Measurement Microphone and Preamplifier
MIシリーズ
Responding to the desire to measure sound with a wide range of options.
The MI series
features a back electret type sound field measurement microphone
● Measurement microphone
● Microphone preamplifier
● Measurement TEDS microphone
● Low noise microphone
are available.
The MI-1271 is a precision-grade 1/2 inch back electret microphone.
By adopting a laser-welded fixation method for the titanium diaphragm, it achieves extremely high stability.
Additionally, featuring a wide temperature and humidity range (-30 °C to 80 °C / 0 to 90 %RH) and a broad frequency range (1 Hz to 20 kHz), it is a high-performance microphone capable of meeting various applications such as environmental noise measurement in high temperature and humidity environments, measurement of ultra-low frequency sounds (up to 20 Hz), and sound measurement during cold start tests of automobiles.
The MI-1235 has a frequency range that covers the audible spectrum from 10 Hz to 20 kHz, making it ideal for measuring and analyzing environmental noise and architectural acoustics, as well as for measuring and analyzing radiated sound from electronic devices and machinery.
It is a precision class microphone designed to be used in combination with the MI-3120 microphon preamplifier.
The MI-1433 has a frequency range of 20 Hz to 8 kHz, making it ideal for applications such as measuring environmental noise. It is a low-cost general-purpose microphone that can be used in combination with the MI-3120 microphone preamplifier.
The MI-1531 is a 1/4 inch back electret microphone that supports a wide frequency range of 10 Hz to 100 kHz. It is ideal for space-saving measurements. When combined with the preamplifier MI-3140, it can measure up to 157 dB.
The MI-3170 is a preamplifier for a 1/2 inch back electret condenser microphone, which can be used in combination with the MI-1271 microphone. With the adoption of the CCLD (constant current drive) method and BNC connector, it can be directly connected to numerous CCLD-compatible amplifiers, analysis equipment, data recorders, etc. When combined with the high-performance MI-1271 microphone, it covers a measurement range of ultra-low frequencies starting from 1 Hz and allows measurements over a wide temperature range of -30 °C to 80 °C.
The MI-3120 is a preamplifier for 1/2 inch back electret condenser microphones. It is of the CCLD (constant current drive) type with a BNC connector.
It is a versatile preamplifier that can be used in combination with microphones such as the MI-1235 and MI-1433.
The MI-3140 is a 1/4 inch back electret condenser microphone preamplifier. It is ideal for space-saving measurements. It features a CCLD (constant current drive) type with a 10-32 UNF connector.
It is a dedicated preamplifier designed to be used in combination with the MI-1531 microphone.
The MI-1271M12 measurement TEDS microphone is an integrated microphone that combines the MI-1271 microphone and the MI-3170 preamplifier.
It can be directly connected to devices equipped with a CCLD (constant current drive) power supply using a BNC cable. When connected to TEDS-compatible devices, information such as sensitivity is automatically read. As a result, it enables reliable measurements and time savings.
To create a more comfortable sound environment, there is a growing trend towards reducing noise levels in products such as home appliances and information equipment, as well as the sounds of motors and inverters that penetrate the cabin of vehicles. Low-noise microphones enable measurements of 10 dB (A-weighting) or less, which is difficult with conventional microphones.
Conventional low-noise microphones required a separate amplifier for power supply, but this product employs a CCLD (constant current drive) method, allowing it to be directly connected to a CCLD-compatible analyzer.
