Universal box template

Single 8-inch Rectangular Ported Car Audio Subwoofer Box - 25 L / 35 Hz - 567 × 322 × 250 mm

Description

This Vented / Bass-Reflex enclosure is designed for a single 8-inch rectangular subwoofer, utilizing a 25 L chamber tuned to 35 Hz. Built from 16 mm (5/8 inch) material in a simple rectangle shape, the cabinet measures 567 × 322 × 250 mm (22.28 × 12.69 × 9.88 in). The design features one L-shaped slot port with a port area suitable for high-output, large-excursion drivers and SPL-oriented use requiring high airflow. It serves as a general-purpose home subwoofer enclosure that balances bass extension, size, and low distortion, while also being optimized for daily car-audio use where trunk space and installation constraints are key.

Volume & tuning

25 l
Internal volume
35 Hz
Tuning frequency

Box properties

Shape
Simple Rectangle
Material thickness (mm)
16
Material thickness (inch)
5/8
Box dimensions (mm)
568 × 322 × 251
Box dimensions (inch)
22.28 × 12.69 × 9.88
Max RMS speaker power up to
850 W
Speaker mounting panel layers
Single
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
Appearances
View all
Similar boxes for 8" speakers