Dual 15” Ported Subwoofer Box XL (30Hz) – Deep Bass SPL Enclosure
Built for serious low-frequency performance, this dual 15” ported subwoofer box is engineered to deliver deep, ground-shaking bass with precision. Designed as a universal fit enclosure, it’s ideal for SUVs, trucks, and trunk builds where maximum airspace and low tuning are key to achieving powerful output.
Unlike standard enclosures tuned higher for loudness alone, this 15” ported subwoofer box is tuned to 30Hz—allowing it to hit deeper frequencies with authority. The result is stronger sub-bass response, better low-end extension, and a more immersive listening experience whether you're playing music or demoing your system.
With a large 7.27 ft³ internal airspace, this dual 15 subwoofer box is optimized for high-performance drivers that require room to breathe. The up-fire style layout enhances cabin loading and helps distribute bass more evenly, making it a strong choice for both daily setups and SPL-focused builds.
Constructed from full 3/4" high-grade MDF, this enclosure is built to handle high power without flexing or distortion. The rugged bed liner polymer spray finish adds long-term durability, protecting against scratches, moisture, and wear in demanding installs.
Available in both round and square (Kicker-specific) cutout configurations, this dual 15 inch subwoofer box gives flexibility to match your preferred subwoofers while maintaining proper fit and performance.
Key Features:
• Dual 15” ported subwoofer box with deep 30Hz tuning
• Large 7.27 ft³ airspace for high-output subwoofers
• Up-fire design for improved bass distribution
• 3/4" MDF construction for strength and reduced flex
• Bed liner spray finish for durability and protection
• Available in round and square (Kicker) cutouts
• Universal fit for trucks, SUVs, and trunk builds
• Made in the USA
Built for Deep Bass Performance:
This dual 15 inch subwoofer box ported design is ideal for those who want more than just loud bass—it’s built for depth, pressure, and low-end authority. The 30Hz tuning allows your system to hit lower notes with more impact, making it perfect for hip-hop, electronic music, and demo setups that demand presence.
Upgrade Option – SMD TCR-1 Terminal Cup:
Upgrade your wiring connection for high-power builds with the SMD TCR-1 terminal cup. Designed for serious systems, it supports up to 2000W while improving durability and signal reliability.
• Handles up to 2000W power
• Reinforced, leak-resistant design
• Stainless steel hardware for long-term use
• High-strength, lightweight construction
Specifications:
Width: 40"
Height: 16.5"
Depth: 24"
Mounting Depth: 23"
Cutout Diameter: 13.875"
Air Space: 7.27 ft³
Tuning Frequency: 30Hz
Weight: 71.45 lbs
Why Choose This Dual 15 Sub Box:
If you're looking for a dual 15 subwoofer box that delivers both depth and output, this enclosure provides the ideal balance. Its low tuning, large airspace, and durable construction make it a reliable foundation for high-performance systems without the guesswork of custom building your own box.
