Vertical polar pattern of MX392 mic

FAQ #305 Updated July 17, 2007

Question:

Your manual includes the typical polar patterns for the MX392 series mics. However, I assume that these are patterns in the horizontal plane. What about the vertical plane? Since the mic is on a boundary, we only have 180 degrees to work with. Where would 0 degrees be? On the table boundary, or at the approx 60 degree angle the mic is facing?
I'm asking this question because the installation I am doing has speakers above the mic location, so I am looking for the optimum angle for mic placement to avoid feedback.

Answer:

Zero degrees is the table boundary, directly in front of the word "PUSH". If the MX392 is suspended in mid-air, the pattern looks like a standard mic, ignoring the minor effect of the MX392 bottom plate which is a small boundary itself. Placing the MX392 on a table surface essentially divides the polar pattern in half. The larger the table, the greater the boundary effect is at lower frequencies. Note that a 100 Hz acoustical signal is 11 feet long!

If you use the MX392 supercardioid pattern, the optimal loudspeaker placement would be 120 degrees away from 0 degrees.

Find an Answer

Related Products

MX392 & MX393

Contact Information

Telephone: (800) 516-2525

Fax: (847) 600-8686

Additional Support

Ask a Question