Microphone Input Levels
Recorded levels are affected by the gain setting of the microphone input preamplifier.
For example:
at +20 dB the microphone input level equivalent to Full Scale is -7 dBu (0.36 Volts RMS)
at +54 dB the microphone input level equivalent to Full Scale is -36 dBu (0.013 Volts RMS).
Line Input Levels
Recorded levels follow the level of the incoming signal when Gain is set to 0dB.
At 0dB, the input level equivalent to Full Scale is +18 dBu (6.5 Volts RMS).
To achieve 14 dB of input headroom set the nominal input to +4 dBu (1.3 Volts RMS).
Note: Input Gain may also be set to +10dB if working with consumer line level equipment.
Headphone
The sub menu provides controls for headphone output volume channel mixing.
Master Volume: Adjusts the overall headphone volume.
Range is -18dB to 0dB in 1dB steps. Default is -6dB.
Volume Left, Volume Right: Adjusts volume for the left and right sides independently.
Range is -12dB to + 6dB in 1dB steps. Default is 0dB.
Mix: Selects which audio channels feed the left and right side headphone outputs.
1L + 2R Feeds channel 1 to the left side, channel 2 to the right.
3L + 4R Feeds channel 3 to the left side, channel 4 to the right.
Quad Mix Feeds channels 1&2 to the left, channels 3&4 to the right.
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