Universal box template
Single 8-inch Vented / Bass-Reflex Subwoofer Enclosure - 20 L / 38 Hz
PRO
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Description
This rectangular Vented / Bass-Reflex enclosure is designed for a single 8-inch subwoofer, balancing bass extension, size, and low distortion for both home stereo systems and daily car audio use. The 20 L chamber is tuned to 38 Hz and features one L-shaped slot port with an area optimized for high-output, large-excursion drivers and high airflow SPL demands. Built from 16 mm (5/8 inch) material, the cabinet measures 583 × 285 × 256 mm (22.92 × 11.23 × 10.11 in). It features a double-thickness front baffle and one internal brace to increase rigidity and minimize vibration, while remaining compact enough for limited trunk spaces and constrained installations.
Volume & tuning
20 l
Internal volume
38 Hz
Tuning frequency
Box properties
Shape
Simple Rectangle
Material thickness (mm)
16
Material thickness (inch)
5/8
Box dimensions (mm)
584 × 285 × 257
Box dimensions (inch)
22.92 × 11.23 × 10.11
Max RMS speaker power up to
14900 W
Speaker mounting panel layers
Double
Number of bands
1
Enclosure & speaker
Enclosure
Vented
Speaker configuration
Single
Number of speakers
1
Speaker size
8" Rectangle
Port
Port type
Rectangular
Port count
1
Port area (sq.mm)
8107
