Arrangement Of Subs - PROEL AXIOM - VERSION 2.0 Manual

4.6. THE LOW RANGE
Figure 4.7: Simplified pattern of the combination mechanism for the elements of the array: (a) low frequencies (b)
high frequencies.
4.6 The low range
AXIOM Vertical Array Systems do not feature a an extended range and, with the exception of certain
applications requiring only the reproduction of the vocal range, need additional subwoofer units for the
reproduction of the whole spectrum. An AX3210P System needs either subwoofer unit AX1118SP
(which can be flown) or the earthbound subwoofer EDGE121SP from the EDGE Series. The quantity
of subwoofers you need depends on the number of satellites and on the kind of music that has to be
reproduced; some kinds of music programs require a remarkable emphasis on the lower part of the
spectrum. If the system is not correctly dimensioned, no equalization will provide the acoustic energy
needed.

4.6.1 Arrangement of subs

Typically, subwoofers are arranged under the array towers in a L+R configuration. In a hypothetical
semi-free field, this configuration leads to an interference that provokes a central emission lobe and two
secondary lateral lobes
could be rather intense and create instability and equalization difficulties.
There are several solutions to homogenize the lower frequency diffusion; some of them require sep-
arate processing and a physical displacement of the subwoofers that is not always possible due to
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For a certain frequency range which is function of the distance between positions L and R.



Figure 4.6: Typical frequency response for vertical arrays
(a)
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. Between the lobes there will be areas of cancellation that in certain situations
   
  
  
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4. Sound design with AXIOM
(b)