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Technical data
HMEC 300
HMEC 302
HMEC 306
HMEC 400
Headphones
Transducer principle
dynamic
Ear coupling
circumaural, closed
Frequency response
45–15,000 Hz
Nominal impedance active/passive
300/150
Ω
, mono
600/300
Ω
, stereo
Attenuation (active and passive)
> 25 – 40 dB
Max. sound pressure level
120 dB (
±
5%)
Contact pressure
approx. 10 N
Microphone incl. preamplifier
Transducer principle
electret mic capsule, noise-compensated, MKE 45-1
Frequency response
300–5,000 Hz
Sensitivity
–
Max. sound pressure level
120 dB
Min. terminating impedance
150
Ω
Output voltage
400 mV
±
3 dB at 114 dB (as per RTCA/DO 214)
Supply voltage
typ. 16 V DC (8 – 16 V DC, approx. 8 – 25 mA, as per RTCA/DO 214)