Universal box template

Single 15-inch Rectangular Vented / Bass-Reflex Subwoofer Box - 65 L / 35 Hz

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Description

This vented (bass-reflex) enclosure is designed for a single 15-inch rectangular subwoofer and features a 65 L chamber tuned to 35 Hz. Built from 18 mm (3/4 inch) material, the simple rectangle cabinet has external dimensions of 663 × 466 × 419 mm (26.62 × 18.39 × 16.55 in). The double-thickness front baffle and one internal brace increase cabinet rigidity while reducing panel vibration, making it suitable for high-output systems. It utilizes one L-shaped slot port with an area optimized for high-output, large-excursion drivers and SPL-oriented use requiring high airflow. This versatile design balances bass extension and low distortion for home music systems, while also considering trunk space and installation constraints for everyday car-audio use.

Volume & tuning

65 l
Internal volume
35 Hz
Tuning frequency

Box properties

Shape
Simple Rectangle
Material thickness (mm)
18
Material thickness (inch)
3/4
Box dimensions (mm)
663 × 466 × 420
Box dimensions (inch)
26.62 × 18.39 × 16.55
Max RMS speaker power up to
2400 W
Speaker mounting panel layers
Double
Number of bands
1

Enclosure & speaker

Enclosure
Vented
Speaker configuration
Single
Number of speakers
1
Speaker size
15" Rectangle

Port

Port type
Rectangular
Port count
1
Port area (sq.mm)
28502
Appearances
View all
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