User's Manual

english

4. General Instructions for all Transmitters

4.1 Battery Change

• Switch the transmitter off before changing the battery.

• If you do not use the transmitter for several weeks or months, please remove the battery

as it can leak after some time and damage parts of the transmitter. Even “leak proof” may

leak after some time. Damage caused by leaking batteries is not covered under warranty.

• Clean the battery contacts from time to time by using a soft cloth moistened with spirits

or alcohol.

• Please do not throw used battery packs away with your household rubbish, but take them

to your local collection points.

• When using rechargeable batteries use beyerdynamic chargers.

4.2 Before the Soundcheck

1. Check the transmitter battery and replace or recharge it if necessary. Use fresh alkaline

batteries only.

2. When the transmitter is switched off and immediately switched on again, it is possible

that the transmitter remains switched off. The cause is the function that allows to switch

the transmitter on / off silently. Should this problem occur during operation, the battery

might have contact problems. After switching off the transmitter you should wait at least

1 second, until you switch the transmitter on again.

3. Check the performance area for dropouts. If you find any dropouts, try to eliminate

them by repositioning the antennae or the receiver.

4. The receiving antennas should be placed so that the distance between receiving

antennae and transmitter is at least 3 m. If necessary, use remote antennae (AT 70 A/B).

4.3 Positioning of Transmitters if Interference occurs

Put all transmitters in their position and switch them on. Switch each transmitter off

one at a time and check the receiver for interference in the corresponding channel.

The interference is possibly eliminated by changing the squelch (refer also to chapter

1.4.5 “Squelch”.

When using multi-channel-systems, please contact beyerdynamic. Interferences can also be

caused by DVB-T television transmitters in the neighbourhood.

4.4 What to Do to avoid Feedback

Feedback is caused by your microphone getting too close to a loudspeaker.

We recommend:

• Move away from the loudspeaker.

• Turn the microphone away from the loudspeaker.

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