Single 12-inch Rectangular Vented / Bass-Reflex Subwoofer Box (40 L / 35 Hz)

This Vented / Bass-Reflex enclosure is specifically designed for a single 12-inch rectangular subwoofer, featuring a 40 L chamber tuned to 35 Hz. Constructed from 24 mm (1 inch) material with external dimensions of 862 × 424 × 287 mm (35.39 × 16.75 × 11.35 in), the cabinet utilizes a simple rectangle shape. A double-thickness front baffle increases rigidity and reduces flex, making it ideal for high-output systems. It serves as a general-purpose home subwoofer enclosure for music and stereo systems, balancing bass extension, size, and low distortion, while also being suitable for daily car-audio use where trunk space and balanced sound are key. The design incorporates one L-shaped slot port with an area optimized for high-output, large-excursion drivers and SPL-oriented applications with high airflow demand.