Sennheiser HMEC 25-CAP NoiseGard Headphones

Sennheiser Updated: 2009-01-08 RSS
Sennheiser HMEC 25-CAP NoiseGard Headphones

The HMEC 25 is a very lightweight and comfortable closed pilot's headset with NoiseGard™ active noise compensation. Different connector and powering versions are available to suit every conceivable cockpit configuration.

Features

* Noise reduction of approx. 15 dB – consequently ATC signal can be decreased
* Lightweight and extremely comfortable to wear
* Two-piece adjustable headband ensures a secure fit
* Boom microphone with noise-compensated electret capsule
* Adjustable microphone boom can be turned through 350° and thus be worn
* Replaceable microphone capsule and microphone preamplifier
* FAA and JAA TSO approval C 57 a and C 58 a

Delivery Includes

* 1 HMEC 25 headset
* 1 MZW 45 windshield
* 1 MZQ 2002-1 cable clip
* 1 carrying case for headset and accessories

Technical Data

Transducer principle (Headphones): dynamic
Frequency response: 16 - 22.000 Hz
Nominal impedance (active/passive): 600 Ohm
Attenuation (active + passive): 15 - 30 dB
Weight w/o cable: 170 g
Transducer principle (Microphone): Electret - MKE 45-1
Frequency response: 300 - 5.000 Hz
Max. Sound pressure level: 120 dB
Output voltage: 400 mV +/- 3 dB / 114 dB/SPL
Operating voltage (stand alone): typ. 16 VDC (8-16 VDC, 8-25 mA)
NoiseGard-Supply: 28 VDC from aircraft via pin 5 of XLR
Specials: NoiseGard on/off switch
Connector: XLR-5 for headphones, microphone & NoiseGard power