Sennheiser HD400 - English

112
Contents
Safety tips ....................................................................................................113
Headset features ..............................................................................................114
Product variants........................................................................................................................ 115
Delivery includes ..............................................................................................118
Recommended accessories ...............................................................................119
Connecting the headsets..................................................................................120
Connecting cables for headsets................................................................................................ 120
Powering options ..................................................................................................................... 122
Preparing the headsets for use .........................................................................128
Adjusting the headband ........................................................................................................... 128
Positioning the microphone...................................................................................................... 129
Additional information for helicopter use of the HMEC 322 headset....................................... 131
Using the headsets...........................................................................................132
Turning NoiseGard™ on/off ..................................................................................................... 132
Mono/Stereo selection (except HMEC 305, HMEC 305-C, HMEC 322 and HMDC 322)........... 132
Adjusting the volume ............................................................................................................... 132
Adjusting the microphone gain ................................................................................................ 133
Attaching the cable clip............................................................................................................ 133
Folding up the headphones...................................................................................................... 133
Spare parts.......................................................................................................134
In case of difficulty ...........................................................................................136
Valuable information on NoiseGard™ ..............................................................138
The NoiseGard™ principle........................................................................................................ 138
Connector assignment ............................................................................................................. 141
Technical data ..................................................................................................142