Sennheiser HMEC 400 User Manuals

Table of 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