AKG C 542 BL Mode D'emploi page 16

4 Cleaning
You can clean all metal surfaces with (industrial grade)
methylated spirits or alcohol.
5 Specifications
Polar pattern:
Frequency range:
Sensitivity:
Electrical impedance:
Recommended load impedance:
Max. SPL for 1% THD:
Equivalent noise level to CCIR 468-2:
Equivalent noise level to IEC 60268-4 (A-weighted):
Dynamic range:
Bass cut filter:
Powering:
Current consumption:
Opeating temperature:
Relative humidity:
16
omnidirectional (hemispherical)
20 to 20,000 Hz (mounted on very large boundary)
20 mV/Pa / -34 dBV re 1 V/Pa
< 600 ohms
> 2000 ohms
63 Pa / 130 dB SPL
28 dB
16 dB-A
114 dB max. (A-weighted)
switchable to flat or 150 Hz, 12 dB/octave
9 to 52 V phantom power to DIN 45 596/IEC 268-15
< 2 mA
-20°C to +60°C
99% (+20°C); 95% (+60°C)