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HEADPHONES LEVEL
Volume controller for the headphone output (N 82). Use headphones with a minimum impedance of 30 ohms and make sure that the volume
stays at a comfortable level, in order to avoid hearing damage caused by loud noise. Before you connect headphones, set the volume controller to
minimum.
GROUP 1/2
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Volume controller for the line outputs GROUP OUT 1 and 2 (N 11) and for the adding the group signal GROUP 1/2 to the MAIN MIX sum channel,
when the switch GROUP 1/2 L-R is pressed down (N 105). Before you turn on the power of a connected PA system, set the volume controller to
minimum.
GROUP 1/2 L-R
105
Volume controller for routing the group signal GROUP 1/2 to the MAIN MIX sum channel (down position).
GROUP 3/4
106
Volume controller for the line outputs GROUP OUT 3 and 4 (N 11) and for adding the group signal GROUP 3/4 to the MAIN MIX sum channel, when
the switch GROUP 3/4 L-R is pressed down (N 107). Before you turn on the power of a connected PA system, set the volume controller to minimum.
GROUP 3/4 L-R
107
Volume controller for routing the group signal GROUP 3/4 to the MAIN MIX sum channel (down position).
GROUP 1/2 MUTE
108
Put the switch in the down position to mute the group signal GROUP 1/2. The MUTE LED of the selected channel then lights up. When disabling the
mute function, the MUTE LED goes out.
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GROUP 3/4 MUTE
Put the switch in the down position to mute the group signal GROUP 3/4. The MUTE LED of the selected channel then lights up. When disabling the
mute function, the MUTE LED goes out.
MAIN MIX
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Volume controller for the stereo line outputs MAIN MIX OUTPUT N 5 and N 6. Push the Fader button upwards to increase the volume, and
downwards to decrease it. Before you turn on the power of the connected PA system, set the volume controller to minimum.
MAIN MIX MUTE
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Put the switch in the down position to mute the MAIN MIX sum channel. The MUTE LED of the selected channel then lights up. When disabling the
mute function, the MUTE LED goes out.
INSTALLATION OF THE USB INTERFACE
Installation with Windows operating systems (Windows XP® or newer):
No driver downloads or drivers on external storage media are required for installation. Use the included USB cable to connect the mixer to one of
the USB 2.0 ports of your computer. In most cases, the software is installed automatically. It may be necessary to reboot the computer. In some
cases, a window may appear (device software installation), in which you are prompted to complete installation of the USB audio CODEC software.
Follow this prompt. Now the mixer will appear under "Audio, Video, and Game Controllers" in the Device Manager of your operating system as "USB
Audio CODEC" or "USB Audio Device" and is operational. Depending on the recording software used, it may be necessary to select the mixer in the
"Sound" control panel ("System control "→"Hardware and Sound" →"Sound") as recording and playback device.
Installation with Apple operating systems (Mac OS X® 10.5 or newer):
No driver downloads or drivers on external storage media are required for installation. Use the included USB cable to connect the mixer to one of the
USB 2.0 ports of your computer. The software is installed automatically. Depending on the recording software used, it may be necessary to select
the mixer (USB Audio CODEC) as an input and output device in the "Sound" control panel ("System settings"→"Sound").
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