Variable Intensity 1-Box Sound Reinforcement System

EVI provides a simple, economical solution for permanent installations requiring even coverage over a fixed rectangular area. In a typical room, the distance from a front-mounted loudspeaker to the last row is two or more times the distance to the front row, resulting in a substantial front-to-back difference in level and intelligibility. The Variable Intensity horn counters this problem by increasing the sound sent to the back of the room by six to eight dB, balancing SPL distribution without the expense and complexity of additional systems or components.


12" Variable Intensity Loudspeaker

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15" Variable Intensity Loudspeaker

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Dual 8" 2-Way Variable Intensity Loudspeaker

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News Stories


Name Language Size Date
Speaker & Electronics Catalog EN 18.91MB Jun 10, 2015
Name Size Date
Environmental Compliance Document 148KB Oct 3, 2017
Name Type Size Date
EVI Series EASE Data ZIP 105KB Dec 26, 2007
Name Language Size Date
EVI-12 Engineering Data Sheet EN 362KB Mar 21, 2012
EVI-15 Engineering Data Sheet EN 463KB Dec 26, 2007
EVI-28 Engineering Data Sheet EN 518KB Dec 26, 2007
EVI-28MB Engineering Data Sheet EN 145KB Mar 21, 2012
Name Language Size Date
EVI-12, EVI-15, EVI-28 Applications Guide EN 639KB Dec 26, 2007
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Service Policies for the Americas EN 232KB Apr 25, 2013
Name Language Size Date
Audio 101 - Basic Audio Terminology EN 2.74MB Dec 13, 2012
Audio 101 - Loudspeaker Basics EN 3.02MB Dec 13, 2012
EASE Data Explanation EN 934KB Nov 17, 2015
PA Bible 02: Power Handling Capacity EN 422KB Dec 26, 2007
The EV PA Bible EN 1.14MB Dec 26, 2007

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