3. OPERATING DETERMINATIONS
This device is a professional audio-mixer for mixing audio-signals from different music-sources with one
another. This product is allowed to be operated with an alternating current of 115/230 V, 50/60 Hz and was
designed for indoor use only.
Do not shake the device. Avoid brute force when installing or operating the device.
When choosing the installation-spot, please make sure that the device is not exposed to extreme heat,
moisture or dust. There should not be any cables lying around. You endanger your own and the safety of
others!
Do not operate the device in extremely hot (more than 30° C) or extremely cold (less than 5° C)
surroundings. Keep away from direct insulation (particularly in cars) and heaters.
Operate the device only after having familiarized with its functions. Do not permit operation by persons not
qualified for operating the device. Most damages are the result of unprofessional operation!
Never use spray cleaners in order to clean the faders!
Never use solvents or aggressive detergents in order to clean the device! Rather use a soft and damp cloth.
Please use the original packaging if the device is to be transported.
Please consider that unauthorized modifications on the device are forbidden due to safety reasons!
Never remove the serial barcode from the device as this would make the guarantee void.
If this device will be operated in any way different to the one described in this manual, the product may suffer
damages and the guarantee becomes void. Furthermore, any other operation may lead to dangers like short-
circuit, burns, electric shock, etc.
4. CONNECTIONS
• Make sure that the power switch is set to OFF. Before you connect the devices, all units have to be
switched off and the master fader is set to 0.
• Make sure that the available voltage is not higher than stated on the voltage selector before you connect
the power cord.
• In order to obtain highest sound quality, only use high-quality cables for connecting the devices. Make sure
that the cables are properly fixed.
• You can connect up to 3 amplifiers to the CM-742. The output signal of the Master 1-signal can be adjusted
via the Master 1-fader and the balance-control. The output signal of the Master 2-signal can be adjusted via
the Master 2-fader. The output-signal of the Booth-signal can be adjusted via the Booth-control.
• The Master 1-output can either be connected via the RCA-sockets or the balanced XLR mounting-plugs.
Due to the lower interference problems, we recommend to use the XLR mounting-plugs.
Occupation balanced XLR mounting-plug:
• The Master 2-output can be connected via the RCA-sockets. Make sure that the sockets are set properly (L
& R).
Balanced XLR mounting-plug:
1: Ground
2: In Phase (+)
3: Out of Phase (-)
2
1
3
17