Measurement Microphone and Preamplifier
MIシリーズ
A wide range of products to meet your needs for measuring sound.
The MI series
A sound field type measurement microphone employing a back electret design.
● Microphone for measurement
● Microphone preamplifier
● TEDS microphone for measurement
● Low-noise microphone
We have the following available.
The MI-1271 is a precision-grade 1/2-inch back-electret microphone.
By employing a laser welding fixing method for the titanium vibrating membrane, we have achieved extremely high stability.
In addition, its wide temperature and humidity range (-30 °C to 80 °C / 0 to 90 %RH) and wide frequency range (1 Hz to 20 kHz) make it a high-performance microphone capable of meeting a wide range of applications, such as measuring ambient noise in hot and humid environments, measuring ultra-low frequency sounds (up to 20 Hz), and measuring sound during cold-start tests of automobiles.
The MI-1235 has a frequency range that covers the audible range from 10 Hz to 20 kHz, making it ideal for measuring and analyzing ambient noise and building acoustics, as well as for measuring and analyzing radiated sound from electronic and mechanical equipment.
This is a precision-class microphone designed to be used in combination with the MI-3111 microphone preamplifier.
The MI-1433 has a frequency range of 20 Hz to 8 kHz, making it ideal for applications such as measuring ambient noise. It is a standard, low-cost, general-purpose microphone designed to be used in combination with the MI-3111 microphone preamplifier.
The MI-1531 is a 1/4-inch back-electret microphone with a wide frequency range of 10 Hz to 100 kHz. It is ideal for measurements in confined spaces. When combined with the MI-3140 preamplifier, it can measure down to 157 dB.
The MI-3170 is a preamplifier for 1/2-inch back-electret condenser microphones and can be used in combination with the MI-1271 microphone. Its CCLD (constant current drive) design and BNC connector allow for direct connection to numerous CCLD-compatible amplifiers, analysis equipment, data recorders, and other devices. When combined with the MI-1271 high-performance microphone, it covers an ultra-low frequency measurement range from 1 Hz and enables measurements over a wide operating temperature range (-30 °C to 80 °C).
The MI-3111 is a preamplifier for 1/2-inch back-electret condenser microphones. It uses a CCLD (constant current drive) system and has a BNC connector.
This is a general-purpose preamplifier that can be used in combination with microphones such as the MI-1235/MI-1433.
The MI-3140 is a 1/4-inch back-electret condenser microphone preamplifier. It is ideal for space-constrained measurements. It features CCLD (constant current drive) operation and a 10-32 UNF connector.
This is a dedicated preamplifier for use with the MI-1531 microphone.
The MI-1271M12 TEDS microphone for measurement is a microphone that integrates the MI-1271 microphone and the MI-3170 preamplifier into a single unit.
This device can be used by directly connecting it to equipment equipped with a CCLD (Constant Current Drive) power supply via a BNC cable. When connected to TEDS-compatible equipment, information such as sensitivity is automatically read. As a result, it enables reliable measurement 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-weighted) 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.
