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Sanders Sound Systems Model 11 with Anechoic Foam

Click on links for full set of plots.


Horizontal directivity plots

 Sanders Sound Systems Model 11 with Anechoic Foam H Contour Plot

Full horizontal contour plot

Directivity index plots

 Sanders Sound Systems Model 11 with Anechoic Foam Horizontal DI Plot

Horizontal plane directivity index plot

Constant directivity metrics plots

 Sanders Sound Systems Model 11 with Anechoic Foam Horizontal Polar XCorr Plot

Full horizontal NACC plot

Measurement notes:

  1. Date performed: 26 June 2013
  2. Nominal measurement distance: 1.6 meters
  3. Transducer type: electrostatic; transmission-line dynamic
  4. Exponential sine sweep settings:
    • Frequency range: 1 Hz to 22 kHz
    • Duration: 5 seconds
  5. Impulse response window settings:
    • Type: Tukey (cosine fade-in, flat, cosine fade-out)
    • Duration: (0.5, 1, 0.5) msec
  6. Frequency resolution: 500 Hz
  7. Spectral smoothing: 1/24th octave
  8. Directivity index averaging range: 500 Hz to 20 kHz
  9. Alignment: The microphone was aligned with the center of the electrostatic panel and the axis of rotation passed through the center of the panel enclosure.
  10. Additional notes: The acoustic foam used in these measurements was glued to a custom back-wave absorber (BWA) made by Sanders Sound Systems. See these measurements for more details on the BWA.