Sennheiser HMEC 372 User Manual

HMEC 300

HMEC 300 Low Impedance, Dynamic Microphone & Headphone

Experience excellent noise attenuation over the entire frequency range. The new HMEC 300
NoiseGard™ ensures superior speech intelligibility and voice transmission—even in the
loudest of surroundings.

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
NoiseGard™ circuitry with ease of use and optimum comfort in mind.

Features—Benefits

• Active noise compensation

• Lightweight and comfortable

• Volume control

• MKE 45 flexible boom mic for right or left-side use

• Switchable mono/stereo

• Single-sided, round cable

• High-quality carrier bag

Technical Data

Technical Data - Headphone

Transducer Principle Dynamic, closed back

Ear Coupling Circumaural

Frequency response 45–15,000 Hz
Nominal impedance (active / passive) 160 / 150 Ω (mono), 320 / 300 Ω (stereo)

Attenuation (passive + active) > 25–40 dB

Max. SPL external noise 188 dB

Headband pressure Approx. 10 N

Technical Data - Mic w/ Preamp

Transducer principle Electret, Noise Canceling

Frequency response 300–5,000 Hz

Max. SPL 120 dB
Min. terminating impedance 150 Ω

Output voltage 400 mV ± 3 dB @ 114 dB/SPL

Operating voltage 8-16 VDC, 8–25 mA

Technical Data - Connection

Connector 6.3 mm / PJ-068 / XLR 3-pin / U-174U / XLR 5-

pin (depending on model)

Current consumption 27 mA (zero signal max. 80 mA)

Connecting Cable 1.5 m single-sided, round cable

Product Variants

Mono version of HMEC 300, terminates
with 5 pin XLR HMEC 305

Mono version of HMEC 300, terminates with
U-174/U connectors for helicopters HMEC 322

Sennheiser Electronic Corporation, 1 Enterprise Drive, Old Lyme, CT 06371
Telephone: [phone] • Fax: [phone] • Web: http://www.sennheiserusa.com

Sennheiser Mexico:
Sennheiser Canada: 221 Labrosse Ave, Pte-Claire, PQ H9R 1A3. Telephone: [phone]. Fax: [phone]

Manufacturing Plant:Am Labor 1, 30900 Wedemark, Germany

Av. Xola 613, PH6, Col. Del Valle 03100, Mexico, DF. Telephone: [phone]. Fax: [phone]