Universal box template

In-Vehicle 8-inch Round Single Vented Subwoofer Box - 25 L / 35 Hz - 552 × 284 × 255 mm

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Description

This vented (bass-reflex) enclosure is designed for a single 8-inch round subwoofer, featuring a 25 L chamber tuned to 35 Hz with a single L-shaped slot port. The cabinet is built from 16 mm (5/8 inch) material in a simple rectangle shape with external dimensions of 552 × 284 × 255 mm (21.7 × 11.19 × 10.07 in). One internal brace reinforces the cabinet and reduces panel vibration, making it suitable for high-output subwoofer systems. The port area is optimized for high-output drivers with increased cone excursion and airflow demand. This design serves as a general-purpose home subwoofer enclosure for music and stereo systems, balancing bass extension, cabinet size, output, and low distortion, while also being ideal for everyday car-audio use where trunk space and installation constraints require balanced sound.

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)
553 × 284 × 256
Box dimensions (inch)
21.7 × 11.19 × 10.07
Max RMS speaker power up to
4900 W
Speaker mounting panel layers
Single
Number of bands
1

Enclosure & speaker

Enclosure
Vented
Speaker configuration
Single
Number of speakers
1
Speaker size
8"

Port

Port type
Rectangular
Port count
1
Port area (sq.mm)
5189
Appearances
View all
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