Sennheiser HMEC 250 - 05-10 Instruction Manual page 22

Frequency response
(headphones)
Frequency response
(TalkThrough)
Nominal impedance passive 150 Ω mono/300 Ω stereo
Nominal impedance active 600 Ω mono/1.200 Ω stereo
Sound pressure level
THD at 94 dB SPL
Noise attenuation
Contact pressure
Microphone incl. preamplifier
Type
Transducer principle
Frequency response
Output voltage
Terminating impedance
Supply voltage
Connector assignment
¼" (6.35 mm) jack plug
1 Audio Hi left
2 Audio Hi right
3 Audio Lo
8–28,000 Hz
300–5,000 Hz
passive 98 dB at 1 kHz, 1 V
active 100 dB at 1 kHz, 1 V
< 1 %
13–34 dB passive attenuation, plus 16–25 dB active noise
compensation at low frequencies
approx. 8 N
BKE 46
pre-polarized condenser microphone, noise-compensating
350–6,000 Hz
80 mV/Pa (factory preset) =
800 mV at 114 dB SPL –2 dB
(adjustable from 17–100 mV/Pa)
150–2,200 Ω
8–16 V
5.25 mm jack plug
1 not assigned
2 Microphone Hi
3 Microphone Lo
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