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Model: 377A14

$810.00 USD
(Pricing valid in US only)

Datasheet

1/4 inch Pressure Mic Prepolarized, side vent

  • Nominal Microphone Diameter: 1/4"
  • Frequency Response Characteristic: Pressure
  • Frequency Range: (±2dB) 4 to 70000 Hz (4 to 70000 Hz)
  • Inherent Noise: <35 dB(A) re 20 µPa (<)
  • Dynamic Range: (3% Distortion Limit) 178 dB re 20 µPa

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 English:SI: 
Performance
Nominal Microphone Diameter1/4"1/4" 
Frequency Response CharacteristicPressurePressure 
Open Circuit Sensitivity1.0 mV/Pa1.0 mV/Pa[2] 
Open Circuit Sensitivity (±3 dB)-60 dB re 1 V/Pa-60 dB re 1 V/Pa[2] 
Frequency Range (±2 dB)4 to 70000 Hz4 to 70000 Hz 
Lower Limiting Frequency (-3 dB)0.25 to 3.0 Hz0.25 to 3 Hz 
Resonant Frequency (90° Phase Shift)65000 Hz65000 Hz[1] 
Inherent Noise<35 dB(A) re 20 µPa<35 dB(A) re 20 µPa 
Dynamic Range(3% Distortion Limit)178 dB re 20 µPa178 dB re 20 µPa[1] 
Environmental
Temperature Range (Operating)-40 to +248 °F-40 to +120 °C 
Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to +50°C))0.004 dB/°F0.007 dB/°C[2][1] 
Static Pressure Coefficient-0.003 dB/kPa-0.003 dB/kPa[2][1] 
Humidity Coefficient of Sensitivity (0 to 100%, non-condensing)±0.0012 dB/%RH±0.0012 dB/%RH[2] 
Influence of Axial Vibration (0.1g (1 m/s²))66 dB re 20 µPa66 dB re 20 µPa[1] 
Electrical
Capacitance (Polarized)5 pF5 pF[1] 
Polarization Voltage0 V0 V[3] 
Physical
Housing MaterialStainless AlloyStainless Alloy 
VentingSideSide 
Mounting Thread (Preamplifier)0.2244 - 60 UNS5.7 mm - 60 UNS 
Mounting Thread (Grid)0.25 - 60 UNS6.35 mm - 60 UNS 
Size - Diameter (with grid)0.28 in7.0 mm 
Size - Diameter (without grid)0.25 in6.4 mm 
Size - Height (with grid)0.41 in10.5 mm 
Size - Height (without grid)0.36 in9.1 mm 
Weight0.06 oz1.8 gm[1] 

All specifications are at room temperature unless otherwise specified.



Product Notes
[1] Typical.
[2] re 250 Hz
[3] Prepolarized
Accessories:
Supplied
ACS-20Calibration of Precision Condensor Microphones(1)
Optional Versions:
No optional versions
Product Documents
Additional Downloads
Microphone - Safe Handling and Maintenance

Prepolarized vs. externally polarized microphones

Comparison of 1/2" vs 1/4" condenser microphones