Model: 377C41

$725.00 USD
(Pricing valid in US only)

1/2" condenser microphone, free-field, 200 V Polarization

  • Nominal Microphone Diameter: 1/2"
  • Frequency Response Characteristic: Free-Field
  • Frequency Range: (±2dB) 3.15 to 20000 Hz
  • Dynamic Range: >146 dB re 20 µPa

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Nominal Microphone Diameter1/2"1/2" 
Frequency Response Characteristic (at 0° incidence)Free-FieldFree-Field 
Open Circuit Sensitivity (±(1.2 dB)(at 250 Hz) )-27 dB re 1 V/Pa-27 dB re 1 V/Pa[2] 
Open Circuit Sensitivity (at 250 Hz)44.5 mV/Pa44.5 mV/Pa[2] 
Frequency Range (±2 dB)3.15 to 20000 Hz3.15 to 20000 Hz 
Lower Limiting Frequency (-3 dB)1.0 to 2.4 Hz1.0 to 2.4 Hz 
Resonant Frequency (90° Phase Shift)14000 Hz14000 Hz[1] 
Dynamic Range (3% Distortion Limit)>146 dB re 20 µPa>146 dB re 20 µPa 
Dynamic Range (Cartridge Thermal Noise)<15 dB(A) re 20 µPa<15 dB(A) re 20 µPa[1] 
Standards Designation (IEC 61094-4)WS2FWS2F 
Temperature Range (Operating)-40 to +302 °F-40 to +150 °C 
Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to +50°C))0.0033 dB/°F0.006 dB/°C[1] 
Static Pressure Coefficient-0.01 dB/kPa-0.01 dB/kPa[1] 
Influence of Humidity (0 to 95%, non-condensing)-0.1 to 0.1 dB-0.1 to 0.1 dB 
Influence of Axial Vibration (0.1g (1 m/s²))62 dB re 20 µPa62 dB re 20 µPa[1] 
Influence of Magnetic Field (60 Hz, 80 A/m)0 dB re 20 µPa0 dB re 20 µPa[1] 
Long Term Stability (68°F (20°C))>1000 years/dB>1000 years/dB 
Capacitance (Polarized)15 pF15 pF[1] 
Polarization Voltage200 V200 V 
Housing MaterialStainless AlloyStainless Alloy 
Equivalent Volume0.0027 45 mm³[1][2] 
Size - Diameter (with grid)0.52 in13.2 mm 
Size - Diameter (without grid)0.5 in12.7 mm 
Size - Height (with grid)0.64 in16.3 mm 
Size - Height (without grid)0.61 in15.5 mm 
Weight0.32 oz9 gm[1] 

All specifications are at room temperature unless otherwise specified.

Product Notes
[1] Typical.
[2] re 250 Hz
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

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