Here you will find two ultrasonic microphone systems for the highest demands, which have been developed for research and development to fulfil Class 1 industry standards. Both systems are supplied with NVH FFT analysis software, which outputs the measured values with level accuracy in physical units as a time signal or FFT in ASCII or CSV format.
Ultrasonic microphone capsule MK 301 E is designed for acoustic measurements in research, development and industry and is also used in building acoustics and audiometry, among other things.
The measuring microphone capsule MK 301 is suitable for class 1 sound level meters according to IEC 61672.
- WS3F according to IEC 61094-4
- Frequency response 5 Hz to 100 kHz
- Sensitivity 3,5 mV/ Pa
- IEPE 4 – 20 mA / 18 V – 30 V
- Free Field
- Sound pressure level up to 168 dB
- Range 35dBA to 168dB
- Pre-polarized
MK 301 E | WS3F according to IEC 61094-4 |
|---|---|
Diameter | 1/4″ |
Frequency Range | 5 Hz … 100 kHz (± 2 dB) |
Responce Type | Capacitive pressure transducer |
Electrode Forming Voltage | 0 V |
Sensitivity (dB re 20 μPa) | 3.5 mV/Pa (± 3 dB) |
Capacitance at 1 kHz | 4.5 pF |
Max. SPL for THD ≤ 3 % at 1 kHz | 168 dB peak |
Intrinsinc Noise Level | 36 dB (A) |
Operating Temperature Range | -20 °C ～ +100 °C |
Operating Humidity Range | 25 % ～ 90 %(RH) |
Storage Humidity Range | 25 % ～ 90 %(RH) |
Venting | Rear |
Outer Dimensions with protection grid | Ф 7 mm x 9.7 mm ± 0,02 mm |
Weight | 2 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 |
RME MP30-Ultra
ADI-2/4 Pro SE
High-Performance Converter
Frequency response: @ 768 kHz, -1 dB: 0.15 Hz – 348 kHz
Based on many years of continued feature development of the ADI-2 Pro, RME unveils the next addition to the countless award winning ADI-2 Series. The latest masterpiece comes with a newly developed circuit board, improved specs and faster DSP for an outstanding transparent sound signature, extreme power headphone amplifiers including IEM power setting, super low noise 4.4 mm Pentaconn balanced connection, trigger out function for powering on/off external devices.
Analog Inputs via MC 102A 2 channel IEPE sensor supply
- Signal to Noise ratio (SNR) @ +7/+1 dBu: >120 dB (AES17), 123 dBA
- Frequency response* @ 44.1 kHz, -0.1 dB: 0.4 Hz – 20.4 kHz
- Frequency response* @ 96 kHz, -0.5 dB: 0.2 Hz – 45.5 kHz
- Frequency response* @ 192 kHz, -1 dB: 0.15 Hz – 90.9 kHz
- Frequency response* @ 384 kHz, -1 dB: 0.15 Hz – 182 kHz
- Frequency response* @ 768 kHz, -1 dB: 0.15 Hz – 348 kHz
- THD @ -0.5 dBFS: > -130 dB, 0.0000316 %
- THD+N @ -0.5 dBFS: -119 dB, 0.000112 %
- Channel separation: > 130 dB @ 1 kHz
- Class 1 WS3F according to IEC 61094-4
- Microphone type: Free field
- Pre-polarized
- Microphone size: 1/4″
- Frequency response: 5 Hz to 100 kHz
- Polar pattern: omnidirectional
- Sensitivity 3.5 mV/Pa
- Measuring range 36 dB (A) to 168 dB SPL peak (5% dist.)
- IEPE supply 2 – 20 mA
- Bias voltage: 12.5 V
- Temperature range -10 to +100 °C
- Dimensions: ø12.5 x 150 mm
- Connector: BNC
- WS-RG-40 windscreen 40 mm diameter
Scope of delivery:
ZOOM MP30-Ultra
Ultrasonic microphone set
32-bit float IEPE interface
Frequency response 10 Hz to 95 kHz
ZOOM UAC-232 IEPE interface realized with the MP48 IEPE-XLR adapters.
It offers outstanding technical features in terms of the linearity of the frequency response from 10 Hz to 95 kHz and a signal-to-noise ratio with 32-bit float technology. You no longer have to worry about optimum leveling.
It is particularly suitable for measurement microphone applications such as ultrasonic measurements or measurements of very quiet noises in a measurement chamber.
- Dual AD circuitry with 32-bit float recording technology
- High-quality mic preamps, same as the Zoom F6
- 2x XLR/TRS combo inputs
- Headphone output and 2x TRS main outputs
- High-power headphone outputs (100 mW)
- Records up to 192 kHz sample rate
- Compatible with Windows, Mac, and iOS devices (Android not supported)
- Vertical or horizontal use
- Bus-powered operation (separate power required for Lightenting-enabled iOS devices)
- Class 1 WS3F according to IEC 61094-4
- Microphone type: Free field
- Pre-polarized
- Microphone size: 1/4″
- Frequency response: 5 Hz to 100 kHz
- Polar pattern: omnidirectional
- Sensitivity 3.5 mV/Pa
- Measuring range 36 dB (A) to 168 dB SPL peak (5% dist.)
- IEPE supply 2 – 20 mA
- Bias voltage: 12.5 V
- Temperature range -10 to +100 °C
- Dimensions: ø12.5 x 150 mm
- Connector: BNC
- WS-RG-40 windscreen 40 mm diameter
Scope of delivery:
Comparison of ultrasonic microphones
We are going to present a comparative measurement of the 1/4″ ultrasonic microphones RG-50 and MP30-Ultra.
The measurement is carried out with a 2-channel high-performance RME ADI-2/4 PRO SE transducer and two IEPE power supplies type 8201T.
The NVH FFT analysis software controls the RME high-performance device via the ASIO interface with a sampling rate of 384 kHz and is calibrated with a microphone calibrator before the measurement.
The compressed air from a compressor is used as the ultrasonic sound source.
