Sennheiser HMDC 27
Broadcast Headset with Noisegard

OUR PART #  HMDC27


The Sennheiser HMD 27-series invites the Broadcast Commentators and Audio Engineers to experience the highest level of wearing comfort. The top-of-the-line model is the Sennheiser HMDC 27, which features NoiseGard™ (active noise reduction) to perform well in very loud environments. By actively reducing the noise level by additional 15dB this headset increases intelligibility while at the same time protecting the user’s hearing and avoiding stress and fatigue due to noise. NoiseGard™ does not require the usual batteries but is conveniently powered via the microphone power supply from the broadcast desk or intercom system. (Phantom powered P48). The headset is similar to the HMS 26 series equipped with the automatically opening two-piece headband, hence no pressure on the sensitive fontanelle. For those users who still prefer a conventional headband, a wide headband padding is included that converts the two-piece headband into a compact single piece.

Sennheiser HMDC 27 Includes:

  • (1) HMDC 27
  • (1) with connection cable II-X3K1
  • (1) large headband padding
  • (1) wind and pop screen
  • (1) cable clip
  • (1) QuickGuide
  • (1) SafetyGuide

Sennheiser HMDC 27 Features:

  • Active noise compensation (NoiseGard™) additionally reduces noise by up to 15 dB. No batteries required: Power supply via microphone bias voltage from the commentator’s unit (P12-P48 as per DIN_EN61938)
  • Highest wearing comfort due to the lightweight circumaural design and the splitted headband (no pressure on the sensitivefontanelle)
  • Accurate and linear sound reproduction for very demanding monitoring
  • Dynamic Microphone, which stands out due to a strong and powerful sound pattern for an audio transmission in highest broadcast quality even in noisy environments
  • ActiveGard© (on/off switch) for protected hearing against noise peaks > 110dB
  • Modular concept of different cables and boom arms to offer highest flexibility
  • Cables of the cable 26-II series are compatible
  • Swiveling ear cap for single sided listening
  • Microphone can be worn either on right or left handside
  • Wide headband padding is included that converts the two-piece headband into a compact single piece

Sennheiser HMDC 27 Specifications:

  • Impedance: 64 ohms
  • Frequency response (microphone): 40 Hz – 18 kHz
  • Transducer principle (Microphone): dynamic
  • Frequency response (headphones): 8 Hz – 18 kHz
  • Microphone: BMD 434
  • Max. sound pressure level
    • ActiveGard™ Limiter off: 128 dB SPL @ 1 kHz
    • ActiveGard™ Limiter on: 110 dB SPL @ 1 kHz
  • Contact pressure: approx. 3.3 N
  • Ear coupling: circumaural
  • Pick-up pattern: Hyper-cardioid
  • Microphone sensitivity: 0.5 mV/Pa @ 1 kHz
  • Maximum sound pressure level (passive): 128 dB SPL @ 1kHz
  • ActiveGard™: 110 dB SPL @ 1 kHz
  • Distortion: < 0.1% @ 1 kHz, 100 dB SPL
  • Transducer principle (headphones): dynamic, closed
  • Weight without cable: approx. 240 g

Sennheiser HMDC 27
Broadcast Headset with Noisegard

OUR PART #  HMDC27

Product Information:

The Sennheiser HMD 27-series invites the Broadcast Commentators and Audio Engineers to experience the highest level of wearing comfort. The top-of-the-line model is the Sennheiser HMDC 27, which features NoiseGard™ (active noise reduction) to perform well in very loud environments. By actively reducing the noise level by additional 15dB this headset increases intelligibility while at the same time protecting the user’s hearing and avoiding stress and fatigue due to noise. NoiseGard™ does not require the usual batteries but is conveniently powered via the microphone power supply from the broadcast desk or intercom system. (Phantom powered P48). The headset is similar to the HMS 26 series equipped with the automatically opening two-piece headband, hence no pressure on the sensitive fontanelle. For those users who still prefer a conventional headband, a wide headband padding is included that converts the two-piece headband into a compact single piece.

Sennheiser HMDC 27 Includes:

  • (1) HMDC 27
  • (1) with connection cable II-X3K1
  • (1) large headband padding
  • (1) wind and pop screen
  • (1) cable clip
  • (1) QuickGuide
  • (1) SafetyGuide

Sennheiser HMDC 27 Features:

  • Active noise compensation (NoiseGard™) additionally reduces noise by up to 15 dB. No batteries required: Power supply via microphone bias voltage from the commentator’s unit (P12-P48 as per DIN_EN61938)
  • Highest wearing comfort due to the lightweight circumaural design and the splitted headband (no pressure on the sensitivefontanelle)
  • Accurate and linear sound reproduction for very demanding monitoring
  • Dynamic Microphone, which stands out due to a strong and powerful sound pattern for an audio transmission in highest broadcast quality even in noisy environments
  • ActiveGard© (on/off switch) for protected hearing against noise peaks > 110dB
  • Modular concept of different cables and boom arms to offer highest flexibility
  • Cables of the cable 26-II series are compatible
  • Swiveling ear cap for single sided listening
  • Microphone can be worn either on right or left handside
  • Wide headband padding is included that converts the two-piece headband into a compact single piece

Sennheiser HMDC 27 Specifications:

  • Impedance: 64 ohms
  • Frequency response (microphone): 40 Hz – 18 kHz
  • Transducer principle (Microphone): dynamic
  • Frequency response (headphones): 8 Hz – 18 kHz
  • Microphone: BMD 434
  • Max. sound pressure level
    • ActiveGard™ Limiter off: 128 dB SPL @ 1 kHz
    • ActiveGard™ Limiter on: 110 dB SPL @ 1 kHz
  • Contact pressure: approx. 3.3 N
  • Ear coupling: circumaural
  • Pick-up pattern: Hyper-cardioid
  • Microphone sensitivity: 0.5 mV/Pa @ 1 kHz
  • Maximum sound pressure level (passive): 128 dB SPL @ 1kHz
  • ActiveGard™: 110 dB SPL @ 1 kHz
  • Distortion: < 0.1% @ 1 kHz, 100 dB SPL
  • Transducer principle (headphones): dynamic, closed
  • Weight without cable: approx. 240 g
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