X12Pu-Bgk Pull-Up Kit - Electro-Voice X1-212/90 Installation Manual

X-LINE ADVANCE Systems
6.4.3

X12PU-BGK pull-up kit

X12PU-BGK pull-up kit is used when the compression rigging method is being used with an
array or when extreme down angles beyond the capabilities of the extended grid are required.
This is a way to achieve extreme down angles, such as might be encountered in a distributed
arena system. When using one (1) X12TC-GRID and one (1) X12PU-BGK in this fashion, the
angle between the suspension lines must never be allowed to exceed 30°. For maximum
angles, restrictions and limitations, consult LAPS 3 and follow all warning, limitations and
restrictions recommended by the software.
Figure 6.7: Double pick point maximum angle
For rear-rigging compression, the user must build a pull-up assembly. The X12PU-BGK includes
two (2) spreader bars and two (2) pull-up link bars. One (1) spreader bar attaches to the
X12PU-BGK bottom. The other spreader and the two (2) pull-up link bars attach to the bottom
of the X12TE-GRID top grid at the rear-most attachment position. The pull-up assembly
attaches between the two (2) spreader bars. The remaining components of the pull-up
assembly must be provided by the user.
A lever hoist will be used for the pull-up assembly. The user extends the chain from the hoist
and attach to the pull-up spreader bar on the X12TE-GRID using a 5/8 shackle. One (1) end of
a 3-foot-long (or one-meter-long) wire rope sling attaches to the bottom hook of the hoist. The
other end of the wire rope sling attaches to the spreader bar on the X12PU-BGK using a 5/8-
inch shackle.
The user provides the two (2) 5/8-inch shackles, wire rope sling, and lever hoist. Electro-Voice
recommends using a wire rope sling with a load rating of at least 2400 pounds (or 1100 kg)
for vertical configuration. Electro-Voice recommends using a Columbus-McKinnon model 653
lever hoist having a 1.5-ton rating and 20 feet of chain.
Using these components, the pull-up assembly accommodates a quantity of 8 to 20 X1 or X2
loudspeaker systems. This pull-up assembly has been modeled in LAPS 3. If a different pull-up
assembly is used, the angle at which an array hangs may different from what LAPS 3 predicts.
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 a 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.
2015.04 | 02 | F.01U.310.953 Installation Manual Electro-Voice