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48
en | Flying the system
Warning!
When using two pick points to hang the array with either the X12TE-GRID, X12-125F-GRID or
an individual spreader bar, the maximum allowable angle to the rigging points is 60°.
By exceeding the maximum allowable angle, the rigging system may fail, resulting in extensive
property damage, severe injury or death.
!
Using X12PU-BGK or X12-125FPU-BGK pull up grid for compression rigging method
For rear-rigging compression, the user must build a pull-up assembly. The bottom grid kit
includes two spreader bars and two pull-up link bars. One spreader bar attaches to the rear of
the bottom grid. The other spreader bar and the two pull-up link bars attach to the bottom of
the top grid at the rear-most attachment position. The remaining components of the pull-up
assembly must be provided by the user.
Use a lever hoist as the actual pull-up device to compress the array. The user extends the
chain from the hoist and attaches it to the pull-up spreader bar on the top grid using a 5/8-
inch shackle. Under the hoist, a load cell is attached to measure the compression force on the
array. One end of a 2-foot-long (or 0.6-meter-long) wire rope sling attaches to the bottom hook
of the load cell. The other end of the wire rope sling attaches to the spreader bar on the
bottom grid using a 5/8-inch shackle. Using longer or shorter wire ropes than the
recommended length may cause small errors between the predicted angle in the software and
the actual array angle.
The user provides the 5/8-inch shackles, wire rope sling, lever hoist, and load cell. Electro-
Voice recommends using a wire rope sling with a load rating of at least 2400 pounds (or 1100
kg) in vertical lifting configuration. Electro-Voice recommends using a Columbus-McKinnon
model 653 lever hoist having a 1.5-ton rating and 20 feet of chain. Electro-Voice line-array
configuration software assumes that this lever hoist is used when the pull-up option is
selected. If a different pull-up hoist is used, the angle at which an array hangs may be different
from what the line array configuration software predicts. The use of a load cell is required to
prevent excessive force on the array. The load cell should be from a brand commonly used in
the entertainment industry, such as (but not limited to) Motion Labs, Dillon, Straightpoint,
Ron Stagemaster, or BroadWeigh.
Caution!
Proper spreader bar orientation must be maintained when used in conjunction with the pull-
up grid. Always orient bars to the system model when viewed right-side-up, and then simply
!
rotate the top pull-up spreader bar upside-down before attaching to the pull-up bars at the
rear of an X12TE-GRID. Do not swap ends!
Correct orientation puts the pick holes of all spreader bars in alignment in the same vertical
plane. The spreader bar at the bottom of an array will always be oriented right-side-up.
2019-07 | 04 | F.01U.310.953
X12
TE GRID
-
Installation manual
X-LINE ADVANCE System Rigging & Transport
PICK HERE
SAFETY
HERE
X1
X2
THIS SIDE
THIS SIDE
TO REAR
TO FRONT
Spreader bar
Electro-Voice
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