HMEC 45 NoiseGard™

Headsets Pilot´s Headset with NoiseGard™ Active Noise Compensation

General Description

The HMEC 45 is a very lightweight and comfortable open pilot’s head- set (boomset) with NoiseGard™ active noise compensation. Different connector and powering versions are available to suit every conceivable cockpit configuration.

Technical Data

Cat. No. 004498

HMEC 45

Cat. No. 004497

HMEC 45-CA

Cat. No. 004498

HMEC 45-KA

Cat. No. 004649

HMEC 45-KAX

Features

Noise reduction of approx. 10 dB – consequently ATC signal can

￿be decreased

Lightweight, with soft ear pads

Two-piece adjustable headband ensures a secure fit

Boom microphone with noise-compensated electret capsule

￿Adjustable microphone boom can be turned through 350° and thus be worn on either side

FAA and JAA TSO approval C 57 a and C 58 a

￿Delivery includes: 1 HMEC 45 headset, 1 MZW 45 windshield

1 MZQ 2002-1 cable clip

Recommended Accessories

 

HZH 60 hygiene pads (100 pairs)

Cat. No. 003553

￿HZP 45 comfort hygiene pads

Cat. No. 091592

Replacement Parts

 

Ear pads(1 pair)

Cat. No. 046581

￿MZW 45 windshield

Cat. No. 075823

Headphones

 

 

Transducer principle

dynamic

Ear coupling

supra-aural, open

Frequency response

20 – 18,000 Hz

Impedance active/passive

600 Ω/160 Ω (2 x 1,200 Ω/

 

 

2 x 320 Ω connected in parallel)

Nominal SPL

102 dB/SPL ± 3 dB

(1 kHz, 1 mW)

(as per RTCA/DO 214)

Active noise compensation

10 dB ± 3 dB between

 

 

400 Hz and 1 kHz

NRR (Noise Reduction Rating)

11 dB

THD

< 1 %

Contact pressure

approx. 1.6 N

Weight without cable

140 g

Microphone incl. Preamplifier

 

Type

MKE 45-1

Transducer principle

back-electret condenser capsule,

 

 

noise-compensated

Frequency response

300 – 5,000 Hz

Max. SPL

120 dB

Output voltage

400 mV ± 3 dB at 114 dB

 

 

(as per RTCA/DO 214)

Terminating impedance

150 Ω

Operating voltage

8 – 16 V DC, 8 – 25 mA

 

 

(as per RTCA/DO 214)

General Data

 

 

Connection cable

single-sided round cable, length 1.8 m

NoiseGard™ supply

 

 

-CA/-KA

2 x 1.5 V AA batteries or

 

2 x 1.2 V AA rechargeable batteries

-KAX

12 – 35 V DC from the aircraft,

 

 

via XLR-3 connector

Operating time approx.

 

 

-CA/-KA

Batteries: 80 h

 

 

Rechargeable batt.: 20 h

Switch -CA/-KA

Battery/NoiseGard™ on/off

Indicator -CA/-KA

green LED for Power On

Connector(s)

 

 

-CA

XLR-5

-KA

 

 

Headphones

1/4” stereo jack (6.3 mm Ø)

 

 

(converted to mono)

Microphone

PJ-068 (5.25 mm Ø)

-KAX

 

 

Headphones

1/4” stereo jack (6.3 mm Ø)

 

 

(converted to mono)

Microphone

PJ-068 (5.25 mm Ø)

NoiseGard™ supply

XLR-3

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Sennheiser HMEC 45-CA, HMEC 45-KAX manual Hmec 45 NoiseGard, Hmec 45-CA, Hmec 45-KAX

HMEC 45-CA, HMEC 45, HMEC 45-KAX, HMEC 45-KA specifications

The Sennheiser HMEC 45 series offers a range of high-performance aviation headsets designed to meet the needs of pilots and aviation professionals. This series includes the HMEC 45-KA, HMEC 45-KAX, HMEC 45, and HMEC 45-CA models, each featuring advanced technologies and ergonomic designs that enhance communication and comfort during flights.

One of the standout features of the HMEC 45 series is their exceptional noise attenuation capabilities. These headsets utilize advanced passive noise cancellation technology, allowing users to experience clear audio communication even in the loudest of environments, such as cockpits of commercial aircraft or during flight training sessions. The ear cups are specifically designed to fit snugly and effectively block out ambient noise, providing an immersive listening experience.

The HMEC 45 models are equipped with high-quality, noise-canceling microphones that ensure crystal-clear communication between pilots and air traffic control. The microphones are designed to minimize background noise, delivering clear voice transmission without interference. This is particularly crucial for pilots who need to maintain focus while flying and communicating with ground personnel.

Comfort is a key consideration in the design of the HMEC 45 series. The headsets feature plush, replaceable ear pads and a lightweight construction that allows for long wear without discomfort. The adjustable headband design ensures a secure yet comfortable fit for users of various head sizes, making them suitable for prolonged use during flights or training exercises.

For those who require versatility, the HMEC 45-KA and HMEC 45-KAX models come with additional features, such as dual connectivity options, allowing users to connect the headsets to different communication systems. This is particularly beneficial for pilots who may switch between aircraft or use different communication devices during flights.

Durability is also a hallmark of the Sennheiser HMEC 45 series. The headsets are constructed from high-quality materials that can withstand the rigors of an aviation environment. This ensures that they can withstand everyday use while maintaining performance over time.

Overall, the Sennheiser HMEC 45 series headsets combine advanced technology, exceptional comfort, and robust durability to meet the demands of aviation professionals. With features aimed at enhancing communication and comfort, these headsets are an ideal choice for pilots, flight instructors, and aviation enthusiasts seeking reliable audio equipment in their cockpit environments.