Model: 2560

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1/2 in random incidence condenser microphone, typical sensitivity = 45 mV/Pa. 200 VDC polarization

Externally polarized 1/2 inch random incidence microphone, 45.2 mV/Pa, 10 kHz.

  • Nominal Microphone Diameter: 1/2"
  • Frequency Response Characteristic: Random Incidence
  • Frequency Range: (±1dB) 4 to 8000 Hz
  • Dynamic Range: >146 dB re 20 µPa

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Nominal Microphone Diameter1/2"1/2" 
Frequency Response Characteristic (at 0° incidence)Random IncidenceRandom Incidence 
Open Circuit Sensitivity (±1.1 dB)-26.9 dB re 1 V/Pa-26.9 dB re 1 V/Pa[2] 
Open Circuit Sensitivity45.2 mV/Pa45.2 mV/Pa[2] 
Frequency Range (±1 dB)4 to 8000 Hz4 to 8000 Hz 
Frequency Range (±2 dB)2.6 to 10000 Hz2.6 to 10000 Hz 
Lower Limiting Frequency (-3 dB)1 to 2 Hz1 to 2 Hz 
Resonant Frequency (90° Phase Shift)11000 Hz11000 Hz[1] 
Inherent Noise15 dB(A) re 20 µPa15 dB(A) re 20 µPa[1] 
Dynamic Range (3% Distortion Limit)>146 dB re 20 µPa>146 dB re 20 µPa 
Temperature Range (Operating)-40 to 302 °F-40 to 150 °C 
Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to +50°C))0.003 dB/°F0.006 dB/°C[1] 
Static Pressure Coefficient-0.007 dB/kPa-0.007 dB/kPa[1] 
Humidity Coefficient of Sensitivity (0 to 95%, non-condensing)±0.001 dB/%RH±0.001 dB/%RH 
Influence of Axial Vibration (0.1g (1 m/s²))62 dB re 20 µPa62 dB re 20 µPa[1] 
Capacitance (Polarized)21 pF21 pF[1] 
Polarization Voltage200 V200 V 
Housing MaterialStainless AlloyStainless Alloy 
Mounting Thread (Preamplifier)0.4606 - 60 UNS11.7 mm - 60 UNS 
Mounting Thread0.5 - 60 UNS12.7 mm - 60 UNS 
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 
Weight0.28 oz7.8 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 None Listed
Additional Downloads None Listed
Microphone - Safe Handling and Maintenance

Prepolarized vs. externally polarized microphones