ELECTRO-VOICE
®
Xi-A Rigging Manual
4
2.2 The Rigging Hardware
The Xi-A flying system utilizes the highest-tech aircraft-type hardware available for securing heavy
loads. Four pieces of heavy-duty, aircraft-type, “L-Track” rigging hardware, specially machined
extrusions of very-high-strength, aluminum-alloy material, are mounted in each enclosure. The
track pieces are secured to high-strength, aluminum-alloy brackets that are an integral part of the
Xi-A flying enclosure. Enclosure dimensions and rigging track locations are shown in Figure 2.2 for
all of the Xi-A loudspeaker systems. For attachment to the track, the GS-1B grid-strap assembly,
the LS-1B, LS-2B and LS-3B linking strap assemblies, the RS-1B double-stud, swivel-ring fitting
assembly and the RS-2B single-stud, swivel-ring fitting assembly are available from Sound
Manufacturing, Inc. (See Appendix A for details.) These assemblies, shown in Figure 2.3, have
been specifically designed for optimal implementation of the Electro-Voice L-track flying systems.
The GS-1B includes a double-stud, swivel-ring fitting on one end for attachment to the enclosure
and a safety hook on the other end. The safety hook may be attached to 5/8-inch shackles, or
may be secured directly to the grid through a 7/8-inch diameter hole in the grid bar-stock material.
The LS-1B, LS-2B and LS-3B have double-stud swivel-ring fillings on both ends for linking two Xi-
A enclosures together. The GS-1B, LS-1B and LS-2B rigging straps utilize polyester webbing strap
material. Polyester webbing was chosen for its tremendous strength and because of its dynamic
flexing capabilities. The force from any sudden jolt or shift in the load is absorbed by the strap
rather than transmitted directly to the loudspeaker enclosure. In addition, polyester webbing is a
flexible material that is easy to handle.
Figure 2.1a:
Rigging Hardware on the
Top and Bottom of the Enclosures
Hoist Motor
Wire Rope Sling
5/8” Shackle
Grid
GS-1B
LS-3B
Figure 2.1b:
Rigging Hardware on the
Sides of the Enclosures
Hoist Motor
Wire Rope Sling
5/8” Shackle
Grid
GS-1B
LS-1B
