Cardioid Modes - Void Stasys 218 User Manual

6 Operating modes

6.3 Cardioid modes

As low frequency enclosures are omnidirectional, rear projection can cause a range of
difficulties. If there is a wall behind the array, the sound wave can reflect off the surface and
may cause cancellation in front if it arrives out of phase with the wave from the source.
Another problem may occur during performances where an array is deployed in front of
the stage, possibly creating a maximum sound pressure level that makes it difficult for some
performers. Adopting a cardioid configuration can overcome this problem as it creates a heart
shaped horizontal dissipation reducing the rear projection. A variety of cardioid configurations
are available, as shown below. For other layouts or more information, please contact your
local Void distributor/dealer.
Figure 6.2: Cardioid mode layouts
Stasys 218 User Guide V1.0 Page 14