Cat No. 003374
HME 25-1
Headsets | Communications Headset
General Description
The HME 25-1 headset features dynamic, closed headphones and a broad-
cast quality MKE 2 Red Dot omni-directional close-talk microphone. It has
been designed specifically for use in noisy environments. Background
noise attenuation is achieved by the extreme closeness of the micro-
phone to the mouth. In addition, omni-directional microphones do not
suffer from increased low frequencies (proximity effect) and so give a
natural sound at close talking distances.
Features
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Broadcast quality microphone with superb transmission qualities
due to extremely flat frequency response
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Very light
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Two-piece padded headband, exceptionally comfortable
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Microphone can be worn on either left or right-hand side
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Delivery includes: 1 HME 25-1
1 MZW 1410 windshield
Recommended Accessories
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Velour ear pads (1 pair) Cat. No. 069417
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HZP 25 hygiene pads Cat. No. 077900
Replacement Parts
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Ear pads (1 pair) Cat. No. 040179
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MZW 1410 windshield Cat. No. 028718
Technical Data
Headphones
Transducer principle..............................................................dynamic
Ear coupling .........................................................supra-aural, closed
Frequency response ................................................. 30 – 16,000 Hz
Characteristic SPL .......................... 102 dB ± 3 dB at 1 kHz, 1 mW
Nominal impedance .................................................. 600 Ωper side
Load rating............................................................................. 200 mW
THD ................................................................................................ 0.5 %
Contact pressure ..........................................................approx. 3.3 N
Weight (without cable)..............................................approx. 190 g
Microphone
Transducer principle................................. back-electret condenser
microphone capsule
Frequency response ................................................. 40 – 20,000 Hz
Pick-up pattern .......................................................omni-directional
Sensitivity (free field, no load, 1 kHz)...........................6.7 mV/Pa
Min. terminating impedance..................................................4.7 kΩ
Operating voltage............................................................ 5 – 15 V DC
Connections
Connection cable............................1.8 m, steel cable, open-ended
Microphone Pick-up Pattern
2000 Hz
4000 Hz
8000 Hz
16000 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
dB
180∞
150∞
120∞
90∞
60∞
30∞
0∞
0
5
10
15
20
25
30∞
60∞
90∞
120∞
150∞
Microphone frequency response (near field)
measured with B&K 4227 artificial mouth (94 dB SPL, distance of 6 mm)
