Sennheiser HD400 Instructions For Use Manual page 38

Contents
112
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