IEPE Microphone Set

IEPE microphone set MP30 consisting of a ½” microphone capsule with preamplifier can be connected to all measuring devices with IEPE sensor supply.

MP30 is a class 1 measurement microphone according to the WS2F frequency response industry standard.

The low noise floor of less than 16 dB(A) and the linear frequency response of 4 Hz to 20 kHz is ideally suited for almost any precision measurement.

MP30 Set

½” Free Field Microphone

Class 1 and WS2F according to IEC 61094-4
Sensitivity 40mV/Pa
IEPE constant current supply 2-20 mA | Bias: 12.5 Volt
Polar Pattern: Omnidirectional
Frequency Response: 4 Hz – 20 kHz
Acoustic noise floor 16 dB A-weighted
Measuring range 16 dB(A) to SPL Peak (3% Dist.) 135 dB

Scope of delivery:

½” microphone capsule pre-polarized
½” IEPE microphone preamplifier

MP30 Microphone Capsule	IEC 61094-4 Type WS2F
Diameter	1/2″
Frequency Range	4 Hz ~ 10 Hz ± 1.5 dB 10 Hz ~ 4 kHz ± 0.5 dB 4 kHz ~ 20 kHz ± 2.5 dB
Responce Type	Free field
Electrode Forming Voltage	0 V
Sensitivity (dB re 20 μPa)	40 mV/Pa (± 3 dB)
Capacitance at 250 Hz	18 pF
SPL Max. at 250 Hz Distortion <3%	135 dB
Intrinsinc Noise Level	16 dB (A)
Operating Temperature Range	-20 °C ～ +60 °C
Operating Humidity Range	25 % ～ 90 %(RH)
Temperature Characteristics	0.01 dB/C° Maximum
Humidity Characteristics	0.001 %(RH)
Aging Drift	0.2 dB/Year
Storage Temperature Range	-20 °C ～ +60 °C
Storage Humidity Range	25 % ～ 90 %(RH)
Venting	Rear
Outer Dimensions	Ф 13.2 mm x 16.0 mm
Weight	8.3 gram

MP30	Preamplifier
Frequency Response (re. 250 Hz)	0.1 Hz ~ 10 Hz ± 3 dB 10 Hz ~ 20 kHz ± 0.1 dB 10 Hz ~ 200 kHz ± 0.2 dB
Gain	0.04 dB
Intrinsic Noise (20Hz ~ 20kHz)	< 5 μV A-weighting
Distortion (THD) @1kHz 1 V	< 0.1%
Output Impedance	＜50Ω
Max. Output Voltage	6.5 Volt^{RMS @ 21 Volt IEPE DC Offset}
IEPE Power Voltage	18 V ~ 30 V \| Bias : 12.5 Volt
IEPE Current	2 mA ~ 20 mA
Polarization Voltage	0 V
Dimensions	Ф 12.7mm × 70 mm
Weight	< 20 g (cable not included)
Operating Temperature	– 20°C ~ + 60°C
Humidity	25 %～ 90 %(RH)
Atmospheric Pressure	65 kPa～108 kPa
Connector Type	BNC
Thread for Microphone Capsule Mounting	11.7 mm-60 UNS

In the following, I would like to present the self-noise of four microphone models, including two 1/2‘ microphones and two 1/4’ microphones.

Following microphones were used for the measurements:

Model	1/2″ IEPE Microphone Sytems Class 1 WS2F	Price
MicCAL	Microphone Calibration Fee for all ROGA Instruments microphones. After successful factory calibration, the microphone is returned to the customer with our factory calibration certificate.	155 $
WS-RG-80	1/2″ measurement microphone wind screen Ø 80 mm diameter	38 $
MP30	MP30 Microphone Set Prepolarised Microphone Capsule with Microphone Preamplifier 1/2″ IEPE Free-field microphone Sensitivity 40 mV/Pa constant current supply 2- 20mA BNC connection Polar pattern: omnidirectional Frequency response 4 Hz ~ 10 Hz ± 1.5 dB 10 Hz – 4 kHz: ± 0.5 dB 4 kHz – 20 kHz: ± 2.5 dB free field, corresponds to class 1 including individual Calibration sheet (sensitivity & frequency response) Measuring Range: 16 dB(A) to 135 dB HS Code 85181000	854 $
MP30-Infra	1/2″ microphone for infrasonic low frequency applications WS2F according to IEC 61094-4 Free field 0.5 Hz to 20 kHz 15 dBA to 135 dB pre-polarized 1/2″ microphone preamplifier MP30 included HS Code 85181000	1446 $
MP40	MP40 Set 1/2 ” condenser microphone WS2F (DIN IEC 61094-4) Frequency range: 1.5 Hz – 3.5 Hz: ± 1.5 dB 3.5 Hz – 4 kHz: ± 0.5 dB 4 kHz – 20 kHz: ± 1.5 dB Free-field Including preamplifier PA-01 Dynamic range 16 dB(A) -135dB IEPE Constant Current powered Sensitivity: 50 mV / Pa Download MP-40 PDF HS Code 85181000	1236 $
MM210	1/2″ microphone for general applications WS2F according to IEC 61094-4 Free field 50 mV/Pa 3.5 Hz to 20 kHz 15 dBA to 146 dB pre-polarized 1/2″ microphone preamplifier MV210 included HS Code 85181000	1250 $
MMS 214	Low noise microphone MMS 214 has a particularly low inherent noise level and is designed for acoustic measurements of low sound pressure levels close to the threshold of human hearing HS Code 85181000	2950 $
1/2″ Microphone capsules	1/2” measuring microphone capsules with different properties. From infrasound to ultrasonic models HS Code 85181000	–

Model	USB Microphone Systems Class 1 WS2F	Price
	ROGA Instruments products are free from planned obsolescence, technically accessible, durable and repairable.
iSV1611-Infra	1/2″ USB microphone for infrasound applications WS2F according to IEC 61094-4 Free field 1 Hz to 20 kHz 15 dBA to 135 dB pre-polarized 1/2″ USB microphone preamplifier iSV1611 included HS Code 85181000	1625 $
iSV1611-Ultra	1/4″ USB microphone for ultrasonic applications MK 301 E Microphone Capsule WS3F according to IEC 61094-4 Free field 5 Hz to 80 kHz 35 dBA to 168 dB pre-polarized 1/2″ USB microphone preamplifier iSV1611 included HS Code 85181000	1715 $

Preamplifier and Prepolarized Class 1 Microphone Capsule included

Microphone Comparison Floor Noise