Technical Data; Specifications - Bosch Digital Congress Network Data Brochure

9. Technical data

Conforming to the international standard IEC 914; Conference systems - electrical and audio requirements.
9.1 Microphones
Typical microphone polar pattern
General
Frequency response
Transducer type
Directional pattern
Max. SPL for THD <3%
Equivalent input noise level
9.2 Headphones
Lightweight stereo headphones LBB 3443/00
Impedance
Frequency response
Power handling capacity
Sensitivity (1 kHz)
Weight
Colour
Under The Chin Stereo Headphones LBB 3441/10
Impedance
Frequency response
Power handling capacity
Sensitivity (1 kHz)
Weight
Colour
100 Hz to 16 kHz
condenser
cardioid
110 dB
24 dB (A)
2 x 32 Ω
50 Hz to 20 kHz (-10 dB)
50 mW
98 dB SPL/earpiece at 1 mW/earpiece
70 g (0.16 lb)
Charcoal with silver
2 x 150 Ω
50 Hz to 5 kHz (-10 dB)
60 mW
107 dB SPL/earpiece at 1 mW/earpiece
33 g (0.07 lb)
black
DCN Data Brochure
Typical frequency response of microphones
| Technical Data | 93