User Manual

7
For connecting a mono unit to channel CH3/4, use the Left jack only: Then the mono signal is
internally sent to the right channel and the left channel.
2. The RCA jacks Aux can be used for connection of a stereo recording device.
Connect the replay output of the stereo recording device to the input AUX IN;
Connect the recording input of the recording device to the output AUX OUT; the output receives
the sum signal adjusted with the control MASTER MIX
However, the connections may also be used for other units with line signal level, e.g. a
reproducer like CD player or MP3 player may be connected to AUX IN or an amplifier to AUX
OUT.
3. Connect stereo headphones (impedance ≥8 OHM) to the ¼-inch jack MONITOR/PHONES.
4. The sum of the signals are adjusted with the control MAIN MIX, the audio is present at the
stereo output MAIN MIX OUT.
Here e.g. an amplifier or a second mixer may be connected. The ¼-inch jacks are unbalanced
5. For power supply, connect the power adapter provided to the jack 15VAC and to a mains
outlet (115VAC or 230VAC).
Note: If the mixer is not used for a long period of time, then disconnect the power adapter from
the socket. Even when the mixer is switched off, the power supply unit has a low power
consumption.
6. To switch on the mixer, set the POWER switch to position “ON”. The power indication POWER
ON lights up.
Operation with a computer
When operating the mixer with a computer, either use the audio software supplied with the
operating system or an audio software installed additionally. Various programs for audio
reproduction/ recording are available on the internet free of charge.
1. Boot up the computer and connect the USB jack to a USB port at the computer via the USB
cable provided. The USB interface of the mixer is recognized by the computer as an external
unit for audio input and audio output, depending on the operating system e.g. as “USB Audio
CODEC”. The required drivers (standard drivers of the operating system) are available on the
computer.
2. Note: If not all drivers required are available on the computer, install them, e.g. via the
original CD of the operating system. If necessary, restart the computer after installation.
3. Activate the audio program used and make the necessary adjustments for the audio
reproduction via the mixer or audio recording from the mixer.
If no audio recording or audio reproduction is possible, check in the system settings of the
computer if the USB interface has been selected for the audio input or audio output.
Hint: If the mixer is connected both to a computer and to any units which are earth ground mains
cables (e.g. amplifiers), ground loops may occur due to hum interference. To eliminate them, the
mixer can be connected to the respective unit via a ground isolator.