Turbosound LMS-D6 - Manual (Page 42)

user manual
TA-890
TA-890 user manual
Page 42
The result here is tight horizontal pattern control with two side lobes. This is a common
application of subwoofers used in the field.
There are however, several points to notice.
Firstly, almost as much energy is produced behind the array as in front of it, which can create
problems on stage or on multiple-staged outdoor events.
At the same time this will always provide a tightly controlled beam, providing focused low
end energy which will drop off sharply outside the coverage area.
On a large site it will be necessary to extend the line to multiple sources in order to provide
enough horizontal coverage.
Fanned bass
Again the sources are spaced ¼ of a wavelength apart however this time there is a 15 degree
arc across the array.
The result here is a broader horizontal dispersion than the previous example. This solves the
issue of a beam of bass being too tight, but can further accentuate problems on stage due to
the tightly focused LF energy behind the middle of the array.