Electro-Voice X-Line Very Compact (XLVC) manual ELECTRO-VOICEX-Line Very CompactTM Rigging Manual

3.6 XLD Grid, XLE Grid, CBEAM, and AGCD Complex Structural-Strength Ratings

XLD Grid and XLE Grid Complex Structural-Strength Ratings

The XLD Grid can be used to suspend a column of XLD281 or XS212 loudspeaker systems, while the XLE Grid can only be used to suspend a column of XLE181 loudspeaker systems.

The structural strength of a column of loudspeakers suspended from a grid is a function of the strength of 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 grid. 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 XLVC grids to be 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 (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.

When Using the Grid in Any of the Configurations Shown to Support a Column of Loudspeaker Systems, the Structural Rating of the Grid Will Always Exceed the Structural Rating of the Loudspeaker Systems for any Vertical Tilt Angle. 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 Using Two Pick-Up Points to Suspend a Grid, Do Not Exceed the Angles Shown

Figure 15a:

XLD GRID Complex Structural Ratings

Figure 15b:

XLE GRID Complex Structural Ratings

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