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TOPVIEW
Figure 25. Isometric view of a
pl$fonn.
Figure 26. wings between screen loudspeakers.
When possible, large wings should be mounted between systems, as shown in Figure 26. The
surfaces should ideally be finished with sound absorptive material,
as.should
any exposed wall areas
behind the screen should be finished with sound absorptive materials.
The screen loudspeakers should be spaced laterally so that good stereo imaging is ensured.
All of the screen loudspeakers should be oriented so that they point to a location on the centerline of
the house at a distance about two-thirds the length of the house. This will require that the left and right
screen loudspeakers be toed in regardless of screen curvature. This will ensure that proper stereo
imaging will be perceived by those patrons seated toward the sides of the house. Taking into account
the requirements for masking for various aspect ratios, the spacing between left and right
loudspeakers should be broad enough to produce ideal stereo for the widest format. Acoustically
transparent masking material should be used so that, when masking is in place, there is negligible
high frequency loss. The wider loudspeaker spacing, when used for a narrower format, will be quite
acceptable, even desirable (5).
C. Subwoofer Mounting
For best results, the subwoofers should be placed on the floor below the screen loudspeakers
and, if possible, against a vertical wall or baffle. They should be clustered together, rest on rubber
pads, and be free of rattles.
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