Enter the radius of the subwoofer into the calculator to determine the total subwoofer cone area.

Subwoofer Cone Area Formula

The following formula is used to calculate the cone area of a subwoofer.

SCA = pi * r^2
  • Where SCA is the subwoofer cone area
  • r is the radius of the subwoofer

To calculate the subwoofer cone area, multiply the term pi by the radius squared. The units of the area will be the square units of whatever is used for the radius.

What is a subwoofer cone area?


A subwoofer cone area is defined as the total cross-sectional area that the end of a subwoofer cone occupies.

How to calculate the subwoofer cone area?

Example Problem:

The following example outlines how to calculate a subwoofer cone area.

First, measure the diameter of the subwoofer. In this example, the diameter is measured to be 5 inches.

Next, divide the diameter by 2 to get the radius. This gives us a radius of 2.5 inches.

Finally, use the formula above to calculate the subwoofer cone area.

SCA = pi * r^2

SCA = 3.14159 * 2.5^2

SCA = 19.63 in^2