7
LI0055 – Revision 25 June 2012
Technical Specifications
Dimensions and Data for 67AX
Dimensions
Microphone
Ø13.2 mm
Housing
Ø18.0 mm
Microphone set height
Without grid
8 mm
With
9.20 mm
Weight
15 g
Mounting Plate
Ø400 mm
Data was collected in a temperature of 23 °C (±3 °C) and in a relative humidity of 60 %
±20 %.
Frequency response for the set
±2.0 dB
3.15 Hz – 20 kHz
±1.0 dB
5 Hz – 12.5 kHz
Nominal sensitivity for the set
at 250 Hz
12.5 mV/Pa
Polarization voltage
0 V
Dynamic range for the set
Upper limit (3 % distortion)
146 dB re. 20 μPa
Thermal noise
22 dB(A) re. 20 μPa
Temperature
Operation
–30 °C to +70 °C
Storage
–40 °C to +85 °C
Static-pressure coefficient
250 Hz/25 °C
-0.008 dB / kPa
Humidity (non-condensing)
Range
0 – 100 % RH
Influence (250 Hz)
<0.1 dB (0 – 100 % RH)
Influence of axial vibration equivalent to 1 m/s²
66 dB re. 20μPa
Venting
Rear-vented
