Technical data
Headphones
Transducer principle Ear coupling Frequency response
Nominal impedance active/passive
Attenuation (active and passive) Max. sound pressure level Contact pressure
Microphone incl. preamplifier
Transducer principle
Frequency response
Sensitivity
Max. sound pressure level Min. terminating impedance Output voltage
Supply voltage
HMEC 300 | HMEC 302 | HMEC 306 | HMEC 400 |
dynamic
circumaural, closed
>25 – 40 dB
120 dB (± 5%) approx. 10 N
electret mic capsule,
–
120dB
150Ω
400mV ± 3 dB at 114 dB (as per RTCA/DO 214)
typ. 16 V DC (8 – 16 V DC, approx. 8 – 25 mA, as per RTCA/DO 214)
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