Single 15-inch Vented / Bass-Reflex Subwoofer Box - 65 L / 35 Hz

This vented (bass-reflex) enclosure is designed for a single 15-inch round subwoofer, featuring a 65 L chamber tuned to 35 Hz. Built with a simple rectangle shape from 18 mm (3/4 inch) material, the cabinet's external dimensions are 663 × 466 × 419 mm (26.62 × 18.39 × 16.55 in). To handle high-output subwoofer systems and reduce panel vibration, the design incorporates a double-thickness front baffle and one internal brace. It utilizes one L-shaped slot port with a port area optimized for high-output, large-excursion drivers and SPL-oriented use demanding high airflow. This versatile enclosure serves as a general-purpose home subwoofer for music and stereo systems, balancing bass extension, size, output, and low distortion, while also being suitable for everyday car-audio use with balanced sound and trunk space constraints in mind.