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 micro-phone module with noise-compensated electret capsule and integrated
pre-amplifier is easily replaceable in the unlikely event of damage.
Features:
- Â 16 dB passive noise reduction
- Â Extreme lightweight comfort (5.9 oz)
- Â Noise-canceling electret microphone
- Â Connector: uses 6 pin Redell connector, same as Bose Series II
Condition:
Headphone:
Transducer Principle: Dynamic
Ear Coupling: Supra-aural
Frequency Response: 16–22,000 Hz
Impedance: 200 Ω (active) 170 Ω (passive)
Sensitivity: 94 dB
Distortion: <1%
Active Attenuation: 15 dB between 100 Hz and 2000 Hz
Passive Attenuation: 16 dB
Operating Voltage: Not applicable
Headphone Pressure: Approx. 2.5 N
Weight (w/o cable): Approx. 6 oz.
Microphone (with Preamplifier):
Transducer Principle: Electret, Noise Cancelling
Frequency Response: 300–5,000 Hz
Sensitivity: 400mV ±3 dB (incl. preamplifier)
Operating Voltage: 8–16 VDC, 6mA
Connection:
ANC Power Supply: 2 AA batteries (operating time 30 hours)
Headphone/Microphone: PJ-0068, PJ-055
Connecting Cable Length: 6 ft.
"
