D.A.S. Audio Aero 50 Rack - Manual (Page 10)

10k 5k 2k 1k 500 200 100 50 20 20 20k Hz
120.0
dBSPL
110.0
100.0
90.0
80.0
70.0
DAS Audio SA LogChirp - Frequency Response 09-05-2012 16.47.53
CH A dBSPL 1/12 Octave 192kHz 131K Rectangular Start 0.00ms Stop 682.66ms FreqLO 1.46Hz Length 682.66ms
File: PLMV5.2 A 1m corte a 80Hz.mls
With the DSP presets provided the frequency
response of one single cabinet is flat.
Graph shown corresponds to 1 aero 50 measured
at 3m in an indoor room (1/12 octave resolution):
When coupling or adding more systems the low
and mid ranges couple much more than the high
frequency one. See the the graph below ( 1 aero 50
vs 3 aero 50):
The use of a DSP-4080 at FOH is mandatory to
correct this effect (low an mid range coupling) and
to have different sends to the PA (long throw, mid
throw, short throw) or to other systems (Ffill, subs
etc) as well as to properly time align all of them.
In the graph shown below different array
corrections for different number of aero 50 cabinets
(1/24 octave resolution).
The array correction
The array correction
preset version Number of Units
Type B presets: to be used at the FOH DSP-4080
The preset will correct the array effect and the number of
cabinets used.
These presets will be named as follows:
A50Vx.y 8U
A50Vx.y 10U
A50Vx.y 12U
For instance: A50V52 16U
DSP Number of units EQs
DSP-2060A / 4080
16 units
f =2k57Hz Q=0.59 Gain -8.5dB Low Shelf
f =2k57Hz Q=0.59 Gain -7dB Low Shelf
f =2k57Hz Q=0.59 Gain -6dB Low Shelf
f =2k57Hz Q=0.59 Gain -4.4dB Low Shelf
f =2k57Hz Q=0.59 Gain -2.5dB Low Shelf
f =595Hz Q=20 Gain -3dB Bell
f =595Hz Q=20 Gain -3dB Bell
f =595Hz Q=20 Gain -3dB Bell
f =595Hz Q=20 Gain -3dB Bell
f =595Hz Q=20 Gain -3dB Bell
14 units
12 units
10 units
8 units
Low Shelving filters with different gain values.
See below the electrical curve of the array correction
on the processor for 12 aero 50 units:
A50rack - 10
1 aero 50
3 aero 50
Low Shelving -3dB
Low Shelving -6dB Low Shelving -8dB
No array correction