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HMEC300US.book Se ite 34 Mittwoch, 7. April 2004 3:24 15
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
All manuals and user guides at all-guides.com
HMEC 305
HMEC 305-C
dy namic
circumaural, closed
45–15,000 Hz
300/150 Ω, mono
> 25–40 dB
120 dB (±5 %)
approx. 10 N
electret mic capsule,
noise-compensated,
MKE 45
300–5,000 Hz
–
120 dB
150 Ω
400 mV ± 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)
HMEC 322
HMDC 322
50/35 Ω, mono
dynamic mic capsule,
noise-compensated,
M-87/AIC
500–4,000 Hz
1.8–4 µV / 74 dB at 5 Ω
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