PREFAB AKA "PRO-FAB" SUBWOOFER BOXES
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On Sale
Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure - 99-07 GM/Chevy Extended Cab – 2.5-Inch Seat Lift Required
Down4Sound
MSRP: $802.85Now: $477.69Was: $561.99Tailored 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...TD4S-PFB-GM9907-488SLMSRP: $802.85Now: $477.69Was: $561.99 -
On Sale
Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure - 19+ GM/Chevy Crew Cab – 2.5-Inch Seat Lift Required
Down4Sound
MSRP: $869.75Now: $454.94Was: $535.23Designed 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: $869.75Now: $454.94Was: $535.23Qty in Cart: 0Quantity:Price:MSRP: $869.75Now: $454.94Was: $535.23Subtotal: -
On Sale
Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure - 19+ GM/Chevy Crew Cab – Under Seat – No Lift
Down4Sound
MSRP: $869.75Now: $454.94Was: $535.23Engineered 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: $869.75Now: $454.94Was: $535.23Qty in Cart: 0Quantity:Price:MSRP: $869.75Now: $454.94Was: $535.23Subtotal: -
On Sale
Down4Sound PRO-FAB DIY 10 - Single 10-Inch Ported Subwoofer Enclosure
Down4Sound
MSRP: $267.61Now: $159.22Was: $187.32Build 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: $267.61Now: $159.22Was: $187.32 -
DOWN4SOUND PRO-FAB Birch Flat Pack Dual 2 6.5 | DIY Ported Subwoofer Enclosure Box
Down4Sound
MSRP: $267.61$187.32Create your own high-performance subwoofer enclosure with the Down4Sound PRO-FAB Birch Flat Pack Dual 6.5, a DIY ported sub box crafted for exceptional sound quality and custom car audio projects. Designed for dual 6.5-inch subwoofers, this kit features...DIY-PFB-BIRCH-265PMSRP: $267.61$187.32 -
On Sale
Down4Sound PRO-FAB DIY Flat Pack - Single 8-Inch Ported Subwoofer Enclosure Kit
Down4Sound
MSRP: $267.61Now: $159.22Was: $187.32Down4sound - 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: $267.61Now: $159.22Was: $187.32 -
Down4Sound PRO-FAB Birch DIY Flat Pack - Dual 8 -Inch Ported Subwoofer Enclosure Kit
Down4Sound
MSRP: $267.61$187.32Down4Sound 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: $267.61$187.32 -
On Sale
Down4Sound PRO-FAB - Birch - 2x 8-Inch Ported Subwoofer Enclosure - 07-13 GM/Chevy Crew Cab – No Lift
Down4Sound
MSRP: $869.75Now: $454.94Was: $535.23Tailored 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: $869.75Now: $454.94Was: $535.23 -
On Sale
Down4Sound PRO-FAB - Birch - 2x 8-Inch Ported Subwoofer Enclosure – 19-24 GM/Chevy Crew Cab – No Lift
Down4Sound
MSRP: $869.75Now: $454.94Was: $535.23Tailored 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: $869.75Now: $454.94Was: $535.23 -
On Sale
Down4Sound PRO-FAB - Birch - 4x 8-Inch Ported Subwoofer Enclosure – 07-13 Chevy/GM Crew Cab – 2.5-Inch Seat Lift Required
Down4Sound
MSRP: $869.75Now: $454.94Was: $535.23Designed 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: $869.75Now: $454.94Was: $535.23 -
On Sale
Down4Sound PRO-FAB - Birch - 4x 6.5-Inch Ported Subwoofer Enclosure – 99-07 Chevy/GMC Crew Cab – Behind Seat
Down4Sound
MSRP: $802.85Now: $477.69Was: $561.99Designed 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,...TD4S-PFB-GMT713-465SPMSRP: $802.85Now: $477.69Was: $561.99 -
Down4sound PRO-FAB HD3- 2 12 Sub Box | Dual HD 12-Inch KERF Port Subwoofer Enclosure Box
Down4Sound
MSRP: $1,177.51$936.66Experience Extreme Sound with the PRO-FAB HD3 Dual 2 12 Inch KERF Ported Subwoofer HD Birch Enclosure Are you craving high-performance audio and extreme sound quality? Look no further than Down4sound's PRO-FAB HD3 Dual 12 Inch Ported Subwoofer HD Birch...HD3-2-12KPMSRP: $1,177.51$936.66