Subwoofer Box Calculator

Step-by-Step Guide to Using the Subwoofer Box Calculator

Introduction

The Subwoofer Box Calculator assists you in designing the optimal box for your subwoofer based on specific audio parameters. The calculator will determine the optimal box volume, the lower cutoff frequency (F3), and recommended box dimensions, among other crucial measurements. Follow the steps below to input the necessary data and obtain your calculated results.

Step 1: Enter Subwoofer Driver Information

• Driver Diameter (inches):

  Enter the diameter of the subwoofer driver in inches. The diameter should be between 4 and 24 inches. Decimals of 0.1 are accepted for more precise input.

• Mounting Depth (inches):

  Input the mounting depth of the subwoofer driver. The allowed range is from 0 to 24 inches, and decimals can be used for accuracy.

Step 2: Enter Acoustic Parameters

• Driver Qts:

  Input the Qts value of your driver, which is a parameter related to the driver’s efficiency and damping. The value should range between 0.1 and 10, with a step precision of 0.01.

• Vas (cubic feet):

  Enter the Vas parameter value in cubic feet. This value should be in the range of 0.1 to 100 and can be entered with a precision of 0.01.

• Fs (Hz):

  Enter the subwoofer’s resonant frequency in hertz, which can range from 1 to 200 Hz and can be entered with 0.1 precision.

Step 3: Select Enclosure Type

• Enclosure Type:

  Select the type of enclosure you want from the options: Sealed or Ported. This selection will influence the calculated results for F3, port length, and port diameter.

Step 4: Obtain Calculated Results

After entering all necessary inputs, the calculator will provide the following results:

• Optimal Box Volume: The calculated volume of the box in cubic feet, optimized based on the Vas and Qts parameters.
• F3 (Lower Cutoff Frequency): The lower cutoff frequency for the box, given in hertz, and will vary based on the selected enclosure type.
• Port Length (Ported Box): If a ported enclosure is chosen, the calculator provides the port length necessary, measured in inches.
• Port Diameter (Ported Box): The diameter of the port in a ported box, provided in inches if such an enclosure is selected.
• Recommended Box Width: Based on the driver diameter, this suggests the width of the box in inches.
• Recommended Box Height: Recommends the box height in inches based on the driver diameter.
• Recommended Box Depth: Takes the mounting depth and adds a standard allowance, providing the box depth in inches.

Conclusion

By following these steps, you can effectively use the Subwoofer Box Calculator to design a box that suits your subwoofer’s unique specifications for optimal sound performance. Be sure to input accurate values for precise results!