A P P L I C A T I O N S
LOUDSPEAKER BASICS
When to use Delay Speakers
The use of more than one EVOi.324 may be necessary in venues with extremely long listening areas.
For example if the listening area is 120’ in depth and the required performance is for “Loud Playback Music” the Maximum Performance Guideline on page 10 indicates a maximum 20’ installation height. This will provide 60’ of throw. To cover the remaining 60’ of listening area, a second auxiliary/delay speaker is required (see Figure 15).
Note that the sound from the delay speaker must be “in sync” with the sound from the main speaker. This is achieved by appropriately delaying the audio signal arriving at the delay speaker and also by reducing its overall output level. While these adjustments typically require the use of complex measurement equipment, expensive delay devices and years of audio experience, they can be made automatically through the use of the optional EVOi.net controller.
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| 40' |
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| 26.6° | 26.6° |
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| 20' | 20' |
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| B | A |
140' | 120' | 100' | 80' | 60' | 40' | 20' |
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| Throw (Optimized Coverage Distance) A | |
Throw (Optimized Coverage Distance) B
Figure 15: Basic Delay Speaker Placement
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EVOi.324