Technical data

32
Technical data
HMEC 300  HMEC 302  HMEC 306  HMEC 400
Headphones
Transducer principle dynamic
Ear coupling circumaural, closed
Frequen cy respo nse 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
Frequen cy respo nse 300–5,000 Hz
Sensitivity –
Max. sound pressure level 120 dB
Min. terminating impedance 150 Ω
Outp ut voltage 400 mV ± 3 dB at 1 14 dB ( as per R TCA /DO 21 4)
Sup ply voltag e typ. 1 6 V DC ( 8–1 6 V DC, ap prox. 8–25 mA, as per RTCA/DO 214)
HMEC300US.book Seite 32 Mittwoch, 7. April 2004 3:24 15