PRESS RELEASE

For Immediate Release:

For more information: Kristen Lovejoy Marketing Manager (800) 828-8840 klovejoy@pcb.com

Measure Extremely Low Amplitudes with PCB's ¼" Microphone System

Introducing PCB Model 378A08 low noise ¼" free-field microphone and preamplifier system

July 18, 2024 - Depew, NY - PCB Piezotronics (PCB®) is introducing new Model 378A08 low noise ¼" (6mm) diameter free-field microphone and preamplifier system with multiple sound field usage capability. Model 378A08 measures to 25 dBA within a low profile prepolarized (0V) design.

Model 378A08 features:

  • Low noise – 25 dBA (22 dBA typical)
  • Low profile – minimal disturbance to the sound environment
  • Multiple field testing capability: free-field, diffuse field/random incidence, and pressure field
Model 378A08

 

Traditionally smaller diameter microphones have lower sensitivity (0.25 – 2 mV/Pa), which does not allow for lower amplitude testing. Compared to other ¼" mics, the 378A08 has an extremely high sensitivity rating of 50 mV/Pa, which allows it to a obtain noise floor specifications comparable to larger ½" (12mm) diameter microphones.

The 378A08 is multiple-field capable. Its reduced size minimizes its impact on the sound field, especially at higher frequencies, resulting in accurate data even when used in a sound field other than free-field, which it was designed for. This saves users the cost of needing to buy multiple sensors for different types of sound fields.

Model 378A08 can be used for many low noise test applications including cabin noise testing for automotive and aerospace, electric vehicle testing, component testing, computer fan/disk drive/white goods noise testing, and general low noise tests requiring a small profile sensor.

For more information visit https://www.pcb.com/products?m=378A08. For technical inquiries and application support, please contact Mark Valentino at mvalentino@pcb.com or (800) 828-8840.

About PCB Piezotronics

PCB manufactures vibration, pressure, force and strain, shock, and acoustic sensors used by design engineers and predictive maintenance professionals worldwide for test, measurement, monitoring, and control requirements. Our sensors support testing in aerospace and defense, automotive, transportation, civil engineering, and general R&D industries. Primary sensing technologies include piezoelectric (ICP®), piezoresistive, and capacitive MEMS. With a worldwide customer support team, 24-hour SensorLine, and a global distribution network, PCB is committed to Total Customer Satisfaction. PCB Piezotronics is a wholly-owned subsidiary of Amphenol Corporation. More info at www.pcb.com. For more information about Amphenol, visit www.amphenol.com.