12 Inch Subwoofer Boxes

Looking for a 12 inch subwoofer box that delivers clean, powerful bass? At Audio Intensity, we design and build enclosures that maximize output without sacrificing accuracy. Whether you need a sealed subwoofer box for tight response or a ported subwoofer box for extra volume, our Proline-X series uses CNC precision cuts, premium MDF, and acoustic engineering for consistent results. Every enclosure ships free and comes backed by our 2-year warranty. Explore our full selection below.

All About 12-Inch Subwoofer Boxes

Twelve-inch subwoofers are the most popular size for good reason: they balance deep low-end extension with responsive punch. A 12 inch subwoofer box provides the ideal airspace and structural support to let your woofer perform at its peak. At Audio Intensity, we build sealed, ported, and down-firing 12 inch enclosures, giving you the flexibility to match your sound preference and available space.

Our Proline-X Performance and Professional Series enclosures use advanced joinery techniques, dado construction, and threaded inserts for long-lasting durability. Whether you’re pairing an Alpine R Series Subwoofer or an Image Dynamics IDMAX, you’ll find boxes tuned and sized to manufacturer specifications.

Choosing between sealed and ported? Sealed enclosures deliver tighter, more accurate bass, while ported boxes provide greater output and lower extension — ideal for hip-hop, EDM, or rock fans. For smaller builds, check out our 10 inch subwoofer boxes, or for maximum bass, upgrade to our 15 inch subwoofer boxes.