MP471 Microphone
MP471 is a 1/4-inch pressure-field microphone developed by BSWA. According IEC61672 Class 1 standard.Sensitivity (@250 Hz) :2 mV/Pa (±2 dB)
Frequency Range: 10 Hz ~ 40k Hz
Dynamic Range: 45 dBA ~ 168 dB
MP471 is pressure-field microphone which measure the pressure on membrane directly, should be used for measurement in closed couplers or close to reflective surface. Pressure-field microphone can also be used for free-field and random-incidence measurements under the 10000 Hz. The random-incidence measurements not be mentioned in most countries and regions standards except ANSI. Customers can choose diffuse-field microphone of BSWA when making measurements according to ANSI standards.
Specifications
|
Sound Field Type |
Pressure-field |
|
Diameter |
1/4” |
|
Level (IEC61672) |
Class 1 |
|
Frequency Response Range (Hz) |
10 ~ 40k |
|
Open-circuit Sensitivity @250 Hz (mV/Pa) (±2dB) |
2 |
|
Dynamic Range (dBA ~ dB) |
45 ~ 168 |
|
Base Noise (dBA) |
< 45 |
|
Pressure Equalization |
Rear vent |
|
Operating Temperature Range (℃) |
-30 ~ 80 |
|
Operating Humidity Range (RH) |
0 ~ 98% |
|
Capacitance (pF) |
6 |
|
Equivalent Volume of Front Space @250 Hz (mm3) |
0.6 |
|
Temperature Coefficient (dB/℃) |
-0.02 |
|
Humidity Coefficient (dB/%RH) |
0.003 |
|
Pressure Coefficient (250 Hz) (dB/kPa) |
-0.007 |
|
Dimensions |
IEC 61094－4 Type WS3 |
|
Mounting Thread for Preamplifier |
M 5.7 mm × 60 UNS |
|
Preamplifier Type |
MA401 |
Download information:
MP471 Microphone_Brief
