00070193.DOC, Version 1.0
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5. INSTALLATION
5.1 Rack installation
Install the unit on a plane surface or in your rack. For 19" (483 mm) rack installation, 4 units are required.
When mounting the unit into the rack, please make sure that there is enough space around the device so
that the heated air can be passed on. Steady overheating will damage your device. You can fix the unit with
four screws M6 in the rack.
5.2 Connections
Switch off the mixer prior to connecting any units or to changing any existing connections.
1 Connect the stereo audio sources to the corresponding RCA jacks of channels 1-4 (white jack = LEFT;
red jack = RIGHT):
• Connect units with line level output (e.g. CD player) to the jacks LINE.
• Connect turntables with magnetic system to the jacks PHONO.
• If your turntable is equipped with a separate ground lead, connect it to the clamping screws GND.
2 You can connect a DJ microphone (balanced or unbalanced) optionally via an XLR plug or a 6.3 mm
plug to microphone input DJ MIC.
3 Connect the amplifier(s) to the balanced XLR output and/or to the unbalanced RCA output.
4 The USB port allows transmission of digital audio signals in both directions between the mixer and the
computer, even at the same time. Connect the USB port to your computer. As soon as the mixer is
connected to a computer, it will be recognized as a standard USB audio device and the required drivers
are installed.
• Adjust the computer’s operating system: For data transmission from the mixer to the computer the USB
interface of the mixer must be selected as the recording device. For data transmission from the
computer to the mixer the USB interface of the mixer must be selected as the playback device.
• Select the mixer within your music software.
Tip
If the mixer is connected to both a computer and to a unit grounded via the mains cable (e.g. amplifier),
noise interference may occur due to ground loops. To eliminate this interference, a ground isolator (e. g.
OMNITRONIC LH-082) may be used to connect the mixer to the unit.
5 For analog sound recordings, connect the recording unit to the output REC. The recording level is
independent of the position of the master control and the output control ZONE.
6 The input channels can be monitored via stereo headphones. Connect the headphones to the 6.3 mm
jack PHONES on the front panel.
7 Connect the power cable to the AC input of the mixer and the mains plug to a mains socket.
6. OPERATION
Prior to switching on, set the master control to zero to avoid damage to the hearing by a volume which is too
high when switching on. Switch on the unit with the power switch. The power indicator on the front panel
lights up. Switch on the connected units. After operation, switch off the mixer with the power switch.
6.1 Basic adjustment of the input channels
1
First set all gain controls, equalizer controls and the crossfader to mid-position. Set the two assignment
selectors X-FADER ASSIGN to the position "OFF".
2 Use the input selector to select the input to which the audio source is connected.
3 Feed an audio signal (test signal or music piece) to the channel and advance the channel fader to
approx. 2/3 of its maximum. Set all other channel faders to zero.
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