15-inch Single Round Ported Car Audio Subwoofer Box - 85L / 32Hz - 676 × 496 × 446 mm

This Vented / Bass-Reflex enclosure is designed for a single 15-inch round subwoofer, featuring an 85 L chamber tuned to 32 Hz. Constructed from 18 mm (3/4 inch) material in a simple rectangle shape, the cabinet measures 676 × 496 × 446 mm (27.02 × 19.58 × 17.62 in). To ensure suitability for high-output systems, it includes a double-thickness front baffle and one internal brace to increase rigidity and reduce panel vibration. The design utilizes one L-shaped slot port with a port area optimized for high-output, large-excursion drivers and SPL-oriented use requiring high airflow. Whether used in a car-audio setup where trunk space and installation constraints are key, or as a general-purpose home subwoofer for music and stereo systems, this box balances bass extension, size, output, and low distortion.