SAD calculator

This spreadsheet is the Swiss Army knife for subwoofer configurations. It helps you design, in real-time, cardioid configurations like end-fired and gradient. Physical (arc) and delayed (straight) horizontal arrays.

You can use up to 12 speakers with omnidirectional, cardioid, super-cardioid and figure-eight speaker patterns. Apply low- and high-pass filters. Look at arrival times both absolute and relative.

It displays frequency and phase responses for 7 microphones. Shows you SPL and polar plots. Lastly, nearly everything can be normalized in order to see relative differences.

As of version 1.4 the results can be exported into Meyer Sound MAPP XT for increased accuracy.


  • real-time
  • configurations
    • horizontal arrays
      • physical (arc)
      • delayed (straight)
    • end-fire
    • gradient
  • speaker patterns
    • omni
    • cardioid
    • super-cardioid
    • figure-eight
  • frequency and phase responses of 7 microphones (48 points-per-octave)
  • plots
    • SPL (32 x 32 points)
      • absolute
      • normalization
        • source
        • destination
    • polar (up to 7 adjustable frequencies)
      • 1 degree resolution
      • opening angle analysis
  • filters (frequency response only)
    • low-pass
    • high-pass
    • Linkwitz-Riley topology
  • level tapering to control side lobing using 15 different window functions
  • export to Meyer Sound MAPP Online Pro

file type: Microsoft Excel Open XML spreadsheet (.xlsx)

minimum requirements:

  • Excel 2007 or higher
  • Excel 2008 or higher

download manual:

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