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Adjusting Levels
Use the following steps to adjust the input and recording levels. The input levels must be adjusted
before adjusting the recording channel levels or the monitor channel levels.
Adjusting Input Levels (before recording channel levels are adjusted):
1.
Connect microphones or line sources to the DMX8 USB Mixer inputs.
2.
For each input select the appropriate input type (
Line
,
Dynamic
, or
Condenser
) using the
Input Select
buttons. If
Condenser
is selected and phantom power is required by the
microphone click the
Phantom Power
button for the input to turn phantom power on.
3.
Start with all the Input Level sliders set to 0dB.
4.
For each microphone input talk loudly into the microphone at a distance of 12 inches, or
for each line input provide a line level signal of nominal level. View the front panel
indicator LED for the appropriate input, and adjust the
Input Level
slider such that the
LED lights green constantly and occasionally turns red. If you are unable to achieve this
condition then check you have the correct input selection for the input type being used.
Adjusting Recording Channel Levels (after inputs are adjusted):
1.
Use the
Recording Channel
buttons to select the recording channels that each input will
be mixed to. Each input can be mixed to any of the 4 recording channels.
2.
For each recording channel adjust the
Recording Channel Level
slider. It is important to
adjust these sliders so that an adequate signal level well above any background noise but
below the clipping threshold is obtained. To adjust the recording channel levels:
3.
Start with all the
Recording Channel Level
sliders set to 0dB.
4.
Adjust these sliders so that when talking loudly into a microphone at a distance of 12
inches or providing a line level signal of peak amplitude, the meters light all bars
including the occasional red bar at the top of the scale. It is important to get this setting as
high as possible with only occasional indications of the red bar lighting.
Adjusting Monitor Channel Levels (after inputs are adjusted):
1.
Use the
Monitor Channel
buttons to select the monitor outputs for each input. Each input
can be mixed to any of the 4 monitor channel outputs.
2.
For each monitoring channel adjust the
Monitor Channel Level
slider. Care should be
taken not to overdrive external equipment with these signals. Start by setting these sliders
10dB lower than the average
Recording Channel Level
setting, and connect to external
equipment such as speakers, teleconferencing system, or other devices. Adjust these
sliders for each output to provide appropriate volume levels at the external equipment.
