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CommonSense Audio 5.6

Click on links for full set of plots.

Horizontal directivity plots

CommonSense Audio 5.6 H Contour Plot

Full horizontal contour plot

Directivity index plots

CommonSense Audio 5.6 Horizontal DI Plot

Horizontal plane directivity index plot

Constant directivity metrics plots

CommonSense Audio 5.6 Horizontal Polar XCorr Plot

Full horizontal NACC plot

Measurement notes:

  1. Date performed: 30 March 2015
  2. Nominal measurement distance: 1.7 meters
  3. Transducer type: full-range dynamic (15-inch Audio Nirvana driver)
  4. Exponential sine sweep settings:
    • Frequency range: 20 Hz to 48 kHz
    • Duration: 5 seconds
  5. Impulse response window settings:
    • Type: Tukey (cosine fade-in, flat, cosine fade-out)
    • Duration: (0.5, 2, 0.5) msec
  6. Frequency resolution: 333.33 Hz
  7. Spectral smoothing: 1/24th octave
  8. Directivity index averaging range: 500 Hz to 20 kHz
  9. Alignment: axis of rotation in the plane of the loudspeaker cabinet's face; microphone aligned with center of driver.
  10. Additional notes: None.
  11. Acknowledgment: Thanks to Bob Walters for lending us these loudspeakers.