HME 46-3S

Article No. 502592


The HME 46-3Sは超軽量かつ快適な開放型ブームセットです。航空管制に最適です。ActiveGardを搭載し、音響バーストから管制官を保護いたします。


  • 超軽量

  • 特許取得の2ピース自動調整式ヘッドバンドと柔らかなイヤーパッドによる極上の付け心地

  • シングルサイド・リスニングを可能にするフリップアウェイ・ヘッドホン

  • 柔軟なマイクロホン・ブームにより、左右どちら側にも装着可能

  • ノイズ補償機能付きコンデンサー・マイクロホンが卓抜な音声伝送を保証

  • PTTと一緒に使用可能

  • ActiveGardが音響バーストからユーザーを保護

  • 付属ケーブルなし。 アクセサリー・リストに記載のさまざまな形状のケーブルの使用可


  • HME 46-3Sヘッドセット x 1
  • ケーブルクリップ x 1
  • ウインドおよびポップスクリーン x 1
  • ユーザーマニュアル x 1


  • black
  • 周波数特性
    100 - 12000 Hz
  • トランスデューサー原理(マイクロホン)
    Electret-microphone, noise-compensated - BKE 46
  • 周波数特性(ヘッドホン)
    20 - 14000 Hz
  • 特性 SPL
    92 dB SPL (1 kHz, 1 mW) / 83 dB SPL (1 kHz, 1 V)
  • 接点圧
    ~ 3 N
  • 接続ケーブル
    single-sided round cable, length 1.85 m, open ends
  • 型式
    dynamic, open
  • 重量
    w/o cable: ~ 110 g
  • 最小終端インピーダンス
    150 - 2200 Ω
  • 保管温度
    –55 °C à +70 °C
  • 動作環境
    –15 °C à +55 °C
  • 出力電圧
    800 mV -2dB at 114 dB SPL, 80 mV/PA (adjustable from 17 to 100 mV/Pa)
  • 動作電圧(スタンドアローン)
    8 - 16 VDC


  • What are NRR (Noise Reduction Ratings) for a headset?

    NRR (Noise Reduction Ratings) is a rating of the passive reduction of a headset and this is by a set standard (ANSI).

    However there are no present standards for measuring ANR (Active Noise Reduction). Each Manufacturer uses their own standards. Sennheiser uses the standards and results of an independent laboratory that is accredited by the National Institute of Standards and Technology. One should be very careful in assuming that all manufacturers use these results in a fair and unbiased way.

    HME 46-3S ( #502592 )
  • Which accessories come with my ATC/C3 headset purchase?

    Your purchase of a Sennheiser ATC/C3 headset will include a windscreen, clip, bag, and manufacturer certificates.

    HME 46-3S ( #502592 )
  • Why is it a good idea to have a mic gain adjustment on your microphone?

    The microphone gain adjustment on a microphone gives the technician the ability to make adjustments for minor anomalies that may occur. While the microphone may work fine often a small adjustment may make a big difference in the total performance of the microphone.

    HME 46-3S ( #502592 )
  • Active Noise Cancellation

    Active noise cancellation is the reduction of noise, particular in the low frequency range, by using active noise compensation electronic circuitry. Active noise cancellation is measured in decibels (dB).

    HME 46-3S ( #502592 )
  • Caliper Pressure (Contact Pressure)

    Caliper Pressure (sometimes referred to as Contact Pressure) is the amount of force applied to the sides of the head while wearing headphones. Caliper pressure is measured in Newton’s (N) and could range from 1.6 N (loose fit) to 10 N (snug fit).

    A tight coupling between the headphone and the ear is necessary in order to maximize passive attenuation however too much pressure can make the headphone uncomfortable to wear for long periods of time. 

    HME 46-3S ( #502592 )
  • Condenser Microphone (Electret Microphone)

    A CONDENSER or ELECTRET microphone is one that is based on an electrically charged diaphragm (or back plate) assembly which forms a sound-sensitive capacitor.

    On a condenser or electret microphone a very thin metal or metal coated-plastic diaphragm is mounted just in front of a ridged metal or metal-coated-ceramic back plate. This assembly is known as a capacitor (condenser) which has the ability to store a charge or voltage. When the element is charged an electrical field is created between the diaphragm and the back plate proportional to the spacing between them. Sound waves vibrate the diaphragm and it is the vibration of this spacing due to the motion of the diaphragm relative to the back plate that produces the electrical signal corresponding to the sound picked up by a condenser microphone. 

    The construction of a condenser microphone must include some provision for maintaining the electrical charge or polarizing voltage.

    NOTE: An Electret condenser microphone has a permanent charge maintained by a special material (Electret) deposited on the back plate or on the diaphragm.

    HME 46-3S ( #502592 )
  • Diaphragm

    The diaphragm is a  thin membrane in a microphone which moves in response to sound waves.

    HME 46-3S ( #502592 )
  • Gain

    Gain is the amount of increase in audio signal strength. Gain is often expressed in decibels (dB).

    HME 46-3S ( #502592 )
  • Microphone Gain Control

    Microphone Gain Control is a  level control on a microphone preamplifier that sets gain and is used to prevent overload of a preamplifier.

    HME 46-3S ( #502592 )
  • Output Voltage

    Output Voltage is similar to sensitivity except it takes into account additional electronics used to amplify the signal. This is typically measured over a range of frequencies and will include the term + or - 3 dB. Rather than using 1 Pascal this specification may also include the input level used such as 114 dB at a distance of 6 mm.

    HME 46-3S ( #502592 )
  • Passive Attenuation

    Passive attenuation is the ability of the headset to reduce the ambient noise level by merely wearing the headset without the aid of any electronic assistance (ie: active noise compensation circuitry). Passive attenuation is measured in decibels (dB).

    HME 46-3S ( #502592 )
  • Pre-Amp

    A Pre-Amp is a low-noise amplifier designed to take a low-level signal (such as that from a microphone) and bring it up to normal line level.

    HME 46-3S ( #502592 )
  • Sensitivity

    Sensitivity  is a measurement of how much voltage is produced by a microphone for a specific measured input (1 Pascal). Sensitivity is measured in micro volts (uV) or millivolts (mV).

    A typical rating for a dynamic microphone would be 1 mV. A typical rating for an Electret microphone would be 3.5 to 10 mV A typical rating for an Electret with amplifier would be 170 mV. 

    The higher the number the stronger the signal produced by the microphone.

    HME 46-3S ( #502592 )
  • XLR-3 Connector

    The XLR-3 Connector is a single connector that can be used in place of the PJ055 headphone and the PJ068 microphone plugs on some Sennheiser headsets.

    Pin 5 of this plug can also be used to provide aircraft power for the NoiseGard power supply on some Sennheiser headsets.

    HME 46-3S ( #502592 )
  • XLR-5 Connector

    The XLR-5 connector is a single connector that can be used in place of the PJ055 headphone and the PJ068 microphone plugs on some Sennheiser headsets.

    Pin 5 of this plug can also be used to provide aircraft power for the NoiseGard power supply on some Sennheiser headsets.

    HME 46-3S ( #502592 )