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HMEC 46-1 Comparison with Telex Airman 850
Sennheiser
HMEC 46-1
Feature
Wearer Comfort
Weight
Clamping
Pressure
Ergonomic
factors
Headphone
THD*
ANR Performance
Peak-Level
Protection
Volume Control
Microphone
Microphone
sensitivity
adjustment
Warranty
Serviceability
Power
150 grams without cable
3 N with broad, soft ear pads
Telex
Airman 850
112 grams without cable
1.2 to 1.6 N (insufficient to stabilize headset –
particularly in turbulent conditions)
Split headband for better center of
gravity
Single (un-split) headband
<1%
Up to 9%
Up to 22 dB with broad frequency
range
Eliminates incoming volume spikes
>110 dB to protect user’s hearing
Fully adjustable volume control
available
Noise compensating microphone,
integrated POP noise protection
Yes, potentiometer on boom side ear
piece
5 years parts and labor
Modular design enables boom and
cable to be exchanged in the field;
international service centers available
120 hours on 2 AA batteries; auto
battery shut-off when headset
unplugged extends battery life
Up to 12 dB with narrow frequency range
Not available
Hi-Lo setting only (9 dB)
Noise compensating microphone
No, factory set
3 years
Service center in Lincoln, NE
Power from microphone bias voltage; ANR
performance may be affected by low bias voltage
*THD = Total Harmonic Distortion: Lesser THD allows the components in a loudspeaker, amplifier or microphone or other equipment to
produce a more accurate reproduction by reducing harmonics added by electronics and audio media. A THD rating < 1% is considered to be in
high-fidelity and inaudible to the human ear.
January 15 to June 30 2011: Purchase a Sennheiser HMEC 46-1 B-K and receive a $100 manufacturer’s
rebate from Sennheiser.