1. GENERAL
Line arrays have now become the prefered solution in high quality concert sound applications. Line arrays
have now become the preferred solution in high quality concert sound applications. On account of their
directivity, projection and low distortion, line arrays are considerably more suitable for providing high quality
sound reinforcement especially to audience areas that extend widely in the horizontal plane than classical
systems with their narrow horizontal dispersion angle.
Conventional line arrays are large, heavy, expensive and extremely costly to set up. They are therefore
seldom used for small to medium-sized events despite their advantages in terms of quality.
DYNACORD COBRA compact line array systems on the other hand are extremely compact, simple to set
up and extremely cost efficient. They therefore offer line array performance in the type of situations where
conventional large line arrays can provide no economically viable solution.
The extremely wide horizontal dispersion of the DYNACORD COBRA compact line array system resulting
from its generation of quasi-cylindrical sound waves means that it can provide coverage to large audience
areas without the destructive interference or ‘combing’ that bedevils conventional horizontal clusters
(see fig. 01).
The shallow and precisely defined vertical directivity, free from strong vertical ‘side lobes’, avoids the
undesired radiation of sound towards ceiling and floor areas, eliminating to a large extent the interference
produced by reflections
(see fig. 02).
Figure 01 Figure 02
The nearfield zone of line array systems extends considerably further than that of classical systems.
Noticeably fewer fluctuations in sound pressure level occur in the vicinity of the line array.
The direct sound level of a line array in the nearfield only falls by some 3 dB as the distance doubles,
whereas with classical systems it falls by 6 dB (twice as fast) in the farfield.
DYNACORD COBRA line array systems can therefore achieve the same sound pressure levels in the most
remote sections of the audience area as conventional systems without the need for a sharp increase in
sound pressure levels in the areas near the speakers. Since the slope is markedly shallower, coverage of
the audience area is far more homogeneous and free from the excessively steep increase in SPL directly in
front of the PA that is the bugbear of classical systems.
DYNACORD COBRA compact line array systems are therefore extremely low in feedback and even the
coverage of the nearfield is far less problematic than that of conventional systems.
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