- Main Features:
- Switchable hearing protection (ActiveGard™)
- Highest resolution due to accurate, linear sound reproduction, optimized for speech intelligibility
- Microphone can be worn either on right or left hand side
- Comfortable padding design allows for extended use in long wearing sessions
- Superior ambient noise attenuation in loud environments due to closed passive earcup construction
- Foldable earcup design
- Maximum wearing comfort even during extended sessions
- High-resolution and distortion-free monitoring sound
- Outstanding speech intelligibility thanks to a supercardioid, dynamic microphone
- Switchable Peak Level Protection protects against volumes over 110 dB(A)
- Efficient filtering of ambient noise and structure borne noise
- Customized design of earpads possible
- Includes Terminated 1/4in, XLR modular cable
- Reduction of Structure-Born Noise
- Vibrations transferred along the cable are minimized by an innovative mechanical solution (short coiled section) of the cables of our modular cable system (Cable 26-II series).
- Nameplates for Customization
- The HMD 300 PRO Series headsets can be customized with a company logo or user name.
- Minimum order quantity for customization is 10 pcs; contact your Area Sales Manager for a price quote.
- ActiveGard
- Patented sound compression system consisting of a sophisticated electrical circuit incorporated into analogue headsets.
- Utilizes a compression technology to remove the energy from an excessive incoming signal transmitted through the communication system, leaving the signal free of distortion.
- Can be compared to an automatic and fast-working “intelligent” volume control. If an incoming signal rises to a level that is harmful to your hearing, it is instantly “turned down” to a lower, more comfortable level.
- When the incoming signal returns to safe levels, ActiveGard™ reverts to its stand-by surveillance mode and volume is restored to its original level.
- Modular Cabling System
- Utilizes the modular cabling system from the HMD 26-II series and HMD 27 PRO series headsets.
- The headset cables can accommodate multipin connectors or independent connectors for mic and headphone.
- Cable options include straight cables with a coiled segment that eliminates structure born noise, and a fully coiled cable.
- Two new cables will be launched with HMD 300 PRO series. Refer to the Cables and Accessories page for details.
- Specifications:
- Acoustic principle dynamic, closed
- Ear coupling circumaural
- Frequency response 60 – 25,000 Hz
- Impedance 64 Ω
- Power rating 500 mW
- Sensitivity 108 ±3 dB SPL / 1 Vrms / 1 kHz Lmiter off
- Max. SPL ActiveGard off 123 dB SPL @ 1 kHz
- Max. SPL ActiveGard on 110 dB SPL @ 1 kHz
- Ambient noise attenuation ≤32 dB
- Distortion <0.1% @ 1 kHz, 94 dB SPL
- Contact pressure approx. 6.0 N
- Cable length approx. 1.55 m
- Microphone (BMD 404)
- Type noise cancelling
- Transducer principle dynamic Directivity hyper-cardioide
- Impedance 300 Ω
- Sensitivity 0.4 mV/Pa @ 1 kHz
- Near field frequency range 80 Hz – 16,000 Hz
- Temp–15 °C to +55 °C (5 °F to 131 °F) –55 °C to +70 °C (–67 °F to 158 °F)
- Relative humidity ≤90%
