Single 15-inch Rectangular Vented / Bass-Reflex Subwoofer Box - 85 L / 32 Hz

This Vented / Bass-Reflex enclosure is designed for a single 15-inch rectangular subwoofer, balancing bass extension, cabinet size, output, and low distortion for home music and stereo systems. Built from 24 mm (1 inch) material with external dimensions of 735 × 500 × 450 mm (29.52 × 19.72 × 17.75 in), the simple rectangle cabinet features a double-thickness front baffle and one internal brace to increase rigidity and reduce vibration in high-output systems. The 85 L chamber is tuned to 32 Hz using one L-shaped slot port with a port area optimized for large-excursion drivers and high airflow SPL demands. It is also suitable for everyday car-audio use, accounting for limited trunk space, installation constraints, and balanced sound.