REFURB: Sennheiser HMEC306 ANR Headset (6 pin Redel Connector)

Experience excellent noise attenuation over the entire frequency range. The new HMEC 306 NoiseGard(TM) ensures superior speech intelligibility and voice transmission - even in the loudest of surroundings.

This headset uses a 6 pin Redel connector for hard wired equipped aircraft (your panel must be wired to use this!).

Designed with ease of use and optimum comfort in mind, this lightweight headset is fitted with a volume control for the headphones, flexible boom microphone, collapsible cushioned headband, mono/stereo switch and the on/off switch for the NoiseGard(TM) circuitry.

Features 

• Active noise compensation 
• Lightweight (13.1 ounces!) and comfortable 
• Volume control 
• MKE 45 flexible boom microphone for right- or left-side use 
• Mono/stereo switch 
• NoiseGard(TM) on/off switch 
• Single-sided, round cable 
• High-quality carrier bag  
• TSO Certified

Technical Data - Headphones

• Transducer: dynamic, closed, circumaural 
• Frequency response 45 - 15,000 Hz 
• Nominal impedance active/passive: 160/150 ohms mono 320/300 ohms per system, stereo 
• Attenuation (active and passive) > 25 - 40 dB 
• Max. SPL 118 dB linear 
• Caliper pressure approx. 10 N 

Technical Data - Microphone with Preamplifier

• Type: MKE 45-1 
• Transducer: electret, noise-compensated 
• Frequency response 300 - 5,000 Hz 
• Max. SPL 120 dB (distortion < 5 %) 
• Output voltage 400 mV +- 3 dB at 114 dB/SPL (as per RTCA/DO-214) 
• Min. terminating impedance 150 ohms 
• Operating voltage typ. 16 V DC (8-16 V DC, 8-25 mA) as per RTCA/DO-214 

General Data

• Connection cable: single-sided round cable, length 1.5 m (5 feet)
• Weight without cable 370 g (13.1 oz.)
• NoiseGard(TM) supply: 12 - 35 VDC
• Current consumption approx. 27 mA, max. 80 mA 
• Fuse 500 mA multifuse 
• 6 pin Redel connector for NoiseGard(TM) supply 
• Mono/stereo switch, on/off switch for NoiseGard(TM), headphone volume control 
• Operating temperature -15 to +55 degree Celsius 
• Storage temperature -55 to +55 degree Celsius