M23

23kHz Measurement Microphone

The M23 is a cost effective reference microphone for SMAART, MLSSA, Spectrafoo software, TEF and RTA, and all “audio band” measurements. It has a flat frequency response, fast impulse response and exceptional polar characteristics.

  • 9Hz – 23kHz flat frequency response

  • Omnidirectional polar pattern

  • Handles up to 138dB SPL without distortion

From $499

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  • 23kHz flat frequency response
  • Cost effective measurement microphone
  • Improved version of the SMAARTMIC™ previously offered by EAW
  • Ideally suited for acoustical measurements sound system setup and troubleshooting, room acoustics, or any application where an accurate free-field measurement microphone is required
  • Omnidirectional polar pattern
  • Flat frequency response, fast impulse response and exceptional polar characteristics
  • Used by SMAART™, MLSSA™, Spectrafoo™, TEF™ and RTA in addition to acoustic measurement systems manufactured by dbx, DEQX and others
  • Meets or exceeds ANSI Type 1 and applicable IEC 61094 requirements
  • Each M Series microphone is delivered with its own calibration chart providing its individually measured open-circuit sensitivity and the frequency response curve
  • Electronic Calibration File available
  • Operating Temp Range: -20 deg C to +60 deg C ( -4 deg. F to 140 deg. F)
  • Storage Temp Range: -40 deg C to +80 deg C ( -40 deg. F to 176 deg. F)
  • Humidity: Up to 90%
  • Re-calibration recommended every five (5) years

Frequency Response: 9Hz to 23kHz ±1/-3dB

Polar Pattern: Omnidirectional

Sensitivity: 34mV/Pa (-29dBV/Pa)

Power Requirements: 24 – 48V Phantom, 10mA

Max Acoustic Input: 138dB 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)

Dimensions L x D: 165mm x 22mm (6.5 x .860 inches)

Weight: .35 lb. (160g)

M23 23kHz omnidirectional measurement microphone

M23mp 23kHz omnidirectional measurement microphone – matched pair

  • Test / Measurement
  • ADP1 1/2″ Calibrator Adapter
  • MC1 Microphone Clip
  • OMW1 Foam Windscreen

M23 Manual

M23 Data Sheet

The M23 is my daily, go-to measurement mic, for fast and accurate PA and room tuning.

Brian Stanley, Front of House Engineer