AJ Audio Subwoofer Design Software

Subwoofer Main
Free Downloads (Windows):
Bandpass Designer Sealed Designer Vented Designer
Bandpass Sealed Vented Example
Box Calculator (Windows):
Bandpass Sealed Vented

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

Providing subwoofer design software programs for solving the required calculations for custom bandpass, sealed and vented box cabinet designs. Can be used for car, truck, sport utility vehicle (SUV), Jeep automotive, guitar and home theater applications and projects. This site provides the instructions and "how to" information to successfully plan, design, construct, build and setup subwoofer enclosure systems using AJ Bandpass Designer, Sealed Designer and Vented Designer. Works with any type and size of driver (8, 10, 12, 15 inch). The Subwoofer Designer Series is intended for the hobbyist, audio / acoustic enthusiast and Do It Yourself (DIY) speaker builder.

Bandpass Designer, Sealed Designer and Vented Designer provide accurate theoretical solutions for subwoofer driver characteristics and attributes (Thiele Small) and box/enclosure parameters with an easy to use interface. There exists other calculations, not included in the software, because they are not required and provide little technical information.

As with any design or engineering of speaker enclosures, the performance, sound output, bass, and sub frequencies are not guaranteed. Bandpass, Sealed and Vented Designer calculate speaker parameters based on loudspeaker theory and engineering equations/principles/formulas. The calculations are used to predict loudspeaker parameters. This was noted, because not every loud speaker design will give the expected results.

Bandpass Designer

Provides an easy to use interface to solve bandpass box parameters:
  • Volumes of the front and rear chambers of the box.
  • Box Calculator to compute the dimensions of a box/rectangular shaped enclosure.
  • Resonance frequency of the box.
  • Half and low roll off frequencies(-3 dB points) for both the high and low pass filter.
  • Port length for a given diameter
  • Frequency - decibel response plot
  • Power response - decibel plot

Sealed Designer

Provides an easy to use interface to solve sealed box parameters:
  • Volume of the box/enclosure.
  • Golden ratio of length, width and depth using the Box Calculator function.
  • Resonance frequency of the box.
  • Half power frequency(-3 dB point).
  • Frequency - decibel response plot.
  • Power - decibel response plot.

Vented Designer

Provides an easy to use interface to solve vented or ported box parameters:
  • Installation volume of the box.
  • Golden ratio of length, width, and depth using the Box Calculator function.
  • Resonance frequency of the box.
  • Half power frequency.
  • Length of vent(s)/port(s) for a given diameter / radius
  • Frequency decibel response graph.
  • Powered decibel response graph.

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By Jimmy Raymond
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Contact: aj@ajdesigner.com

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