JBL VTX Series, Manual

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VTX A 12 | Rigging Manual
11.6 USING A SINGLE VTX A12 SB
The Suspension Bar can also be used as the main suspension frame. When the VTX A12 SB is used as a frame, it is simpler, lighter, and
more cost effective than using a VTX A12 AF. The disadvantage of this configuration, however—and the main reason that this configu-
ration is not recommended for regular use—is that the center of gravity (CoG) of the given array must perfectly line up with the shackle
attachment position on the Suspension Bar. If the CoG is in front of or behind the Suspension Bar, the aiming of the array will be incor-
rect. LAC-3 is used to determine if a given array qualifies for this configuration.
This configuration also supports side-by-side attachment for suspension hoists on the SB used as a top frame.