Sennheiser HMD 46 Instructions For Use Manual page 19

Specifications
Headphones
Transducer principle
Ear coupling
Frequency response
Impedance
Characteristic SPL
THD
Contact pressure
Microphone
Type
Transducer principle
Frequency response
Output voltage
Terminating impedance
Supply voltage
General data
Temperature range
Weight without cable
HME 46-31
dynamic, open
supra-aural
20–14,000 Hz
300 per system
103 dB SPL at 1 kHz, 1 mW, mono
83 dB SPL at 1 kHz, 1 V
< 1 % at 110 dB SPL
(350–3,000 Hz)
approx. 3 N
MKE 46
pre-polarized condenser
microphone,
noise-compensating
100–15,000 Hz
adjustable from 17–100 mV/Pa,
80 mV/Pa (factory pre-set)
400 mV at 114 dB SPL
150–2,200
8–16 V DC
Operation: –15 °C to 55 °C
Storage: –55 °C to 70 °C
150 g
17