The Line Array Bet Acoustics Mass1015P - Ecler BET ACOUSTICS MASS1015P Manual De Instrucciones

As is to be expected, each of the acoustic enclosures that make up the line array consists of
different transducers, each of which is perfectly adapted to a range of frequencies to be reproduced and,
in general, with directive behaviour that varies with frequency and differs notably from the directional
behaviour of a point source.
The vertical directivity of a line array is determined using the following mathematical expression:
According to this mathematical function, the vertical response of a line array group is more
directive as frequency increases, low frequencies being almost omnidirectional.
The number of acoustic enclosures in a line array is related to resultant vertical directivity and is
therefore an important parameter on designing equipment for specific applications.
BET ACOUSTICS makes available to you the simulation program EASE FOCUS with the
corresponding library for predicting the behaviour of the MASS1015P system. EASE FOCUS allows
rapid and efficient determination of the number of acoustic enclosures needed as well as the optimum
angle between them to obtain sufficient and homogeneous sound pressure levels in the entire audience
area.
EASE FOCUS can be downloaded free from www.betacoustics.com

3. THE LINE ARRAY BET ACOUSTICS MASS1015P

3.1. General description of the system
The BET ACOUSTICS MASS1015P is a three-way line array system consisting of:
 1 15" bass loudspeaker
 1 10" middle frequency loudspeaker
 2 1" compression motors for treble frequencies equipped with waveguides and a 90º diffusor for
horizontal coverage
The system is capable of reproducing an extensive bandpass range, (35 Hz – 18.000 Hz)
sufficient to make it a full range system which makes it possible to do without woofer or subwoofer
support systems. In this manner, a more coherent wave front is obtained as the entire information
bearing frequency range (80–18.000Hz), in addition to the most dense mass motion range (35–80 Hz),
proceed from the same source.
The acoustic enclosures that constitute the system are made from 18-mm thick laminated
phenolic birch wood with sufficient internal reinforcements to prevent undesirable mechanical vibrations,
providing the required robustness for the intended type of application.
With a textured black paint finish, each acoustic enclosure contains a flying system, 4 lateral
handles for transport as well as a frontal protective grille with acoustically transparent foam that protects
loudspeakers from splatter and against entry of foreign objects that occasionally can damage them.
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