Nexo PS-R2 - Manual (Page 27)

C ONFIGURABLE A SYMETRICAL H ORN Page 27/82
6 C
ONFIGURABLE
A
SYMETRICAL
H
ORN
6.1 Principle
The Asymmetrical Dispersion Constant Directivity horn is an important feature of the PS Series. This
concept was previously only available for highly specialized applications; in the general purpose PS it is
fully exploited thanks to a practical design that makes user configuration of the horn practical and quick.
The proper configurations of the horn for two common applications are shown below. All 4 positions of
the horn are possible and can be useful for specialized applications such as complex arrays, systems
designed with CAD software and stage monitoring.
The specific dispersion of the PS8, PS10 & PS15 horn can be seen on figure 1 ("front of house"
configuration):
• As seen on the side view, vertical coverage is narrower above horn axis (+25°) than below (-30°).
• As seen on the front view, horizontal coverage is narrower above horn axis (50° Horizontal for
+25° Vertical) and wider below (100° Horizontal for -30° Vertical). Between these two extremes
horizontal coverage varies according to a specific law; on axis (0° Vertical) coverage is 75°
Horizontal.
6.2 Change of configuration
Access to the horn for configuration and checking is easily made by removing the front grille (4 TORX
screws to be removed top and bottom of the cabinets, see figure below). To modify horn orientation,
remove the four Allen 4 metric or TORX
TX25 screws that hold the horn in place. A sticker on the wide
dispersion side of the horn shows the correct orientation for wedge monitoring and front of house
applications: you simply position the indication on the desired side. The arrow indicates the wide
dispersion.