Target Delta Selection - Martin Audio MLA User Manual

MLA System
USER GUIDE
If you un-check the air absorption there will be no compensation applied to the optimisation, you can still enter the Temperature,
Humidity and Pressure so if you need to create a new optimisation including air absorption it is as quick and easy as checking the
box. Be aware that environmental conditions change drastically throughout the day! A 6.00 am load-in is going to give very, very
different readings compared to a packed, 8.00pm show with all lighting, smoke machines and pyrotechnics going full tilt!

Target Delta Selection

The target Delta selection is located in the bottom right corner and is where the SPL variation from audience start to finish is
entered;-
This unassuming little box is one of the most powerful features of Martin Audio multicellular systems, whist all other systems on
the market are trying desperately to achieve a 3dB drop in level for every doubling of distance away from their arrays, with MLA
Mini you can simply specify exactly the loudness contour across the venue. If you want the back row to be as loud as the front
then you simply type 0 in both the start and stop delta positions and the system will give you exactly that. It can even make it
louder at the back than the front if that is what you want.
The start and finish deltas are referenced to the yellow triangle which nominally is placed in the middle of the audience region
when you enter the coverage area in the venue slice. You have the opportunity to move it and if you didn't do so in the venue
slice you can click on the 'Move Ref' button and move your cursor around the venue planes. The triangle will follow your cursor
sticking to the planes until you are happy with its position and a further mouse click with cement it in its new position.
Alternatively you can enter either an x or h figure to specify the horizontal position or height of the reference point and it will
jump to the closest position on the venue shell that corresponds to the coordinates you have entered.
It is tempting to automatically position the reference position wherever front of house is positioned but this is not in the least
bit necessary. The reference is used to adjust the contour so its position should be dictated by how you want the volume to
change from the start to the finish of the audience region. Take a look at the following diagrams;-
MLA System User Guide V2.1
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