App description

Calculation of the minimum port vent diameter at the exit of the subwoofer

Calculation of minimum port vent diameter, maximum air volume, tuning frequency

Select the appropriate unit and enter a value and click on "Calculate". The result will be displayed.

Calculation formula

D = Minimum Port Vent Diameter

V = Maximum Air Volume

F = Tuning Frequency

N = Number of Ports

\(D=\frac {2030×（\frac {V^2}{F}）^{\frac{1}{4}}}{√N}\)

Usage example

Known data: maximum air volume; tuning frequency; number of ports, what is the minimum port vent diameter?

Input data: maximum air volume: 10 cubic meters; tuning frequency: 5 Hz; number of ports: 5

Output: minimum port vent diameter: 1919.9 cm

Note

The unit of maximum air volume, tuning frequency and minimum port vent diameter can be selected. Click on the check head to select the corresponding unit.