JRC Alphatron Marine AlphaAnnounce Installation And Operation Manual page 45

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Message volume determines the level for all pre-recorded messages. The control value is 0dB .... -40dB.
Master Level
Master volume is the overall volume for DIGITAL AMPLIFIER. The change in master volume changes the announcement
and stored message volume also. The control value is 0dB .... -100dB.
Default
As the presets have significance affect to the total capability of the sound response and level, it is necessary to do the
DSP-settings with a great care. Therefore there is a "Default" button in the Preset window's bottom edge to load the
default settings as basic settings for a default. It is strongly recommended to use it, especially if the system contains any
LINE TRANSFER.
To get an impression of the audio input stage of each DIGITAL AMPLIFIER, take a look at the Block Diagram:
45 | AlphaAnnounce Software Configuration

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