New Model 377A20 Random Incidence ½” ICPTM Microphone Offers Extended Frequency Range

January 23, 2006, Depew, NY, USA – The Vibration Division of PCB Piezotronics, Inc. (PCB®) introduces Model 377A20 prepolarized, 1/2” Random Incidence (Diffuse Field) microphone, which operates from ICP® sensor power. The distinguishing feature of this model is its extended frequency range to 16 kHz (+/- 2dB). It has a sensitivity of 50 mV/Pa and a wide dynamic range (14.6 to 146 dB (A) re 20µPa). This microphone has a +150 °C (+302 °F) operating temperature range and coefficient for temperature of -0.001 dB/ °C.

This model is one of a full series of modern, pre-polarized, condenser microphones and preamplifiers available from PCB. Powered by a 2 to 20 mA signal conditioner and standard coaxial cables, these modern designs allow for significant savings in power supply and cabling cost, greater ease-of-use and operate from the same power required for ICP® accelerometers. This provides the advantage of using microphones with ICP® accelerometers in the same test, with the same signal conditioning equipment, minimizing set-up time.

For additional information, contact the Vibration Division of PCB Piezotronics, Inc. on +001 716 684 0001; E-mail: vibration@pcb.com; or fax on +001 716 685 3886. For other PCB products, contact PCB directly on +001 716 684 0001, or visit our web site at www.pcb.com.

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PCB and ICP are registered trademarks of PCB Group Inc.