Sennheiser HMDC 322 - Active Noise Cancellation Headsets

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The HMDC 322 is a pilot's headset with closed ear protector headphones and NoiseGard? active noise compensation for use in helicopters.

SENNHEISER HMDC 322 FEATURES
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, low-resistance M-87/AIC dynamic boom microphone for superior speech transmission

SENNHEISER HMDC 322 SPECIFATIONS
Transducer principle (Headphones): dynamic
Ear coupling: circumaural
Nominal impedance (active/passive): 50/35 Ohm-mono
Attenuation (active + passive): > 25 - 40 dB
Contact pressure: ca. 10 N
Weight w/o cable: 370 g
Transducer principle (Microphone): dynamic - M-87/AIC
Output voltage: 1.8 - 4 uV/74 dB at 5 Ohm
Operating temperature: -10 degC...+55 degC
Storage temperature: -55 degC...+55 degC
NoiseGard-Supply: 12 - 35 VDC, ca. 27 mA, max. 80 mA
Specials: NoiseGard on/off switch
Connection cable: coiled
Connector: U-174/U headphones & microphone, XLR-3 NoiseGard power, volume control for headphones
Frequency response (headphones): 45.....15000 Hz
Frequency response (microphone): 500.....4000 Hz

SENNHEISER HMDC 322 PACKAGE INCLUDES
1 HMDC 322 NoiseGard?
1 x 3-pin input socket for aircraft's internal power supply
1 carrying case for headset and accessories
1 MZQ 2002-1 cable clip


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Sennheiser HMDC 322 - Active Noise Cancellation Headsets - Sound and Light

  Saturday 17 February 2018       


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