Single 15-inch Rectangular Bass-Reflex Subwoofer Box for In-Vehicle - 85 L / 32 Hz - 670 × 477 × 373 mm

This vented (bass-reflex) enclosure is specifically designed for a single 15-inch rectangular subwoofer, utilizing an 85 L chamber tuned to 32 Hz. Constructed from 18 mm (3/4 inch) material, the simple rectangular cabinet features a double-thickness front baffle that increases rigidity and reduces flex, making it ideal for high-output systems. The design incorporates one L-shaped slot port with an area suitable for drivers with moderate cone excursion and airflow demand. Measuring 670 × 477 × 373 mm (26.85 × 18.81 × 14.7 in) in external dimensions (width × height × depth), this enclosure is optimized for everyday car-audio use by balancing installation constraints and trunk space with balanced sound. It also serves as a general-purpose home subwoofer enclosure for music and stereo systems, offering a perfect balance of bass extension, cabinet size, output, and low distortion.