The VU (Volume Meter) is used to show the sound operator the level the sound is at in dB (Decibels) from what your recording, so it's easy to find the right level. When a member of the talent is speaking you want to find the right mix and have flexibility to adjust when they change their volume, so the ideal level to use is around -8dB and -18dB so their is room to go louder or quieter depending on if and when the talent gets louder. To find a more suitable and realistic sound when a live TV programme is being recorded there is a stereo output to use. As shown in the diagrame the VU Meter can go up to around +7 dB but anything above 0dB would come out very unclear and loud so there is no need to go as high as that.
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