ELECTRO-VOICE
®
X
LC
i
TM
Rigging Manual
5
1. X
LC
i Rigging System
1.1 Overview of the X
LC
i Flying System
The X
LC
i loudspeaker systems have been designed to construct acoustic line arrays. Acoustic line
arrays typically consist of independent columns of loudspeaker systems. This simplifies the
rigging system.
The X
LC
i loudspeaker enclosures utilize a hinged rigging system that makes constructing arrays
easy, predictable and repeatable. This front-hinging rigging concept allows arrays to be
constructed with the least possible spacing between enclosures. The front and back rigging
hardware for linking two enclosures together are captured as an integral part of the side rigging
frames.
A basic array is shown in Figure 2 that illustrates the integral components that make up a typical
X
LC
i flying system. The X
LC
i enclosures are vertically trapezoidal - taller at the front than at the
back. The enclosures are hinged at the front corners using rigging hardware specially designed
for the X
LC
i system. The enclosures are linked at the rear using rigging arms that have multiple
attachment positions. The different positions adjust how close the back corners of the enclosures
are pulled together; hence, adjusting the vertical angle of the bottom enclosure.
1.2 X
LC
i Enclosure Rigging Hardware Details
On each side of the enclosure there are two X
LC
i rigging plate assembies. The structural load is
transmitted through the plate minimizing the load on the loudspeaker enclosure shell. Figure 3
illustrates the X
LC
i enclosure rigging hardware components. Figures 4a and 4b show key
dimensions for the rigging hardware.
On the side of the enclosure towards the front is the Front Rigging Plate. The front rigging plate
has two threaded holes at the top and bottom for attaching the Front Connector Bar with the
included hardware. There is also a hole in the middle of the front rigging plate that accepts a
Rigging Handle. The rigging handles aid in positioning cabinets while assembling and flying an
array, and are intended for temporary use only.
The Front Connector Bar has 3 circular holes and one crescent shaped hole through it. The end
with two holes gets bolted to the top of the front rigging plate. The opposite end with the crescent
shaped recess is bolted to the front rigging plate of the cabinet above.
On the side of the enclosure towards the rear is the Rear Rigging Plate. There is a series of holes
at the bottom of the plate, and a single hole at the top. A Rear Connector Bar is bolted through the
top hole of the plate from an enclosure below and then bolted through one of the holes in the
pattern, linking the two cabinets together. The vertical tilt angle of the bottom enclosure is then
determined by the hole in which the rear connector bar is bolted through.
The X
LC
i-127 and X
LC
i-127+ enclosures may be angled from 0° to 8° in 1° increments, while the
X
LC
i-118 enclosure may be angled from 0° to 12° in 1° increments. The angle adjustment holes
are detailed in figures 4a and 4b. The bolts fix the distance the back corners of the enclosures
may be separated.
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