AJ Sealed Designer Software is for designing sealed or closed theoretical enclosures.

Subwoofer Box Comparison Calculator:
Online version of all three calculators (Bandpass, Sealed and Vented)

Bandpass Designer is freeware. Download Here.
Sealed Designer is freeware. Download Here.
Vented Designer is freeware. Download Here.

Input Parameters

1. IMPORTANT:  MAKE SURE THE UNITS MATCH (e.g. Vas is in liters not cubic feet).
2. Qtc: choose a value between 0.1 and 1.5.  A value between 0.5 and 1.2 should give good results.
3. Pmax, Diameter, and Xmax are not required for box calculation.  They are used to determine the power response curve.  Vb, Fb, and F3 will still be valid.

Calculated Parameters

The following speaker/box parameters are calculated: Vb:  Volume of box (one to be built) in liters Fb:  Box resonance in Hz F3:  Half power frequency in Hz

1. F3 is the most meaningful parameter.  The lower the F3 the lower the bass.  A F3 below 50 Hz should be suitable for a sealed enclosure.
2. Vb is the size (volume) of the box that needs to be built.  Generally, the lower the bass the bigger the box. 
3. For Box Calculator instructions go here.

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