Single 12" Back Loaded Horn Subwoofer Enclosure - 36Hz

This Rear-Loaded Horn subwoofer enclosure is engineered for builders and competitors seeking maximum efficiency and extreme SPL performance from a single 12-inch driver. Designed around the Skar Audio VXF-12 or similar high-power, high-excursion subwoofers, this enclosure delivers the kind of output typically associated with much larger systems.

Horn-loaded designs excel by converting cone motion into highly efficient acoustic output, allowing the subwoofer to play louder with less power compared to traditional sealed or vented enclosures. This makes the design ideal for competition-level setups, demo vehicles, and enthusiasts chasing aggressive, hard-hitting bass.

Tuned to 36Hz, this rear-loaded horn focuses on strong mid-bass to low-bass impact with exceptional projection and authority. The enclosure is optimized for SPL performance while maintaining controlled airflow and proper horn expansion for reliable operation under extreme conditions.

External Dimensions

L x W x H: 3 in x 30 in x 13.5 in

Designed for Competition-Level Performance

• Rear-loaded horn architecture for superior efficiency

• Increased acoustic loading for higher SPL output

• Optimized for high-power 12″ subwoofers

• Ideal for competitive builds and aggressive demo systems

This enclosure is not a traditional musical daily-driver box—it is purpose-built for those who prioritize loudness, efficiency, and performance over compact simplicity.

Digital Plan Includes

• Complete cut sheets and dimensions

• Internal horn path layout

• Panel orientation and assembly guidance

• 3D reference views for accurate construction

This digital plan is perfect for experienced DIY builders, competitors, and serious bass enthusiasts looking to extract maximum performance from a single 12-inch subwoofer.

⚠️ Competition & Usage Disclaimer

This Rear-Loaded Horn enclosure is designed specifically for competition-level SPL performance and aggressive demo use. Due to the nature of horn-loaded designs, this enclosure places increased mechanical and thermal demands on the subwoofer.

• This design is not intended for casual daily listening

• Proper amplifier tuning, filtering, and gain control are required

• Recommended use includes SPL competitions, demos, and short-duration high-output playback

• Continuous full-range bass playback at high volume may result in subwoofer damage

• Users should apply appropriate high-pass, low-pass, and subsonic filtering to protect the driver

This enclosure is best suited for experienced builders and competitors who understand horn-loaded systems and are seeking maximum output and efficiency rather than broad musical response.

By purchasing and building this design, the user acknowledges the specialized nature of this enclosure and accepts responsibility for proper setup, tuning, and operation.