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X-Array™ Loudspeaker Systems
Angle = - (Holes Showing) x 1.8° for the Xrsl
where negative ("-") angles indicate down-
ward angles and positive ("+") angles indicate
upward angles.
For example, when the fittings of the Xrsl straps
are inserted into cutout #0 on the grid and cutout
#0 on the top enclosure (position "0-0"), as shown
in Figure 10b, no holes are showing and the angle
of the top enclosure relative to the grid is
-(0 x 1.8°) = 0°. If cutout #0 on the grid and #3 on
the enclosure are chosen (position "1-3"), as
shown in Figure 10c, a total of 3 holes are show-
ing, making the angle of the top enclosure relative
to the grid -(3 x 1.8°) = -5.4°.
Using the Xrss (short wire-rope rigging strap)
Between Enclosures: The short Xrss rigging
straps may also be used between enclosures;
however, the Xrss offers a lesser range of down-
ward angles than the long Xrsl rigging strap. The
short Xrss rigging straps allow a range of angles
between the enclosures of 0° (enclosures are par-
allel) to 10.8° down in 1.8° increments. The Xrss
rigging strap is 101.6 mm (4.0 in.) shorter than
the Xrsl strap. Therefore, for the same angle,
there will be four more holes showing when the
short Xrss rigging strap is used compared to the
long Xrsl strap. This results in an additional 7.2°
upward angle when the short Xrss is used. Thus,
the equation for the Xrss becomes:
Angle = 7.2°- (Holes Showing) x 1.8° for the Xrss
where negative ("-") angles indicate downward
angles and positive ("+") angles indicate upward
angles.
For example, if the fittings of the short Xrss straps
are inserted into track cutout #2 on both the upper
and lower enclosures (position "2-2"), as shown in
Figure 11b, the resulting angle between the enclo-
sures is 7.2° - (4 x 1.8°) = 0° with a total of
4 holes showing. If the fittings of the Xrss short
straps are inserted into track cutout #4 on both
the upper and lower enclosures (position "4-4"),
as shown in Figure 11c, the resulting angle be-
tween the two enclosures with 8 holes showing
is 7.2° - (8 x 1.8°) = -7.2°.
Using the Xrss at the Grid: The short Xrss
rigging straps are the primarily recommendation
for use with the ATM grid because they offer the
ability to angle the top enclosure both upward
and downward relative to the grid. The short Xrss
rigging straps allow the top enclosure a range of
angles relative to the grid from 7.2° up to 3.6°
down in 1.8° increments. The same equation dis-
cussed in the previous paragraph for determining
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