Princeton University  

Return to Main Page

JBL Professional PRX635

Click on links for full set of plots.

Horizontal directivity plots

JBL Professional PRX635 H Contour Plot

Full horizontal contour plot

Directivity index plots

JBL Professional PRX635 Horizontal DI Plot

Horizontal plane directivity index plot

Constant directivity metrics plots

JBL Professional PRX635 Horizontal Polar XCorr Plot

Full horizontal NACC plot

Measurement notes:

  1. Date performed: 31 March 2015
  2. Nominal measurement distance: 1.7 meters
  3. Transducer type: three-way dynamic
  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, 3, 0.5) msec
  6. Frequency resolution: 250 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 tweeter and the axis of rotation passed through the center of the cabinet.
  10. Additional notes: None.