Sennheiser HMDC 27

LET´S SET BROADCAST-STANDARD TO A HIGHER LEVEL! The HMDC 27 is a closed, circumaural broadcast headset with active noise reduction. It is an ideal choice for commentator and camera work/ Backstage in very loud environments. For ease of operation, the active noise reduction does not require batteries but is powered via the P48 power supply from the broadcast desk.

The new 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 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 26series 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.

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_EN 61938)
• Highest wearing comfort due to the lightweight circumaural design and the splitted headband (no pressure on the sensitive fontanelle)
• 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 hand side
• Wide headband padding is included that converts the two-piece headband into a compact single piece

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 @ 1 kHz
• ActiveGard®: 110 dB SPL @ 1 kHz
• Distortion: < 0.1% @ 1 kHz, 100 dB SPL
• Transducer principle (headphones): dynamic, closed
• Weight w/o cable: approx. 240 g
• What's in the Box: 
  • 1 HMDC 27
  • 1 large headband padding
  • 1 wind and pop screen
  • 1 cable clip
  • 1 QuickGuide
  • 1 SafetyGuide
  • Cable Sold Separately