Single 15-inch Round Ported In-Vehicle Subwoofer Box - 85 L / 32 Hz - 656 × 495 × 445 mm

This Vented / Bass-Reflex enclosure is designed for a single 15-inch round subwoofer, providing an 85 L chamber tuned to 32 Hz. Constructed from 16 mm (5/8 inch) material in a simple rectangle shape, the cabinet features external dimensions of 656 × 495 × 445 mm (25.82 × 19.51 × 17.56 in). To handle high-output systems, the design includes a double-thickness front baffle and one internal brace to increase rigidity and reduce vibration. The single L-shaped slot port provides a port area suitable for high-output, large-excursion drivers and SPL-oriented use with high airflow demand. This versatile box is optimized for everyday car-audio use within limited trunk space and also serves as a general-purpose home subwoofer enclosure that balances bass extension, size, output, and low distortion.