Sennheiser HMD 25-1 - Headsets for Tower Communications

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The HMD 25-1 headset features dynamic, closed headphones giving excellent attenuation of background noise, and an MD 414 super-cardioid close-contact dynamic microphone. It has been designed specifically for use in noisy environments.

SENNHEISER HMD 25-1 FEATURES
Mircrophone with superb transmission qualities
Very light
Two-piece padded headband, exceptionally comfortable
Microphone can be worn on either left or right-hand side

SENNHEISER HMD 25-1 SPECIFATIONS
Transducer principle: dynamic
Ear coupling: supra-aural, closed
Frequency response: 20-16.000 Hz (Headphone)
Sound pressure level (SPL): 102 dB(SPL) +- 2dB at 1kHz, 1mW
Nominal impedance: 600 Ohm per side
Load rating: 200 mW
THD, total harmonic distortion: <1 %
Contact pressure: approx. 3,3 N
Weight w/o cable: approx. 190 g
Frequency response: 100-16.000 Hz (Mikrophone)
Pick-up pattern: super-cardioid
Sensitivity in free field, no load (1kHz): 1mV/Pa
Min. terminating impedance: 1000 Ohm
Connection cable: 1,8 m, steel cable, tin-plated open ends

SENNHEISER HMD 25-1 PACKAGE INCLUDES
1 HMD 25-1
1 MZW 414 windshield


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Sennheiser HMD 25-1 - Headsets for Tower Communications - Sound and Light

  Wednesday 14 November 2018       


Sound & Light News
Pilots report sightings of 'supersonic' UFOs over the Irish Sea
Evening Standard via Yahoo News UK13 Nov 20:15
Authorities have opened an investigation into multiple reports of UFOs flying at twice the speed of sound off the coast of Ireland. The Irish Aviation Authority (IAA) is looking into ...
How we made: Ministry of Sound
The Guardian13 Nov 06:00
If there ever a nuclear strike on London, everyone at the Ministry of Sound will probably survive. We wanted to be able to turn it up as loud as we could and not upset the neighbours ...
Multiple Pilots Report UFO: 'We Saw A Bright Light And It Just Disappeared'
HuffPost via Yahoo News UK13 Nov 09:44
Several commercials airline pilots reported a series of fast-moving unidentified objects in the skies off the west coast of Ireland last week in an incident now under investigation.
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