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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	3.75-20000	18.5-135	BNC
378A04¹	N/A	N/A	Freefield	450	10-16000	5.5-80	BNC
378A06	377A06	426E01	Freefield	12.6	3-40000	22-150	BNC
378A07²	377A07	426E01	Freefield	50	0.13-20000	23-134	BNC
378A21	377A21	426E01	Random Inc	12.6	4-25000	22-150	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
130A24¹	N/A	N/A	Freefield	10	20-16000³	30-150	BNC

[1] Not available as separate microphone and preamplifier

[2] Includes 079A43 low frequency adaptor

[3] Frequency response at ±3dB

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
377A15	PCB	1	Pressure	50	5-8000	10-150	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
377A21	PCB	0.5	Random Inc	12.6	4-25000	20-162	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 Back to Top 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 Back to Top 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
		377A15 full specs 1.0" diameter 10-150* dB dynamic range 0 V polarization 50 mV/Pa sensitivity 5 Hz - 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 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 Back to Top 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
		377A21 full specs 0.5" diameter 20-162* dB dynamic range 0 V polarization 12.6 mV/Pa sensitivity 4 Hz -25 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 Back to Top 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

Microphones and Preamplifiers

Precision Microphone Cartridges

Freefield Back to Top

Pressure Response Back to Top

Random Incidence Back to Top

Intensity Pairs and Sets Back to Top