Model: 377A15

$900.00 USD
(Pricing valid in US only)


1 in prepolarized pressure microphone

  • Nominal Microphone Diameter: 1"
  • Frequency Response Characteristic: Pressure
  • Frequency Range: (+/-2dB) 5 to 8000 Hz
  • Inherent Noise: 10 dB(A) re 20 µPa
  • Dynamic Range: >150 dB re 20 µPa

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Nominal Microphone Diameter1"1" 
Frequency Response CharacteristicPressurePressure 
Open Circuit Sensitivity (+/-2 dB)-26 dB re 1 V/Pa-26 dB re 1 V/Pa[2] 
Open Circuit Sensitivity50 mV/Pa50 mV/Pa[2] 
Frequency Range (+/-2 dB)5 to 8000 Hz5 to 8000 Hz 
Lower Limiting Frequency1 to 3 Hz1 to 3 Hz 
Resonant Frequency (90° Phase Shift)8600 Hz8600 Hz[1] 
Inherent Noise10 dB(A) re 20 µPa10 dB(A) re 20 µPa[1] 
Inherent Noise<11.5 dB(A) re 20 µPa<11.5 dB(A) re 20 µPa 
Dynamic Range (3% Distortion Limit)>150 dB re 20 µPa>150 dB re 20 µPa 
Standards Designation (IEC 61094-4)WS1PWS1P 
Temperature Range (Operating)-40 to +248 °F-40 to +120 °C 
Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to +50°C))+0.006 dB/°F+0.01 dB/°C[1][2] 
Static Pressure Coefficient-0.012 dB/kPa-0.012 dB/kPa[1][2] 
Humidity Coefficient of Sensitivity (0 to 100%, non-condensing)+/-0.001 dB/%RH+/-0.001 dB/%RH[2] 
Influence of Axial Vibration (0.1g (1 m/s²))66.5 dB re 20 µPa66.5 dB re 20 µPa[1] 
Capacitance45 pF45 pF[1] 
Polarization Voltage0 V0 V[3] 
Housing MaterialStainless AlloyStainless Alloy 
Mounting Thread (Preamplifier)0.9098-60 UNS23.11mm-60 UNS 
Mounting Thread (Grid)0.9098-60 UNS23.11mm-60 UNS 
Size - Diameter (with grid)0.936 in23.77 mm 
Size - Diameter (without grid)0.936 in23.77 mm 
Size - Height (with grid)0.748 in19 mm 
Size - Height (without grid)0.668 in17 mm 
Weight1.08 oz30.6 gm[1] 

All specifications are at room temperature unless otherwise specified.


Product Notes
[1] Typical.
[2] re 250 Hz
[3] Prepolarized
[4] See PCB Declaration of Conformance PS167 for details.
ACS-20Calibration of Precision Condensor Microphones(1)
Optional Versions:
No optional versions
Product Documents
Additional Downloads None Listed
Microphone - Safe Handling and Maintenance

Prepolarized vs. externally polarized microphones