity and protects your investment in your car's sound system. Here you will find all our 8 INCH "PROFAB" aka PREFAB sub boxes.
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Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure - 19+ GM/Chevy Crew Cab – 2.5-Inch Seat Lift Required
Down4Sound
MSRP: $649.99$399.99Designed 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...TD4S-PFB-GM1924-488SLMSRP: $649.99$399.99 -
Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure - 19+ GM/Chevy Crew Cab – Under Seat – No Lift
Down4Sound
MSRP: $649.99$399.99Engineered 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...TD4S-PFB-GM1924-488NLMSRP: $649.99$399.99 -
Down4Sound PRO-FAB DIY 10 - Single 10-Inch Ported Subwoofer Enclosure
Down4Sound
MSRP: $199.99$139.99Build your own high-performance subwoofer enclosure with the Down4Sound PRO-FAB Birch Flat Pack Single 10, a DIY ported sub box designed for audio enthusiasts and DIY lovers. This flat pack includes pre-cut birch panels, precision-engineered to deliver...DIY-PFB-BIRCH-10PMSRP: $199.99$139.99 -
Down4Sound PRO-FAB DIY Flat Pack - Single 8-Inch Ported Subwoofer Enclosure Kit
Down4Sound
MSRP: $199.99$139.99Down4sound - Single 8 Inch Ported Sub Box enclosure (PROFAB BOX) Take your DIY audio project to the next level with the Down4Sound PRO-FAB DIY Flat Pack, tailored for a single 8-inch subwoofer. This ported enclosure kit is precision-engineered to...DIY-PFB-188PMSRP: $199.99$139.99 -
Down4Sound PRO-FAB Birch DIY Flat Pack - Dual 8 -Inch Ported Subwoofer Enclosure Kit
Down4Sound
MSRP: $199.99$139.99Down4Sound PRO-FAB Birch Flat Pack Dual 8-Inch Ported Subwoofer Enclosure Box - DIY Kit with Precise Dimensions for Superior Bass Elevate your car audio game with the Down4Sound PRO-FAB Birch Flat Pack Dual 8, a DIY ported subwoofer enclosure kit...DIY-PFB-BIRCH-28PMSRP: $199.99$139.99 -
Down4Sound PRO-FAB - Birch - 2x 8-Inch Ported Subwoofer Enclosure - 07-13 GM/Chevy Crew Cab – No Lift
Down4Sound
MSRP: $649.99$399.99Tailored 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...TD4S-PFB-GMT713-880SPMSRP: $649.99$399.99 -
Down4Sound PRO-FAB - Birch - 2x 8-Inch Ported Subwoofer Enclosure – 19-24 GM/Chevy Crew Cab – No Lift
Down4Sound
MSRP: $649.99$399.99Tailored 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...TD4S-PFB-GMT1924-880SPMSRP: $649.99$399.99 -
Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure – 07-13 Chevy/GM Crew Cab – 2.5-Inch Seat Lift Required
Down4Sound
MSRP: $649.99$399.99Designed 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...TD4S-PFB-GMT713-480SPMSRP: $649.99$399.99 -
Down4sound PRO-FAB 4 8 | 4 8 Sub Box | Quad 8-Inch Ported Subwoofer Enclosure Box
Down4Sound
MSRP: $799.99$429.99Quad 8 Inch Ported Sub box Enclosure (4 - 8) Down4sound PRO-FAB 4 8: Get ready to experience powerful bass like never before with the PROFAB Quad 8 Sub Box Enclosure from Down4sound. This quad 8 sub box comes ported and is expertly crafted with premium...TD4S-Q4-8MSRP: $799.99$429.99Qty in Cart: 0Quantity:Price:MSRP: $799.99$429.99Subtotal:$0.00 -
Down4sound PRO-FAB 3 8 | 3 8 Sub Box | Triple 8-Inch Ported Subwoofer Enclosure Box
Down4Sound
MSRP: $649.99$389.99Down4sound - Triple 8 inch Ported Sub box Enclosure (PROFAB BOX) Experience Deep Bass Like Never Before This Triple 8 Inch Sub Box Enclosure is made with premium materials and expert craftsmanship, ensuring that it will withstand the test of time and...TD4S-3-8MSRP: $649.99$389.99Qty in Cart: 0Quantity:Price:MSRP: $649.99$389.99Subtotal:$0.00 -
Down4sound PRO-FAB 8 | 8 Sub Box | Single 8-Inch Ported Subwoofer Enclosure Box
Down4Sound
MSRP: $199.99$139.99Down4sound - Single 8 Inch Ported Sub Box enclosure (PROFAB BOX) High-Quality Construction for Ultimate Durability The Down4sound Single 8 Inch Ported Sub Box is built from premium-grade Canadian MDF, ensuring long-lasting durability. The reinforced...TD4S-PFB-S8MSRP: $199.99$139.99Qty in Cart: 0Quantity:Price:MSRP: $199.99$139.99Subtotal:$0.00
