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Sennheiser HMEC25
General Description

The HMEC25-KA is a supraural closed back headset that weighs less than six ounces and has a split headband design for unsurpassed comfort and fit. Active noise cancellation (ANC) reduces noise by over 15 dB to provide over 30 dB of total noise attenuation. The microphone boom can be turned through 350° and can thus be worn on either side of the head. The microphone module with noise-compensated electret capsule and integrated pre-amplifier is easily replaceable in the unlikely event of damage.

AuSIM part number: AuSEN-HMEC25
Headphones can be ordered through AuSIM's on-line eCommerce site ... ORDER

  • Lightweight, closed back supra-aural headset
  • Two-piece adjustable headband ensures a secure fit
  • Extremely comfortable ear pads
  • 15 dB Active noise cancellation
  • 11 dB Passive Attenuation NRR
  • Noise-canceling electret microphone with rotating boom
  • FAA and JAR TSO approval C572 and C58a
Technical Data
Nominal impedance 200 ohm (active) 170 ohm (passive)
Load rating 94 dB
Contact pressure Approx. 2.5 N
Weight w/o cable 6 oz.
Headphone Transducer principle Dynamic, closed
Frequency response (headphones) 16 - 22,000 Hz
THD, total harmonic distortion < 1%
Ear coupling Supra-aural
Connection cable 6 ft.
Microphone Transducer Principal Electret, noise-canceling
Frequency response (microphone) 300-5,000 Hz
Sensitivity (microphone) 400mv ± 3dB (including preamplifier)
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