Sennheiser HMDC 27 Professional Broadcast Headset (HMDC27)

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.

FEATURES

• Swiveling ear cap for single sided listening
• Cables of the cable 26-II series are compatible
• Microphone can be worn either on right or left hand side
• Accurate and linear sound reproduction for very demanding monitoring
• Modular concept of different cables and boom arms to offer highest flexibility
• ActiveGard© (on/off switch) for protected hearing against noise peaks > 110dB
• Highest wearing comfort due to the lightweight circumaural design and the splitted headband (no pressure on the sensitive fontanelle)
• 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
• 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)

SPECIFICATIONS

• Impedance : 64 ohms
• Microphone : BMD 434
• Ear coupling : circumaural
• Contact pressure: approx. 3.3 N
• Pick-up pattern : Hyper-cardioid
• Weight w/o cable : approx. 240 g
  
• ActiveGard® : 110 dB SPL @ 1 kHz
• Distortion : < 0.1% @ 1 kHz, 100 dB SPL
• Microphone sensitivity: 0.5 mV/Pa @ 1 kHz
• Transducer principle (Microphone) : dynamic
• ActiveGard™ Limiter on: 110 dB SPL @ 1 kHz
• Frequency response (Headphones) : 8 Hz – 18 kHz
• Frequency response (Microphone) : 40 Hz – 18 kHz
• Transducer principle (headphones) : dynamic, closed
• Maximum sound pressure level (passive) : 128 dB SPL @ 1 kHz
• Max. sound pressure level : ActiveGard™ Limiter off: 128 dB SPL @ 1 kHz