Universal box template
12-inch Rectangular Bass-Reflex Car Subwoofer Box - 40 L / 35 Hz - 588 × 378 × 293 mm
16
Car sub
Right-side port
Description
This Vented / Bass-Reflex enclosure is specifically designed for a single 12-inch rectangular subwoofer, featuring a 40 L chamber tuned to 35 Hz. Built from 16 mm (5/8 inch) material in a simple rectangle shape, the cabinet measures 588 × 378 × 293 mm (23.1 × 14.92 × 11.57 in). The design includes one L-shaped slot port positioned on the right side to ensure consistent installation and visual alignment. Its port area is optimized for high-output drivers with increased cone excursion and airflow demand. Engineered for everyday car-audio use, this box balances high-quality sound with trunk space efficiency and installation constraints.
Volume & tuning
40 l
Internal volume
35 Hz
Tuning frequency
Box properties
Shape
Simple Rectangle
Material thickness (mm)
16
Material thickness (inch)
5/8
Box dimensions (mm)
588 × 379 × 294
Box dimensions (inch)
23.1 × 14.92 × 11.57
Max RMS speaker power up to
260 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)
11675
