User Manual

2
n
Three advantages of line-array speakers
The line-array speaker offers the following three advantages over standard point-source speakers.
1
Sound reinforcement with more consistent sound pressure
With this type of speaker, sound pressure is affected less by distance, allowing for clearer, more consistent sound
reinforcement. As a result, ample sound pressure can be delivered to back-of-house without making front-of-stage
excessively loud.
Standard speaker (point source)
More attenuation over distance—i.e., sound pressure attenuates by 6 dB for each doubling.
Sound pressure is thus affected to a greater degree by distance, resulting in excessive in-front-of-stage volume.
Line-array speaker (line source)
Less attenuation over distance—i.e., sound pressure attenuates by 3 dB for each doubling.
Sound pressure is not affected as much by distance, so in-front-of-stage volume does not need to be excessive.
1m 2m 4m 8m 16m
Attenuation
over distance
Sound-pressure
level
104dB 98dB 86dB 80dB92dB
-12dB-6dB -18dB -24dB
1m 2m 4m 8m 16m
Attenuation
over distance
Sound-pressure
level
92dB 89dB 83dB 80dB86dB
-6dB-3dB -9dB -12dB