The M23R is a precision engineered 23kHz omnidirectional measurement microphone ideally suited for acoustical measurements including loudspeaker design and quality control, sound system setup and troubleshooting, room acoustics, or any application where an accurate free-field measurement microphone is required.
Every M23R has the same frequency response and sensitivity – matched to within +/- 0.5dB across the entire operating frequency range (3Hz to 23kHz).
FREQUENCY RESPONSE 3Hz -23kHz ±0.5dB
POLAR PATTERN Omnidirectional
SENSITIVITY 36mV/Pa (-28.9dBV/Pa)
POWER REQUIREMENTS 24-48V Phantom, 10mA
MAX ACOUSTIC INPUT 140dB SPL
OUTPUT XLR (pin 2+)
OUTPUT IMPEDANCE 65Ω balanced (between pins 2 & 3)
MIN OUTPUT LOAD 600Ω between pins 2 & 3
NOISE 20dB SPL equivalent (A weighted)
OPERATING TEMPERATURE RANGE -4º to 140º F (-20º to +60º C)
STORAGE TEMPERATURE RANGE -40º to 176º F (-40 to +80º C)
HUMIDITY Up to 90%
DIMENSIONS (L x D) 165mm x 22mm (6.25 x .860 inches)
WEIGHT 5 lb. (225g)