Sennheiser 523983/A01 Headphones User Manual

The HMEC 26 headset
The HMEC 26 headset with NoiseGard™ active noise
compensation features dynamic, closed headphones. The
noise-compensating condenser microphone ensures
excellent speech transmission even in noisy
environments. Designed for use in aircraft cockpits.
y NoiseGard™ active noise compensation reduces
ambient noise by up to 18 dB – consequently the radio
volume can be decreased
y Lightweight
y Extremely comfortable to wear due to the patented
two-piece automatic headband and soft earpads
y Peak level protection (cannot be switched off)
safeguards you from volume peaks above 110 dB
y “Flip-away” headphone allows single-sided listening
y Flexible microphone boom, can be worn on either left
or right-hand side
y Noise-compensating condenser microphone ensures
excellent speech transmission
y Single-sided cable, easy to replace
y With NoiseGard™ switched off, the headset can be
used as a conventional headset
y Power supply for NoiseGard™ from aircraft DC power
supply system (on suitably equipped aircraft) or
batteries/rechargeable batteries
y “Auto shut-off” extends battery life
y TalkThrough function (HMEC 26-T only)