Sennheiser HMDC HMEC 300 400, Инструкция по эксплуатации

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Technical data
HMEC 300 HMEC 302 HMEC 306 HMEC 400
Headphones
Transducer principle dy namic
Ear coupling circumaural, clo sed
Frequency respo nse 45–15,000 Hz
Nominal impedance active/passive 300/150
Ω
, mo no
600/300
Ω
, stereo
Attenuation ( active and passive) > 25–40 dB
Max. so und pressure level 120 dB (±5 %)
Contact pressure approx. 10 N
Microphone incl. preamplifier
Transducer principle electret mic capsule, noise-compensated, M KE 45
Frequency respo nse 300–5,000 Hz
Sensitivity –
Max. so und 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)
HMEC300US.book Se ite 32 Mittwoch, 7. April 2004 3:24 15