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Microphones and Preamplifiers

Precision Microphone Cartridges

Condenser microphones offer IEC Type 1 performance and are sorted below by Response. Choose from Freefield, Pressure, Random Incidence, or Intensity Sets.

A note on Polarization voltage:
0V condenser microphones are often noted as Prepolarized. They feature a modern design, operate from standard ICP® sensor power - the same as ICP® style accelerometers and pressure sensors. 0V microphones offer a lower per-channel cost when cabling and signal conditioning is considered. 200V microphones are Externally Polarized and require a separate 200V power supply and expensive multi-pin cabling.

Precision Condenser Microphone/Preamplifier Pairs
  Mic Preamp Type Sensitivity
(mV/Pa)
Frequency Response
(±2dB)
Dynamic Range
(dB, ref 20µPa)
Connector
Type
378B02 377B02 426E01 Freefield 50 3.15-20000 18.5-135 BNC
378A07¹ 377A07 426E01 Freefield 50 0.13-20000 23-134 BNC
378C20 377C20 426E01 Random Inc 50 3.15-12500 20-135 BNC
378C01 377C01 426B03 Freefield 2 5-80000 53-162 10-32
378C10 377C10 426B03 Pressure 1 5-70000 53-174 10-32

[1] Includes 079A43 low frequency adaptor

Precision Condenser Microphone Cartridges
MFR Diameter
(in)
Response
Type
Sensitivity
(mV/Pa)
Frequency Response
(±2dB)
Dynamic Range
(dB, ref 20µPa)
Polarization Voltage
(V DC)
2520 LD 0.25 Freefield 3.7 4-70000 30-172 200
377C01 PCB 0.25 Freefield 2 4-80000 35-170³ 0
2540 LD 0.5 Freefield 14 4-40000 20-160 200
377C41 LD 0.5 Freefield 44.5 4-20000 15-146 200
377B02 PCB 0.5 Freefield 50 6.3-20000 15-146¹ 0
377A06 PCB 0.5 Freefield 12.6 3.15-31500 20-160¹ 0
377A074 PCB 0.5 Freefield 50 0.07-20000 15-145¹ 0
40AZ GRAS 0.5 Freefield 50 0.5-20000 15-148¹ 0
2570 LD 1 Freefield 50.7 2.6-18000 10-146 200
2530 LD 0.25 Pressure/Rand 1.3 4-63000 31-172 200
377A12 PCB 0.25 Pressure 0.25 4-20000 65-178¹ 0
377C10 PCB 0.25 Pressure 1.0 4-70000 35-174¹ 0
377B13 PCB 0.5 Pressure 12.6 3.15-20000 18-160¹ 0
377B11 PCB 0.5 Pressure 50 3.15-10000 15-143¹ 0
2559 LD 0.5 Random Inc 11.7 4-21000 18-160 200
2560 LD 0.5 Random Inc 45.2 2.6-10000 15-146 200
377C20 PCB 0.5 Random Inc 50 3.15-16000 15-144 0
377A60 PCB 0.5 Random Inc 50 3.15-10000 15-146 200
2575 LD 1 Random Inc 45.5 4-8000 10-146 200
40BI² GRAS 0.25 Intensity-FF 3 IEC 651 Type 1 40-168 200
2620PM LD 0.25 Intensity-FF 3.7 4-70000 30-164 200
2640PM LD 0.5 Intensity-FF 14 4-15000 20-160 200
40AI GRAS 0.5 Intensity-FF 25 IEC 651 Type 1 21-152 200
40AK² GRAS 0.5 Intensity-FF 25 IEC 651 Type 1 21-152 200

[1] When used with ICP power, about 8dB of dynamic range
[2] Intensity microphone pair rentals include preamplifiers, spacers and adaptors
[3] 50 - 160dB dynamic range with standard preamplifier
[4] Must be used with 079A43 low frequency adaptor

Microphone Preamplifiers
  Manuf Diameter
(in)
Connector Used With
426B03 PCB 0.25 10-32 0V (Prepolarized) Mics, ICP® power
PRM910B¹ LD 0.25 Switchcraft 5 pin LD 2200C, 2900, 870B only (not 812/820)
426E01 PCB 0.5 BNC 0V (Prepolarized) Mics, ICP® power
HT426E01 PCB 0.5 BNC High Temperature version of 426E01
PRM900C² LD 0.5 Switchcraft 5 pin LD 2200C, 2900 family, 3200, 870B
PRM902 LD 0.5 LEMO 1B 7 pin LD 824, traditional microphone power

[1] Integral 6ft cable
[2] Not for use with 812/820

Freefield
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Freefield microphones are the most common, as they accurately measure over the specified frequency range the sound pressure as if the microphone was not placed in the sound field.

 

2520
full specs

  • 0.25" diameter
  • 30-172 dB dynamic range
  • 200 V polarization
  • 3.7 mV/Pa sensitivity
  • 4-70 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

 

377C01
full specs

  • 0.25" diameter
  • 30-170* dB dynamic range
  • 0 V polarization
  • 2 mV/Pa sensitivity
  • 4-80 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

2540
full specs

  • 0.5" diameter
  • 20-160 dB dynamic range
  • 200 V polarization
  • 14 mV/Pa sensitivity
  • 4-40 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

 

377C41
full specs

  • 0.5" diameter
  • 15-146 dB dynamic range
  • 200 V polarization
  • 44.5 mV/Pa sensitivity
  • 3.15-20 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

 

377B02
full specs

  • 0.5" diameter
  • 15-146* dB dynamic range
  • 0 V polarization
  • 50 mV/Pa sensitivity
  • 3.15-20 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

377A06
full specs

  • 0.5" diameter
  • 20-160* dB dynamic range
  • 0 V polarization
  • 12.6 mV/Pa sensitivity
  • 3.15-31500 Hz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

377A07
full specs

  • 0.5" diameter
  • 15-145* dB dynamic range
  • 0 V polarization
  • 50 mV/Pa sensitivity
  • 0.07-20 kHz frequency range (±2dB) when used with 079A43 low frequncy adaptor, see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

2570
full specs

  • 1" diameter
  • 200 V polarization
  • 10-146* dB dynamic range
  • 50.7 mV/Pa sensitivity
  • 2.6-18 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

Pressure Response
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Pressure response measurements include the effects of the microphone's presence in the sound field, more evident at higher frequencies. Without correction, pressure response microphone response includes reflections and diffraction effects and is accurate for situations such as measuring sound levels at a wall.

 

2530
full specs

  • 0.25" diameter
  • 31-172 dB dynamic range
  • 200 V polarization
  • 1.3 mV/Pa sensitivity
  • 4-63 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

 

377A12
full specs

  • 0.25" diameter
  • 65-178* dB dynamic range
  • 0 V polarization
  • 0.25 mV/Pa sensitivity
  • 4-20 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

377C10
full specs

  • 0.25" diameter
  • 35-174* dB dynamic range
  • 0 V polarization
  • 1 mV/Pa sensitivity
  • 4-70 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

377B13
full specs

  • 0.5" diameter
  • 18-160* dB dynamic range
  • 0 V polarization
  • 12.6 mV/Pa sensitivity
  • 3.15-20 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

377B11
full specs

  • 0.5" diameter
  • 15-143* dB dynamic range
  • 0 V polarization
  • 50 mV/Pa sensitivity
  • 3.15-10 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

Random Incidence
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Random incidence microphones are best used in diffuse sound fields (sound sources from many directions), especially when high frequency content may be present. TEDS enabled units help channel bookkeeping when used with compatible systems.

 

2559
full specs

  • 0.5" diameter
  • 18-160 dB dynamic range
  • 200 V polarization
  • 11.7 mV/ \Pa sensitivity
  • 4-21 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

 

2560
full specs

  • 0.5" diameter
  • 15-146 dB dynamic range
  • 200 V polarization
  • 45.2 mV/ \Pa sensitivity
  • 2.6-10 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

 

377C20
full specs

  • 0.5" diameter
  • 15-144* dB dynamic range
  • 0 V polarization
  • 50 mV/Pa sensitivity
  • 3.15-16 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

* - When used with ICP power, reduce upper dynamic range level by approximately 8dB

 

377A60
full specs

  • 0.5" diameter
  • 15-146 dB dynamic range
  • 200 V polarization
  • 50 mV/Pa sensitivity
  • 3.15-10 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or PCB: ACS-20). See notes on calibration for additional information

 

2575
full specs

  • 1" diameter
  • 10-146* dB dynamic range
  • 200 V polarization
  • 45.5 mV/Pa sensitivity
  • 4-8 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-2 or LD: CER-MIC). See notes on calibration for additional information

Intensity Pairs and Sets
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Intensity sets are matched pairs of freefield microphones with extremely well-controlled phase characteristics for use in Sound Intensity measurements. Rental sets consist of two phase-matched condenser microphones along with preamplifiers and applicable spacers.

 

40BI Microphone Set
full specs

  • 0.25" diameter
  • 40-168 dB dynamic range
  • 200 V polarization
  • 3 mV/Pa sensitivity
  • IEC 651 Type 1

Rental Includes:
Spacers - 6mm, 12mm, 25mm
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-3). See notes on calibration for additional information

   

2640PM Microphone Pair

  • 0.5" diameter
  • 20-160 dB dynamic range
  • 200 V polarization
  • 14 mV/Pa sensitivity
  • 4-15 kHz frequency range (±2dB), see full specs for more detail

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-3 or LD: CER-PMIC). See notes on calibration for additional information

 

40AI Microphone Pair
full specs

  • 0.5" diameter
  • 21-152 dB dynamic range
  • 200 V polarization
  • 25 mV/Pa sensitivity
  • IEC 651 Type 1

Rental Includes:
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-3). See notes on calibration for additional information

 

40AK Microphone Set
full specs

  • 0.5" diameter
  • 21-152 dB dynamic range
  • 200 V polarization
  • 25 mV/Pa sensitivity
  • IEC 651 Type 1

Rental Includes:
Spacers - 12mm, 25mm, 50mm, 100mm
Adaptors - for preamplifiers
Calibration - NIST traceable and ISO 17025/A2LA accredited calibration for condenser microphones (TMS: MCS-3). See notes on calibration for additional information