Product Description

LAB OEM-Spec™ Subwoofer Enclosures – Factory Precision. Aftermarket Build.

Exclusively engineered for JL Audio subwoofers, the LAB OEM-Spec™ line delivers factory-precision performance in a high-quality aftermarket build. Designed using JL Audio's own enclosure blueprints, each box is constructed with the same craftsmanship as our SlapBox™ series—featuring CNC-cut high-grade MDF. These enclosures are optimized to JL’s exact airspace and tuning specs, ensuring maximum efficiency, increased power handling, and a compact footprint.

OEM-Spec™ enclosures are available in both sealed and ported designs for most JL Audio drivers. Smaller in size but big on performance, this is the go-to solution for JL fans who want a true-to-spec experience—without compromise.

• 🔧 Precision Fit
  Each enclosure is built to match JL Audio's factory specifications, ensuring your subwoofer performs exactly as intended—no guesswork, no compromise.


• 🔊 Performance You Can Trust
  OEM-Spec™ sealed enclosures offer tight, responsive bass and natural roll-off—ideal for SQ-focused systems or space-conscious installs.


• 🛠️ Built to Last
  Constructed from CNC-cut 3/4" MDF with expert bracing and a clean finish, these enclosures are built to perform under pressure—without flex or fatigue.


• 🚗 OEM Look. LAB Sound.
  Designed for clean integration and stealthy installs, OEM-Spec™ boxes blend a factory aesthetic with serious aftermarket performance.

📦 Features

• Sealed shallow-mount enclosure designed for a single 10" JL Audio TW1 subwoofer
• Built using JL Audio's recommended sealed design (compatible with 10TW1-2 or 10TW1-4)
• 0.35 cu. ft. net internal volume (sealed)
• Precision-cut 3/4" high-grade MDF construction
• Wrapped in premium black automotive-grade carpet
• Upgraded 2" round nickel-plated binding post
• Proudly made in California, U.S.A.

📊 Technical Specifications

• Enclosure volume: 0.35 ft³ (net internal)
• F3 (low-end extension): 48.31Hz
• Fc (system resonance): 59.21Hz
• Qtc: 0.927
• Subwoofer cutout diameter: 9.0625" (9-1/16")
• External dimensions: 16.125" W x 14" H x 5.25" D