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ELECTRO-VOICE

Rigging Manual

The reader should consult an experienced structural engineer to perform the complex structural
analysis.

WHEN SUSPENDING ANY X

i LOUDSPEAKER SYSTEM OVERHEAD, THE

WORKING-LOAD LIMITS MUST NEVER BE EXCEEDED FOR EACH INDIVIDUAL
RIGGING POINT, AND THE OVERALL ENCLOSURE.

i-127, X

i-127+ and X

i-118 Front Rigging Structural-Strength Ratings

The working-load limit of each of the front rigging points on the X

i enclosures is dependent upon

the front connector bar, bolts, front rigging plate, the enclosure and the angle of pull. The struc-
tural-strength ratings for the front rigging points are identical for the X

i-127, X

i-127+ and X

118, and are shown in Figure 8. The enclosures have two rigging points at the front. The structural
ratings shown in Figure 8 are for a single rigging attachment point. Each rigging point has the
same rating.

The front-to-back structural-strength ratings for the front rigging points shown in Figure 8 cover a
full 360° rotation. Although it is not possible to put the front connector bars into tension over 360°,
it is possible for the front connector bars to go into compression with some array configurations.
Therefore, the 360° rating is necessary to accommodate both tension and compression. It also
should be noted that the X

front rigging is only rated for use over side-to-side pull angles of a

maximum of ±5°.

i-127, X

i-127+ and X

i-118 Rear Rigging Structural-Strength Ratings

The working-load limit of each of the rear rigging points on the X

i enclosures is dependent upon

the rear connector bar, bolts, rear rigging plate, the enclosure and the angle of pull. The structural-
strength ratings for the rear rigging points are identical for the X

i-127 and X

i-127+, and are

shown in Figure 9. The structural-strength ratings for the rear rigging points on the X

i-118 are

shown in Figure 10. The enclosures have two rigging points at the rear. The structural ratings
shown in Figures 9 and 10 are for a single rigging attachment point. Each rigging point has the
same rating

It should be noted that the front-to-back-angle range shown in Figure 10 for the X

i-127 and X

127+ consists of two 8° arc segments, while the front-to-back-angle range shown in Figure 11 for
the X

i-118 consists of two 12° arc segments. When both the front and rear rigging are installed,

the front connector bar always prevents the rear connector bar from having any kind of front-to-
back force. Thus, it will always be axially loaded. For the X

i-127 and X

i-127+, a tensile force

can only be applied over an angle range of negative 0°-8°, while the X

i-118 can only be over a

range of negative 0°-12°. The angles are negative because the boxes can only be angled
downward. (Imagine two boxes facing straight ahead. The bottom enclosure can only be tilted
downward because the rear rigging can only be adjusted to bring the rear corners of the
enclosures together.) Under compression, the forces would be from positive 172°-180° for the
X

i-127,and X

i-127+ and positive 168°-180° for the X

i-118. It also should be noted that the

i rear rigging is only rated for use over side-to-side pull angles of a maximum of ±5°.