Connection With The Mains; Operation - Omnitronic AS-470 Bedienungsanleitung

7.4 Connection with the mains

Finally, use the supplied power cable to connect the amplifier to the mains (230 V AC, 50 Hz ~). The unit can
also be operated with 115 V AC, 60 Hz ~. For this purpose, set the voltage selector switch to the position
115 V. The occupation of the connection cables is as follows:
Cable Pin
Brown Live
Blue Neutral
Yellow/Green Earth
The earth has to be connected! If the device will be directly connected with the local power supply network, a
disconnection switch with a minimum opening of 3 mm at every pole has to be included in the permanent
electrical installation. The device must only be connected with an electric installation carried out in
compliance with the IEC standards. The electric installation must be equipped with a Residual Current
Device (RCD) with a maximum fault current of 30 mA.

8. OPERATION

1. To prevent loud switching noise, first switch on all other signal sources connected.
2. Prior to switching on, turn all level controls of the input channels to the left stop position to avoid a high
volume at the beginning. Then switch on the subwoofer with the power switch. The power indicator lights
up. The protection indication also lights up for a few seconds until the speaker outputs are ready for
operation.
3. Adjust the desired volume with the level controls for the signal sources. In case of overload, the CLIP
indicator lights up. In this case, reduce the volume correspondingly.
4. Adjust the desired volume for the subwoofer with the control SUB LEVEL.
5. With the control BALANCE, the stereo balance for the top speakers can be adjusted.
6. When operating the speaker system, please make sure that the loudspeakers always sound well. When
distortions can be heard, either the amplifier or the loudspeakers are overloaded. Overloads can quickly
lead to amplifier or speaker damage. In order to avoid damage, please reduce the volume immediately
when distortions can be heard. Always check the sound pressure level with a meter in order to keep to
the threshold.
7. After operation, set all level controls to the left stop position, then switch off the unit with the power
switch. The power indicator extinguishes.
International
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42/44 00021910.DOC, Version 1.2