Sennheiser HMD 46-3-II
Sennheiser HMD 46-3-II

Sennheiser HMD 46-3-II

Sennheiser HMD 46-3-II
Item# HMD-46-3-II

Product Description


HMD 46-3-II

Sennheiser’s HMD 46-II Series are lightweight headsets for air traffic controllers and C3 operators requiring excellent sound performance and long-term wearing comfort.


Sennheiser’s HMD 46-II Series of very lightweight, extremely comfortable headsets are designed specifically for all air traffic control communication and C3 (Command, Control & Communications) operators requiring excellent sound and long-term wearing comfort. A noise-cancelling microphone delivers optimum speech clarity for reduced “call-back/read-back” events. The headset can be operated in two channel mode. Soft acoustic foam ear pads and patented two-piece automatic headband deliver first class comfort with a perfect, secure fit. A flip away headphone allows for single-sided listening and a reinforced flexible microphone boom allows for left or right sided use. The headsets feature a single sided cable which is easy to exchange. Sennheiser ActiveGard® technology protects users hearing against acoustic injury caused by a sudden sound burst on the line, without interrupting communications - an added safety feature that differs from traditional acoustic shock clipping circuitry. The headset features a dynamic microphone and the series consists of two variants: HMD 46-3-II (double-sided including ActiveGard®) and HMD 46-31-II (double-sided without ActiveGard®)


  • Sennheiser Voice Clarity for accurate communication, provides excellent voice transmission and reception

  • Perfect speech transmission Noise-cancelling microphone filters out ambient noise for optimum speech clarity to reduce “call-back/read-back” events

  • Fits every application with a choice of electret/dynamic microphone, and single sided or dual sided earcup model

  • Two channel stereo application for multi-channel communication

  • Sound protection from acoustic injury caused by sudden sound bursts on the line with Sennheiser ActiveGard® technology

What's in the box?

  • Headset HMD 46
  • Cable clip
  • Wind and pop screen
  • Safety Guide
  • Quick Guide

Technical Data

  • Color
  • Impedance
  • Frequency response (Microphone)
    100 - 12,000 Hz
    • Transducer principle (Microphone)
      Dynamic, noise cancelling, uni-directional
    • Frequency response (Headphones)
      20 - 14,000 Hz
    • Microphone
      Load resistance 150 - 2,200 Ohm
    • THD, total harmonic distortion
      < 1 % at 95 dB SPL (300 - 3,000 Hz)
    • Contact pressure
      2.7 N
    • Ear coupling
      Supra-aural (on ear)
    • Weight
      150 g /5.29 oz
    • Storage temperature
      -55 °C - +70 °C
    • Operating temperature
      -15 °C - +55 °C
    • SPL for peak deviation
      95 dB (1 kHz, 1 mW)

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