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, featuring an 85 L chamber tuned to 32 Hz. Built from 18 mm (3/4 inch) material, the simple rectangle cabinet has external dimensions of 676 × 496 × 446 mm (27.02 × 19.58 × 17.62 in). To accommodate high-output subwoofer systems and reduce panel vibration, the design includes a double-thickness front baffle and one internal brace. It utilizes one L-shaped slot port with a port area suitable for large-excursion drivers and high airflow SPL applications. This versatile box balances bass extension, output, and low distortion for general-purpose home stereo systems while remaining compact enough for everyday car-audio use where trunk space and installation constraints are key.