Electro-Voice X-Line Very Compact (XLVC) manual Cbeam Complex Structural-Strength Ratings

Specifically, this means that, when the XLD Grid is used in any of the configurations shown in Figure 15a, the structural rating of the grid will always exceed the structural ratings of either the XLD281 or XS212 loudspeaker systems. Thus, if the structural rating is not exceeded for any loudspeaker in the column, the structural rating of the grid will not be exceeded.

Likewise, when the XLE Grid is used in any of the configurations shown in Figure 15b, the structural rating of the grid will always exceed the structural ratings the XLE181 loudspeaker systems. Thus, if the structural rating is not exceeded for any loudspeaker in the column, the structural rating of the grid will not be exceeded.

When two side-to-side pickup points, or two front-to-back pickup points are used to suspend an XLD Grid or XLE Grid, the maximum included angle between the pickup points shown in Figures 15a and 15b must not be exceeded.

CBEAM Complex Structural-Strength Ratings

The CBEAM can be used as a coupler beam to suspend a column of XS212 loudspeaker systems behind a column of either XLD281 or XLE181 loudspeaker systems. It can also be used as an extender beam with a single column of either XLD281 or XLE181 loudspeaker systems to enable greater vertical angle tilt of the column than that which could be achieved with a grid alone.

The structural strength of the of a column of loudspeakers suspended from a CBEAM is a function of the strength of the beam frame assembly, the beam yoke assemblies, the beam ring assemblies, the grid spreader bar assemblies, the grid sidearm assemblies, the front and back rigging attachment to the XLVC enclosures, the strength of all of the quick-release attachment pins, the loudspeaker array configuration and the vertical tilt angle of the beam. This is a complex mechanical system, where the strength of the overall system is determined by the strength of the weakest component in the system.

The Electro-Voice engineers have designed the CBEAM to be stronger than the XLD Grids and XLE Grids, which are in turn stronger than the XLVC loudspeaker systems over the entire mechanical operating range of the loudspeaker systems. This makes the structural analysis of the overall system (beam, grids and loudspeaker enclosures) much easier because the structural rating of the entire mechanical system will be determined solely by the structural strength of the loudspeaker systems.

Specifically, this means that, when the CBEAM is used in any of the configurations shown in Figure 15c, the structural rating of the beam will always exceed the structural ratings of either the XLD281 or XS212 loudspeaker systems. Thus, if the structural rating is not exceeded for any loudspeaker in the column, the structural rating of the beam will not be exceeded.

When suspending a CBEAM, the maximum included angle of the pickup points relative to the beam shown in Figure 15c must not be exceeded. Note that the maximum angle for the pickup rings is less for holes 1 and 30 because the pickup rings will contact the spacer bars at greater angles.

ELECTRO-VOICE®X-Line Very CompactTM Rigging Manual 46