Universal box template

Single 12-inch Rectangular Vented / Bass-Reflex Subwoofer Box

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Description

This 35 L vented (bass-reflex) enclosure is designed for a single 12-inch rectangular subwoofer, featuring a 35 Hz tuning. Built with 16 mm (5/8 inch) material in a simple rectangle shape, the cabinet's external dimensions are 586 × 388 × 349 mm (23.06 × 15.28 × 13.75 in). The design includes one internal brace to reinforce the panels and reduce vibration, making it ideal for high-output subwoofer systems. It serves as a general-purpose home subwoofer enclosure that balances bass extension, size, and low distortion for stereo systems, while also being optimized for everyday car-audio use where trunk space and installation constraints are key. The enclosure uses one L-shaped slot port with a port area suitable for high-output, large-excursion drivers and SPL-oriented applications with high airflow demand.

Volume & tuning

35 l
Internal volume
35 Hz
Tuning frequency

Box properties

Shape
Simple Rectangle
Material thickness (mm)
16
Material thickness (inch)
5/8
Box dimensions (mm)
587 × 388 × 349
Box dimensions (inch)
23.06 × 15.28 × 13.75
Max RMS speaker power up to
1300 W
Speaker mounting panel layers
Single
Number of bands
1

Enclosure & speaker

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

Port

Port type
Rectangular
Port count
1
Port area (sq.mm)
18241
Appearances
View all
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