Subwoofer Speaker Calc

The Subwoofer Speaker Calculator has functions to compute metrics for a subwoofer as follows:

• Volume of a Subwoofer
• Enclosure Volume of Subwoofer from Air Compliance and Tuning Frequency
• Air Compliance of a Subwoofer
• Tuning Frequency of a Subwoofer
• Diagonal of a Box

The Math / Science

Several formals in the Subwoofer Speaker Calculator are based on the following formula for the Air Compliance of a Subwoofer.  Air compliance refers to the volume of air displaced by the maximum deformation of the speaker membranes. 

The formula for Air Compliance of a subwoofer is:

AC = `(F_b/F_s)^(1/0.31) * V`

where:

• AC = Air Compliance
• Fb = Box Enclosure Tuning Frequency
• Fs = Speaker Resonance Frequency
• V = Enclosure Volume or Box

This calculator has the above formula solved for:

• Volume of Enclosure (V) based on the frequencies and air compliance
• Box Enclosure Tuning Frequency
• Air Compliance

It also has two helpful geometric formulas, the volume of a box and the length of the diagonal in the box.  Both are useful in the construction of a subwoofer box speaker.

Music Calculators

• Music Duration
• Tempo
• Tempo Needed for Duration
• Tuning Frequency for Subwoofer
• Subwoofer Speaker Calc
• Subwoofer Box Volume
• Music Duration Calculator
• Random Chord Generator