Sennheiser HMDC 27 | Dynamic Closed Broadcast Headset with II-X3K1 Cable Connection

The Sennheiser HMDC 27 Dynamic Closed Broadcast Headset with II-X3K1 Cable Connection is the pinnacle of audio engineering, designed specifically for broadcast commentators and audio engineers who demand the highest level of sound quality and wearing comfort. This top-of-the-line model is equipped with NoiseGard, an active noise reduction technology, which ensures that you can perform optimally even in the loudest environments by reducing noise levels by an additional 15dB. Not only does this enhance intelligibility, but it also protects the user’s hearing and helps prevent stress and fatigue caused by excessive noise.

One of the standout features of the HMDC 27 is its innovative design that prioritizes user comfort. The headset boasts a lightweight circumaural design, with a unique two-piece headband that eliminates pressure on the sensitive fontanelle. For those who prefer a more traditional setup, a wide headband padding is included to convert the two-piece headband into a single compact piece. The HMDC 27 is also extremely versatile, offering a modular concept with different cables and boom arms to provide the utmost flexibility. The microphone can be worn on either side (right or left), and cables from the cable 26-II series are fully compatible.

Key Features

• Active noise compensation (NoiseGard) 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 two-piece headband (no pressure on the sensitive fontanelle)
• Accurate and linear sound reproduction for demanding monitoring
• Dynamic Microphone with strong and powerful sound patterns, ensuring high broadcast quality even in noisy environments
• ActiveGard (on/off switch) to protect hearing against noise peaks > 110dB
• Modular concept with various cables and boom arms for flexibility
• Compatible with cables from the cable 26-II series
• Swiveling ear cap for single-sided listening
• Microphone can be worn on either the right or left side
• Wide headband padding included to convert to a single compact headband

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

Package Contents

• Sennheiser HMDC 27 Broadcast Headset
• II-X3K1 Cable Connection
• Wide headband padding
• User Manual