DC Audio Single 15" XL SPL Ported Enclosure

Designed specifically for the DC Audio XL SPL 15" subwoofer, this handcrafted 4.25 cu ft ported enclosure delivers deep, controlled bass with a 31 Hz tuning for high-performance SPL installs.

• Net Volume: 4.25 cubic feet — provides the airspace necessary for the XL SPL 15 to produce deep bass with a consistent response in a ported design.
• Tuning: 31 Hz — sets the low-end extension and bass character, emphasizing controlled, low-frequency output in a ported enclosure.
• Port Area: 62.0 sq in — a larger port area helps sustain low-end output at the tuning frequency while reducing port-induced turbulence.
• Port Size: 16.0" × 3.875" — rectangular port dimensions designed to deliver the specified airflow and tuning characteristics.
• Cutout: 14.0" — mounting diameter for the XL SPL 15" subwoofer with a precise, secure fit.
• Construction: 1" (24mm) Russian Baltic Birch — 17 ply, providing stiffness and rigidity to minimize cabinet flex and preserve accurate bass.
• Baffle: 1" front baffle — reinforces mounting strength and helps seal the woofer effectively against the enclosure.
• Finish: Carbon gray stain with polyurethane topcoat — durable, show-quality finish suited for trunk and install aesthetics.
• Wiring: Pre-wired 10ga OFC with metal binding posts — simplifies hookup and provides solid, low-resistance connections to the sub and amplifier.
• Power Rating: High power systems — designed to handle demanding amplifiers without compromising enclosure integrity.
• Dimensions: Height 18.0", Width 31.375", Depth 23.0" — footprint and depth specify how the enclosure fits in trunk or cargo areas.
• Handcrafted in the USA: Built by hand in the United States — attention to detail and quality control from domestic craftsmen.
• No visible screw holes: Exterior features zero visible screw holes for a clean, showroom-ready appearance.
• Glue and assembly: Fully glued with Titebond III for airtight integrity and long-term durability.
• Lead Time: Built to order; ships in 2–3 weeks — plan installation around the handcrafted production lead time.

In real-world builds, this enclosure provides a precise 4.25 cu ft airspace and 31 Hz tuning to enable deep bass with controlled extension from the DC XL SPL 15" driver. The Baltic Birch construction and solid front baffle ensure rigidity and airtight sealing, while the pre-wired wiring and metal binding posts simplify installation and electrical reliability. The finish and screw-hole-free exterior deliver a clean, professional appearance in trunk installations.