JL Audio Dual 13.5" W7 Ported Enclosure

Custom Subwoofer Box Built for Bassheads

Engineered for serious JL Audio fans, this dual 13.5" W7 ported enclosure is precision-crafted to maximize performance and sound pressure. Designed exclusively for the JL Audio 13.5" W7 subwoofers, this custom box delivers tight, clean bass with a tuning frequency of 32 Hz.

Enclosure Specifications

• Net Internal Volume: 5.0 cubic feet
• Tuning Frequency: 32 Hz
• Port Area: 70.125 sq in
• Port Dimensions: 16.5" x 4.25"
• Subwoofer Cutout: 11.9"
• Material: 3/4" (18mm) Russian Baltic Birch plywood
• Baffle: 1" (24mm) solid front baffle (17-ply)
• Brace: 3/4" (18mm) internal baffle brace
• Finish: Carbon gray stain with polyurethane seal
• Pre-wired: 10 AWG OFC copper wire with satin nickel binding posts

Dimensions

• Height: 18"
• Width: 38.75"
• Depth: 20"

Performance & Durability

This isn't your average prefab box. Built in the USA, every Basshead Supply Branded Series enclosure is assembled using Titebond III wood glue, creating a durable and airtight design capable of handling up to 2000W RMS per subwoofer. That’s up to 4000W RMS total power handling for dual W7 setups!

The clean, professional look is achieved by eliminating visible screw holes during assembly, making this enclosure not only functional but visually sleek for demo builds and show vehicles.

Ready Out of the Box

Each enclosure comes pre-wired with heavy-duty 10-gauge OFC copper wire and high-quality recessed binding posts, so you're ready to drop in your JL Audio W7s and get loud right away.

Lead Time & Return Policy

Lead Time: 2–3 weeks

Note: This is a custom-built-to-order item. Once your enclosure is cut, all sales are final—no refunds.

Why Choose Basshead Supply?

At Basshead Supply, we specialize in subwoofer-specific enclosures that deliver peak performance, unmatched durability, and show-quality finishes—all at an affordable price. Whether you're daily driving or competing, our enclosures are built to keep up.

Proudly made in the USA.