Instruction d'utilisation Meyer Sound PARABOLIC SOUND BEAM SB-1

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SB-1Q&A
The Meyer Sound SB-1
Parabolic Sound Beam is
a powerful, long-throw
device for projecting
mid- and high-frequency
energy over distances
from 100 to 500 feet.
By producing an
extremely narrow, tightly
controlled beam of sound
energy, the SB-1 enables
very effective long-range
“fill” coverage in large-
scale sound reinforcement
applications.
The SB-1 comprises an
optimized aspherical
waveguide with 2-inch
throat (4-inch
diaphragm diameter)
compression driver
feeding a large parabolic
refl

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SB-1Q&A continued A Why use the SB-1 rather than delayed loudspeaker arrays? B Delayed loudspeakers are a common and effective alternative to long- throw horns, but there are some constraints in their application. As shown in Figure 1a, because the fill speakers are physically separated from the main array(s), they can only be aligned for seats that lie directly on their primary axis. For all other seats in their coverage area, varying differences in path length from the main PA can cause cance

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mounted at the center of the dish. The cone is driven by special band- limiting and phase manipulating circuitry that uses phase cancellation to suppress side lobes in the range of 500 Hz to 1 kHz. This sophisticated scheme reduces the amplitude of the side lobes by over 50 dB, substantially extending the usable mid-frequency response. Constant beamwidth with frequency is achieved by feeding the SB-1 reflector from an optimized aspherical horn that is placed at the focal point of the dish. Devel

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R R E E - - H H C C S S I I Meyer Sound Laboratories has devoted itself to designing, manufacturing, frequencies. The best propagation of sound waves occurs when the and refining components air is either very hot and moist, or very cold and dry. In more moderate conditions, attenuation due to air loss may exceed 3 dB that deliver superb sonic per doubling of distance from the SB-1. Interestingly, unlike conventional horn systems, two adjacent SB- reproduction. Every part of 1s can be aimed into