USER MANUAL Loudspeaker Management System LMS-D24, LMS-D26, LMS-D6

user manual
TA-890
TA-890 user manual
Page 45
Summing up
Generally left and right bass stack are deployed. These should be kept as far apart as
possible, and stacked high or fanned to minimise beaming. Toeing these out can hep to
reduce cancellation between left and right stacks.
On large sites or in situations where left to right cancellation is particularly bad, a fan shaped
array will solve the problem. When possible smoother coverage can be obtained by using
additional processing to create a Bessel array.
If noise pollution is a serious problem and space and logistics permit it is desirable to create
an end-firing array. Whilst this will not help solve any left to right cancellation this will
greatly reduce the amount of energy produced behind the array.
Whenever practical, when spacing the enclosure ¼ of a wavelength apart do so at around
80Hz with Aspect TA-890L enclosures but lower at 60Hz when used in combination with the
TSW-218.
Deployment of large scale sound systems is often a compromise it is advisable to explore
these possibilities well in advance of a show to determine the best possible results for the
venue. Always remember that large amounts of LF energy a short distance from the audience
area may well cause hearing damage if deployed poorly. Turbosound accepts no
responsibility for loss of hearing due to the misuse of our systems.