User Manual

9
As we have seen, the line array speaker delivers less sound energy directly into a microphone located nearby because of
the way in which the individual speaker units are partially coupled together, and also—thanks to reduced attenuation of
volume over distance—because the total sound pressure immediately surrounding the array is lower.
Therefore, if a microphone is placed in front of a line-array speaker and a point-source speaker both producing the same
sound-pressure level at a specic listening point, the likelihood of feedback will be less with the line array speaker,
allowing for more reliable and predictable sound reinforcement than with a point-source speaker.
Sound reinforcement to the
same sound-pressure level
at a specic distance.
Point-source speaker
(point source)
Line-array speaker
(line source)
Sound-pressure level
Distance from the speaker
Attenuation over distance: -6 dB/DD
Attenuation over distance: -3 dB/DD
Sound-pressure level is lower
near the line-array speaker.