New Phantom Powered Preamplifier - Quality measurements, versatile
design for the audio market
A new, patent
pending, universal preamplifier from PCB Piezotronics, Inc. reduces
project costs by allowing users to interchange multiple test
microphone cartridges to meet unique testing requirements. Model
426A14 adapts to any IEC 61094-4 compliant, prepolarized microphone
for use in loudspeakerdesign, microphone and amplifier modeling,
and live sound or high definition recording applications.
The preamplifier may be purchased as a standalone or as a system
when paired with any of PCB ’s prepolarized microphone cartridges.
All mated pair systems come with accredited calibration certificates.
With this flexibility, speaker manufacturers can analyze lower
amplitudes down to 15.5 dBA with a ½” te st and measurement
grade cartridge. A quick switch to a ¼” cartridge
provides the capability to quantify transients and perform other
types of measurements across a wide frequency range from 4 Hz
to 100 kHz. The fast response time of this microphone system
is used to improve sound quality. With 1% Total Harmonic Distortion
(THD) at 156 dB SPL ,PCB ’s ¼” cartridges provide
increased sound intelligibility at high volume levels, a key
quality metric for loud speaker design. Microphones from PCB®
have a proprietary metal alloy diaphragm which provides superior
stability and accuracy under changing temperature, humidity,
and static pressure conditions as compared to low cost, electret
microphones with plastic diaphragms.
April 2017
