Down4Sound PRO-FAB - Birch - 4X 8-INCH Ported Subwoofer Enclosure - 07-13 CHEVY/GM Crew CAB - 2.5-INCH Seat Lift Required
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Subwoofer Wiring Diagram
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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 with a polyurethane bedliner for enhanced durability. Featuring a square air port design, it’s precision-tuned for powerful and accurate bass performance. This enclosure fits seamlessly under the seat but requires a 2.5-inch seat lift for proper installation.
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Compatibility
2007-2013 Chevy/GM Crew Cab (Under Seat, 2.5-Inch Seat lift is required BUT IS NOT INCLUDED) -
Configuration
Quad 8-inch subwoofer openings -
Material
Premium birch wood with polyurethane bedliner coating for extra durability
Outside Dimensions
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Width
54 inches -
Front Height
12.5 inches -
Rear Height
11 inches -
Depth
14.75 inches
Net Airspace (After Displacements)
1.795 cubic feetSubwoofer Cutout: 7.32 inch
Port Information
- Type: Square air ports - DRIVERS & PASSENGER SIDE - 2 PORTS TOTAL
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Inner Surface Area
12.18 square inches -
Depth
9.91 inches (including cabinet thickness)
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Tuning Frequency
40.06 Hz
Recommended Subwoofer
Down4Sound DBz 8" Subwoofers
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