Passive Disco Systems
Sept 2016
19
Amate Audio
Fig.15.
X218D connection panel
Fig.16.
X21D connection panel
7. CARDIOID SUBWOOFERS
X18D, X21D and X218D enable the combination of
three or multiple of three subwoofer cabinets to
provide exceptional directivity at low frequencies. To
get the correct set-up parameters, please contact
.
High directivity at low
frequencies has two main effects on the sound field:
firstly, the low frequency level behind the subwoofer
cabinets is greatly reduced; secondly, in closed
venues the diffuse sound field at low frequencies is
reduced so the low frequency reproduction is much
more precise.
Fig.17.
Traditional polar pattern of a subwoofer at 40Hz
A
A
