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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
  • 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
Technical Data
Nominal impedance
300/150 ohm-mono
600/300 ohm-stereo
(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
Transducer principle
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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