AuSIM: Products, HMEC300 Headset

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Sennheiser HMEC300
Dynamic, closed headset with NoiseGard

General Description
Featuring NoiseGard active noise compensation and excellent passive attenuation, the HMEC 300 pilot's headset is an ideal choice for helicopters, propeller and turboprop aircraft.

AuSIM part number: AuHMEC300
Headphones can be ordered through AuSIM's on-line eCommerce sit e ...ORDER

Features

Constant attenuation of up to 40 dB throughout the entire audio range
Advanced transducer design ensures excellent speech intelligibility
Electronics fully integrated into headphone capsules
Can be used as conventional headphones when supply voltage is switched off
Noise-compensated boom microphone for superior speech transmission

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Technical Data
Nominal impedance (active/passive)	300/150 ohm-mono 600/300 ohm-stereo
Attenuation (active + passive)	> 25 - 40 dB
Contact pressure	ca. 10 N
Weight w/o cable	370 g
Jack plug	6.3 mm stereo-headphones, PJ-068-microphone, XLR-3 NoiseGard power, volume control for headphones
Transducer principle (headphones)	Dynamic
Transducer principle (microphone)	Electret - MKE 45-1
Ear coupling	Circumaural
Connection cable	1.5m
NoiseGard Supply	12 - 35 VDC, ca. 27 mA, max. 80 mA
Sound pressure level (SPL) @ 1 KHz	120 db
Frequency response (headphones)	45 - 15000 Hz
Frequency response (microphone)	300 - 5000 Hz

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