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Contents Safety tips ..................................................................................................................................................... 3
Headset features ........................................................................................................................................ 4
Product variants .......................................................................................................................................... 5
Delivery includes ......................................................................................................................................... 8
Recommended accessories ..................................................................................................................... 9
Connecting the headsets ....................................................................................................................... 10
Connecting cables for headsets .......................................................................................................... 10
Connector assignment .......................................................................................................................... 12
Powering options .................................................................................................................................. 13
Preparing the headsets for use ........................................................................................................... 19
Adjusting the headband ...................................................................................................................... 19
Positioning the microphone ................................................................................................................ 20
Using the headsets .................................................................................................................................. 22
Turning NoiseGard™ on/off ................................................................................................................. 22
Mono/Stereo selection (except HMEC 355, HMEC 355-C, HMEC 372 and HMDC 372) ............ 22
Adjusting the volume ........................................................................................................................... 22
Attaching the cable clip ....................................................................................................................... 23
Folding up the headphones ................................................................................................................. 23
Spare parts .................................................................................................................................................. 24
Valuable information on NoiseGard™ ............................................................................................... 26
In case of difficulty ................................................................................................................................... 28
Technical data ............................................................................................................................................ 30