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en | Ground stacking
8.2.2
Subwoofer cardioid options
The X-Line Advance cardioid subwoofer configuration can be used to direct the output of an
array of subwoofers to limit excessive amounts of bass in undesired areas. These arrays can
be used to keep bass off of a stage, provide more consistent bass coverage in the audience,
and reduces bass in the surrounding area.
Multiple subwoofers must be arrayed to create a cardioid polar pattern.
Figure 8.5: Cardioid pattern top view
The rejection may be less in smaller indoor environments than in larger outdoor environments
due to room reflections. The subwoofers must be physically arrayed in one of the options
shown.
X12-125F subwoofers
Assemble the cardioid subwoofer array with three X12-125F subwoofers orientated vertically.
Direct the top and bottom subwoofers towards the audience and the middle subwoofer away
from the audience (Rejection direction). The X12-125F subwoofer cardioid array can be
ground stacked or suspended using the X12-125F-GRID. If desired, install the X12-125F-CGK
cardioid grille kit on the middle element to improve the aesthetics of the array.
Figure 8.6: X12-125F cardioid options
2019-07 | 04 | F.01U.310.953
Audience direction
Rejection direction
Installation manual
X-LINE ADVANCE System Rigging & Transport
Electro-Voice
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