Universal box template
Single 12-inch Vented / Bass-Reflex Subwoofer Box - 40 L / 35 Hz
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Description
This vented (bass-reflex) enclosure is designed for a single 12-inch round subwoofer, featuring a 40 L chamber tuned to 35 Hz with one L-shaped slot port. The cabinet is constructed in a simple rectangle shape using 16 mm (5/8 inch) material, with external dimensions of 615 × 391 × 352 mm (24.2 × 15.41 × 13.87 in). A double-thickness front baffle and one internal brace enhance rigidity and minimize panel vibration, making it suitable for high-output systems. The port area is optimized for high-airflow demand and large-excursion drivers in SPL-oriented applications. Designed for everyday car-audio use, it accounts for limited trunk space and installation constraints while serving as a general-purpose home subwoofer enclosure that balances bass extension, size, and low distortion for stereo systems.