Preamplifier for Measurement Microphones in Space Constrained Applications

September 30 2014, 09:00
PCB Piezotronics introduced a new short preamplifier for test engineers and acoustic consultants taking measurements with a new design, ideal for spaces where traditional microphone systems won’t fit or where space constraints are a concern.

This new preamplifier, Model 426A07, converts a high impedance signal from a measurement microphone into a low impedance signal. The preamplifier can be paired with any PCB 1/4” free-field, random incidence (diffuse field) and pressure microphone cartridges to test high frequencies ranging from the human audible range (20 Hz to 20 kHz) up to ultrasonic frequencies (greater than 100 kHz) and high amplitude measurements past the human threshold of pain (up to 194 dB). 

Common test applications include space-constrained cavities, impedance tubes, under automotive and jet engines, transmission loss and absorption, and embedded into the walls of cavities and tubes.

In the picture we can see the PCB  short preamplifier Model 426A07 shown with a 1/4” microphone.
The preamplifier electronics have been reduced to fit in a housing that is only 1.2” (29.5mm) in length and 1.5” (38.1mm) overall length when combined with any PCB 1/4” microphone cartridge. 

The  new  preamplifier is  competitively  priced, is in stock and available for immediate shipment.

PCB Piezotronics is a designer, manufacturer, and global supplier of accelerometers, microphones, and force, torque, load, strain, and pressure sensors, as well as the pioneer of ICP technology. This instrumentation is used for test, measurement, monitoring, and control requirements in applications for automotive, aerospace, industrial, energy, R&D, military, educational, commercial, and OEMs.
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