M-Audio air 192 Mode D'emploi page 7

9. Monitor Level: Adjusts the output volume of Main TRS and RCA Outputs (1/L 2/R), which
should be connected to your powered monitors or amplifier system.
10. Monitor Mix: Adjusts the mix of the audio signal from your inputs (Direct) and the audio output
of your computer (USB) that will be sent to the Main Outputs and Headphone Output.
Note: When set to Direct, the left channel will be Input 1, and the right channel will be Inputs
2. You can sum the left and right channels (to hear both inputs as a single-summed mono
signal) by putting the Direct Monitor switch to the Mono position.
This knob is useful for dealing with "latency" when you are recording in your DAW. Latency is a
delay in sound that may occur between the incoming sound (playing your instrument, singing,
etc.) and outgoing sound (when you hear it in the DAW).
Latency is often the result of the "buffer size" setting, which is usually located in your DAW's
Preferences, Options, or Device Setup menu. Higher buffer sizes generally result in higher
latency. In some cases, lower buffer size settings can consume a lot of your computer's CPU
and cause audio glitches. To prevent these audio glitches, you will need to use a higher buffer
setting, and this may result in latency.
If you are experiencing latency when recording, adjust the knob towards the Direct position to
increase the blend of unprocessed audio from your inputs directly to your Main Outputs and
Headphone Output. This will let you hear the incoming audio from your inputs without latency
while still being able to hear the audio from your DAW. When listening to the playback, adjust
the knob all the way to the USB position.
If your computer is powerful enough, you may be able to set the buffer size setting in your DAW
low enough such that you may never need to listen to the direct audio signal from your inputs.
In this case, set the Monitor Mix knob all the way to the USB position to monitor only the audio
output of your DAW.
11. Direct Monitor Selector: Leave this switch in the right Stereo position to monitor the direct
input signal with Input 1 in the left channel and Input 2 in the right channel. This is useful if you
want to directly monitor a stereo mic setup such as a stereo signal from a keyboard, or
overhead drum mics. Put this switch in its left Mono position (Mono LED is lit) to monitor the
direct input signal with all inputs summed and heard equally on each side. This is useful for
monitoring a guitar or vocal mic signal. This switch does not affect the DAW playback or how
your sound is recorded into your DAW; it only affects how you hear the input signal in the
Headphone Output (when the Headphone Source Selector is set to 1/2, and the Monitor
Mix is set to anything besides USB) and Monitor Outputs.
12. Headphone Source Selector: This switch selects which outputs (on the rear panel) are also
sent to the Headphone Output, Main Outputs 1–2 (1/2), or Outputs 3–4 (3/4).
13. Headphone Output (front panel): Connect 1/4" (6.35 mm) TRS headphones to this output. The
mix you hear from these outputs will be determined by the Headphone Source Selector,
Monitor Mix knob, Direct Monitor Selector, and Headphone Volume knob.
14. Headphone Volume (front panel): Adjusts the output volume of the Headphone Output.
15. Instrument Inputs (front panel): Connect a guitar with a passive pickup or other high-
impedance signal to these inputs with a 1/4" (6.35 mm) TS cable. View the input signal levels
with the LED Meters.
Note: Using an Instrument Input will mute the Combo Input on the corresponding channel.
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