M-Audio M-TRACK PLUS Guide D'utilisation page 4

Features
Front Panel
2
1. Display: This display shows the signal level of the inputs. The edges of the display will
light up when M-Track Plus is powered on.
2. Inputs 1 and 2: Connect microphones, line-level devices, or guitars to these inputs with
an XLR or 1/4" (6.35 mm) TRS or TS cable. For microphones, use an XLR cable. For line-
level signals, use a 1/4" (6.35 mm) TRS cable. For instrument signals, use a 1/4" (6.35
mm) TS cable. View the input signal levels in the display.
3. +48V Switch: This switch activates and deactivates phantom power for Inputs 1 and 2.
When activated (lit), phantom power supplies +48V to the XLR mic inputs. Please note
that dynamic microphones and ribbon microphones do not require phantom power, while
most condenser microphones do. Consult your microphone's documentation to find out
whether it needs phantom power.
4. Input Gain: Adjusts the input's gain level. Set this knob so the corresponding level meter
in your DAW displays a "healthy" level during performance—but not so high that the
meter "clips" or peaks, causing distortion in the audio.
5. Instrument Selector: When the switch is in the Line position, the input will accept
microphone- or line-level signals. When this switch is in the Inst position, the input will
serve as a high-impedance input for connecting guitar or bass instruments.
6. Monitor Mix: Blends any amount of zero-latency signal from all your inputs (Direct) with
the output of your computer (USB).
This knob is useful during recording when dealing with the "buffer size" and "latency."
The computer takes a short amount of time to process the incoming audio before
sending it back out; this time is determined by the buffer size setting. Latency is the
resulting delay between the incoming sound (playing your instrument, singing, etc.) and
outgoing sound (when you hear it in the DAW). Higher buffer sizes result in higher latency.
If your computer is powerful enough, you may be able to set your buffer size low enough
such that you may never need direct monitoring. In this case, set the knob all the way to
the USB position to monitor only the audio output of your DAW.
In other cases, though, low buffer sizes can consume a lot of your computer's CPU and
cause audio glitches, so you may need to use a higher buffer setting, resulting in latency.
In this case, use a higher buffer size and turn the knob more towards the Direct position
to monitor your incoming signal without latency. When listening to the playback, turn it all
the way to the USB position.
7. Headphone Output: Connect 1/4" (6.35 mm) TRS headphones to this output. The mix
you hear from this output will be determined by the Monitor Mix knob.
8. Headphone Volume: Adjusts the output volume of the Headphone Output.
9. Monitor Level: Adjusts the output volume of Main Outputs L and R, which should be
connected to your powered monitors or amplifier system.
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