dB TECHNOLOGIES DVA S2585N v2 - Manual (Page 3)

A cardioid sub is a low-frequency spe-
aker with a heart-shaped directivity.
The power attenuation for this kind
of speaker is placed at the back (
180°).
Cardioid Subwoofer
A supercardioid sub is meant to
be a bidirectional low-frequency
speaker.
In this case, the power attenua-
tion is placed at ±
135°.
Supercardioid Subwoofer