Proel M822USB - Manual (Page 18)

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tape or an A/D converter connected to a Personal Computer.
40. USB/2TRK OUT level control
It adjust the level of signal sent to the 2TRK OUTPUT and to the USB port. This control is independent from the MAIN
MIX fader control.
41. 2 TRK OUT PEAK detector
If the peak LED fl ashes mean that the signal is too high, near to the clipping the output stage. In this case, reduce the
level of the USB/2TRK OUT level control.
42. MIX - AUX 1-2 switch
This switch selects which signal is sent to the 2TRK OUT and to the USB port. Choosing the MAIN MIX signal you can
record a whole mix session such as a live performance. Choosing AUX 1-2 you can record ll two diff erent instruments
in two diff erent tracks of your DAW recording so ware, rou ng them thru AUX 1 and AUX 2 respec vely and using the
MAIN MIX for monitoring.
43. USB PORT socket
It routes the 2TRK OUT and the 2TRK IN through the USB port in crystal-clean, 16-bit, 44.1 kHz stereo digital audio. Use
the M822USB as a high-quality soundcard for recording and playback with Windows and Macintosh computers.
VERY IMPORTANT INFORMATIONS:
- The M822USB internal USB soundcard needs a personal computer with a USB 2.0 port and a Windows (XP or later) or
Mac OSX (10.3 or later) Opera ng Systems.
- The internal USB soundcard DOESN'T REQUIRE A DEDICATE SOFTWARE DRIVER to work with Windows or Mac OSX.
- For in/out signal rou ng inside the computer and the DAW so ware refer to the documenta on included with the
computer and DAW so ware.
- Tipically, a er you have connected the USB cable and powered on the mixer, the M822USB soundcard is visible from
the computer and DAW so ware as: "USB Audio CODEC" (or with a similar name, depending on the OS version).
44. ALT3-4 FADER level control
The ALT3-4 FADER controls the output level of the ALT3-4 bus signal just before its outputs or, if TO MIX (46) switch is
down, just before it is re-routed on MAIN MIX bus.
45. ALT3-4 L & R jack output
These JACK connectors provide an unbalanced line-level signal from the ALT3-4 stereo bus signal overall controlled by
the ALT3-4 FADER level control.
46. TO MIX switch
This switch assigns the ALT3-4 bus to the MAIN MIX bus. As explained earlier, pushing this switch you can use the ALT3-4
as a sub mix group, enabling you to control the level of several channels with one knob.
IMPORTANT: if you assign ALT3-4 to MAIN MIX you can no longer use the MUTE/ALT3-4 switch to mute a channel.
47. MAIN MIX L & R xlr and jack output (balanced)
These XLR and jack connectors provide a balanced line-level signal that represents the fully mixed stereo signal
controlled by the MAIN MIX fader. Connect these to the inputs of your power amplifi er, powered speaker or processors
(equalizers, mul -band compressors and so on).
48. MAIN MIX FADER level control
The MAIN MIX FADER controls the output level just before the MAIN MIX outputs. When the fader is fully down the
MAIN MIX is off , the “0” marking indicates a +4 dBu nominal output level. Typically this fader is set near the “0” label
and le alone, but it can be used for song fadeouts or quick system-wide mutes.
NOTE: the MAIN OUT is a true balanced output that can send the signal on a balanced line with or without a phantom
power ac ve. So the M822USB mixer can also be used as a combina on mixer + DI box for sending the signals to a
bigger main mixer console.
49. SOLO MODE switch
Allows to select if the listening and the visualiza on of the channels selected with the SOLO bu ons are PRE FADER
(PFL) or POST FADER (AFL).
- PFL: PRE-FADER LEVEL, the input signal, already controlled by the channel EQ, is shown on the LED METERS and sent
to the C.ROOM/PHONES outputs. The PFL mode has to be used for se ng the right level of the input signal (usually
around 0 dB) and to avoid input satura on and distor on.
- AFL: AFTER-FADER LEVEL, the input signal, already controlled by the channel EQ and by the channel fader, is shown
on the LED METERS and sent to the C.ROOM/PHONES outputs. The AFL mode can be used to listen the signal sent to
the MAIN MIX or ALT 3-4.
50. MIX to C.ROOM switch
Push this switch to send the MIX bus signal to C.ROOM and PHONES outputs.