17
ARA series Users Manual
ARA series
Array Balance
To compensate the acoustical coupling between elements of a
line array system, two main parameters have been implement-
ed in the units. The “target” frequency response of the entire
system will be defined by the use of these 2 parameters.
Shown below, the average frequency response trace of a 12 el-
ement Lara system, measured with 3 microphones in different
positions.
In this particular case AB Low was set to -4, and AB High was
set to 4. The acoustical target response obtained with these 2
values had a lot of energy in the low-mid frequency domain as
it was required for the application.
ARRAY BALANCE LOW (steps of 1dB):
Low Shelving filters starting at 400Hz with 8 different values in gain.
Array Balance Low 0: 0dB
Array Balance Low -1: -1dB
Array Balance Low -2: -2dB
Array Balance Low -3: -3dB (shown in the graph above)
Array Balance Low -8: -8dB
ARRAY BALANCE HIGH (steps of 1dB):
High Shelving filters starting at 1490Hz with 8 different values in gain.
Array Balance High 0: 0dB
Array Balance High 1: 1dB
Array Balance High 2: 2dB
Array Balance High 3: 3dB
Array Balance High 8: 8dB
In SARA and LARA systems the “default parameters” are Array
Balance Low 0, Array Balance High 5.
To obtain a flat frequency response of one unique system (device)
to be used for instance as a front fill, the user shall use Array
Balance Low 0, Array Balance High 0.
