Meyer Sound galileo 616 operating instructions High-Frequency Equalization Strategies

APPENDIX C: USER-DEFINED EQUALIZATION CURVES WITH M SERIES ARRAY AND ATMOSPHERIC CORRECTION

In a typical system design, small vertical splay angles in the upper part of the array boost long-distance coverage, while larger angles in the lower elements increase vertical coverage for shorter distances. Those angles, along with the number of cabinets and the distance from the array to the listening area, determine the overall response of the array. Galileo M Series Array Correction and Atmospheric Correction create custom EQs that compensate for the overall response of the array to help achieve a flat frequency response based on the type and size of the array and the natural environment conditions.

NOTE: MAPP Online Pro is the tool of choice for accurate and comprehensive predictions for optimal coverage(s) during the design phase. Visit http://www.meyersound.com/mapponline for further information.

You can use the Galileo to drive an array with multiple vertical zones — usually two or three zones, depending on the design and number of elements. For designs where a flat response is not desired (for example, user-defined equalization curves) use M Series Array Correction and Atmospheric Correction parameters to effectively create the desired equalization curve. The key is to apply different strategies for low and high frequencies in both the long and short throw.

High-Frequency Equalization Strategies

For the far field, air absorption plays a critical role: the longer the distance, the greater the attenuation of high frequencies. In this zone, high frequencies generally need correction to compensate for energy lost over distance, and the gain needed is usually proportional to the distance and high-frequency air absorption.

NOTE: In the near to mid-field, air absorption is not nearly as critical. Therefore, high frequencies need less correction in this zone.

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