Product Description

LAB OEM-Spec™ Subwoofer Enclosures – Factory Precision. Aftermarket Build.
Exclusively for JL Audio subwoofers, we offer our LAB OEM-Spec™ line of subwoofer boxes. Using JL Audio's specific box designs, these enclosures are built employing the same quality construction as our SlapBox™ utilizing solid 3/4" CNC-cut high-grade MDF (medium density fiberboard). JL Audio's enclosure designs use less airspace—which increases power handling and allows for a smaller footprint.

OEM-Spec™ subwoofer enclosures are currently available for most JL Audio subwoofer drivers in both sealed and ported designs. Smaller size, increased power handling, and JL Audio's own box design make the OEM-Spec™ enclosure a solid choice.

• 🔧 Precision Fit
  Designed using JL Audio's official box specs to ensure ideal airspace, tuning, and subwoofer performance with no guesswork required.
• 🔊 Performance Tuned
  This model features 1.125 cu. ft. of internal volume and is tuned to 34Hz for clean output and strong low-frequency response.
• 🛠️ Built to Last
  Cut from CNC-machined 3/4" MDF and finished in premium black automotive-grade carpet for strength and style.
• 🚗 OEM Look. LAB Sound.
  Slim enough for shallow-mount installs and engineered for maximum performance—designed, built, and tuned in California.

📦 Features

• Vented enclosure designed for a single 12" JL Audio TW1 subwoofer
• Built using JL Audio's recommended ported design (compatible with 12TW1-2 / 12TW1-4)
• 1.125 cu. ft. internal volume (net), tuned to 34Hz
• Precision-cut 3/4" high-grade MDF construction
• Wrapped in premium black automotive-grade carpet
• Standard speaker terminal
• Proudly made in California, U.S.A.

📊 Technical Specifications

• Enclosure volume: 1.125 ft³ (net internal)
• Peak tuning frequency (Fb): 34Hz
• F3: 31.52Hz
• Subwoofer cutout diameter: 11.0625" (11-1/16")
• External dimensions: 31.75" W x 16" H x 7" D