Previously, almost all ½” pressure response microphones were limited to a maximum frequency of 10k Hz to 12k Hz, and thus could not be used in applications requiring full audible range. New Model 377A13 has a frequency range of 4 to 20k Hz (+ 2 dB). The maximum linear dynamic range has increased to 160 dB, with a low noise floor rating of 20 dB(A). It has an operating temperature of -40 to +120°C.
PCB® carries a full line of prepolarized condenser microphone and preamplifiers. Powered by a 2-20 mA signal conditioner and standard coaxial cables, these modern designs have become popular, due to significant savings in power supplies and cabling, and “ease of use.” Prepolarized designs can be used with the same constant current source required for ICP® accelerometers, allowing microphones to be used alongside accelerometers in the same test, minimizing set-up time. PCB® also offers traditional externally polarized microphones that run from a 200V power supply. Click here to request a quote.
