Custom Dual 12-Inch Vented Subwoofer Enclosure – 4.5 cu. ft. @ 30Hz

Built for serious bass enthusiasts, this Custom Dual 12-Inch Vented Subwoofer Enclosure is engineered to maximize the performance of high-power 12-inch subwoofers. Combining high efficiency, exceptional low-frequency output, and competition-inspired construction, this enclosure is designed to deliver powerful bass while remaining practical for everyday listening.

Featuring a Subs Forward / Port Forward configuration, this enclosure is ideal for vehicles that benefit from forward-firing woofers and port loading. This layout promotes excellent cabin gain utilization, impressive low-frequency reinforcement, and outstanding overall output.

Designed with 4.5 cubic feet of internal air space before subwoofer and port displacement and tuned to 30Hz, this enclosure delivers deep, authoritative bass with excellent musicality. From low-frequency demo tracks to everyday music and high-output systems, this enclosure is built to perform across a wide range of listening styles.

Constructed from 3/4-inch Medium Density Fiberboard (MDF), the enclosure incorporates premium structural reinforcements to withstand the extreme pressures generated by today's high-excursion subwoofers.

Enclosure Specifications

• Enclosure Type: Vented / Ported

• Subwoofer Configuration: Dual 12-Inch

• Orientation: Subs Forward / Port Forward

• Internal Volume: 4.5 Cubic Feet (Before Displacement)

• Tuning Frequency: 30Hz

• Construction Material: 3/4-inch MDF

External Dimensions

• Width: 37 inches

• Height: 16 inches

• Depth: 23 inches

Premium Structural Reinforcement

Double Front Baffle

A double-thickness front baffle increases rigidity and provides superior mounting strength for heavy, high-excursion subwoofers. This added reinforcement helps minimize unwanted vibration while maintaining a solid mounting surface under high power.

Extensive Window Bracing

Strategically positioned internal window bracing strengthens the enclosure by:

• Reducing panel flex

• Increasing cabinet rigidity

• Improving overall acoustic efficiency

• Maintaining structural integrity during extreme bass output

This reinforcement allows more amplifier power to be converted into bass instead of unwanted cabinet movement.

Performance Features

• Designed for dual 12-inch high-performance subwoofers

• 4.5 cubic feet of internal volume before displacement

• Precision tuned to 30Hz for deep, low-frequency performance

• Subs Forward / Port Forward configuration

• Double front baffle for added strength

• Extensive internal window bracing

• Excellent balance of sound quality and high-output performance

• Built for demanding daily-driver and competition-inspired systems

Whether you're building a powerful daily driver or chasing serious low-frequency output, this custom enclosure is engineered to help your subwoofers perform at their full potential. The combination of 4.5 cubic feet of internal air space before displacement, 30Hz tuning, premium bracing, and precision construction creates an enclosure capable of producing deep, clean, and hard-hitting bass that will bring your audio system to life.