dB TECHNOLOGIES DVA S2585N v2 - Manual (Page 5)

Cardioid Case
The cardioid configuration is sugge-
sted to be used for situations where
the subs are placed in front of the
stage in central configuration.
In this case, the phase cancellation
under the stage brings the SPL in this
area down to -
22dbspl compared
with the front of the stage.
Measured cardioid
directivity of DVA S 2585N
from 40Hz up to 100Hz