Martin Audio MLA MINI, Руководство для продвинутых пользователей

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MLA Mini Display 2.2 V1.0
121
MLA MINI
DISPLAY 2.2
For most medium to large sized array this should be easily achievable and will leave plenty of
DSP power for other tasks and will retain a far more natural and subtle change of tonal balance
throughout the audience.
The final option is to set the reference SPL at which Display 2 will attempt to achieve the
smoothest coverage as close as possible to the targets that you have specified. If you select
85dB you stand a better chance of achieving the system goals as it gives the option to allow
great cancellation or gain shading to reduce levels in areas closer to the array thus making the
coverage as even as possible and potentially closer to your SPL deltas. If however you need as
much SPL as possible and have set your SPL deltas to allow a greater variation from start to
stop you can select a higher SPL, 100 or 105dB and you will achieve a higher output from the
system. The trade-off however is that Choosing SPL levels that are very low means that a high
input signal level will be necessary to drive the arrays to high SPL’s. In some instances this
could cause the input to the cabinets to limit, as MLA series can accept a maximum of +18dBu
peak input level. Choosing levels that are higher than the default will increase the noise floor.
The default levels are set to provide a compromise between noise floor vs input level required to
drive the system to high SPL’s. So unless you have a very good reason to choose otherwise we
would strongly recommend using the default figures. These are 110dB for MLA, 105dB for MLA
Compact and 100dB for MLA Mini.
From version 2.2 onwards the reference figure is calibrated so that you will measure that figure
at the reference position with 0dBu applied to the array input. With the array gain structure now
calibrated it was necessary to look at the subwoofer gains to maintain a good balance. Vu-Net
v2.0 will detect the optimisation reference figure in the Display d2p file and will automatically
trim the sub input gain. For an MLA system or other system optimised at 110dB or higher, the
sub gain will be increased to +10dB, for MLA Compact or other system optimised at 105dB the
input gain will be set to +5dB and for MLA Mini or other system optimised at 100dB or less the
gain will remain at 0dB
Once you have determined your Start and Stop Deltas you can click on Done to close the
Coverage window and you can move on to the Splay tab.