

Down4Sound PRO-FAB DIY Flat Pack - Single 8-INCH Ported Subwoofer Enclosure Kit
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
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Subwoofer Wiring Diagram
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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 deliver deep, accurate bass and is crafted from premium materials for durability. With pre-cut panels and a straightforward assembly process, this enclosure is perfect for enthusiasts looking to build their own high-performance subwoofer box.
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Compatibility
Fits one 8-inch subwoofer -
Material
High-quality construction for optimal sound performance -
Dimensions
11.5" Depth x 24" Width x 9.75" Height -
Tuning Frequency
34 Hz -
Cutout Diameter
7.36 inches -
Terminal Rating
1000W -
Internal Volume
1 cubic foot (after displacement) -
Assembly Required
Yes – DIY kit with pre-cut pieces and easy-to-follow instructions -
Ideal For
DIY builders looking to customize their sound system with a single 8-inch subwoofer enclosure
***ALL SALES ARE FINAL***
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.

