Bose Panaray MA12 Landasan Teknis & Diskusi - Halaman 17
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Figure 8. If we reduce the horizontal dimension of the source, the
radiation pattern gets wider and starts to spread out (top). The vertical
radiation pattern does not change because the vertical dimension of the
source has not changed (bottom).
If the horizontal and vertical radiation patterns of Figure 8 are combined into a three-
dimensional radiation pattern, the result is waves that are cylindrical in shape. To be more
exact, the radiation pattern is wedge-shaped, or like a piece of a cylinder, as shown in
Figure 9. The shape of the source responsible for this wedge-shaped pattern is slim and long:
in other words, it is line shaped. Thus a line-shaped source where all parts of the line move
with equal magnitude and phase produces a wedge-shaped radiation pattern. The sound
radiates in and out and to the sides, but not up and down.
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MA12™ Modular Array: Technical Foundation & Discussion
April 2002, © Bose Corporation, All Rights Reserved
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