Earthworks M23 23 kHz Omnidirectional Measurement Microphone


  • Our Price
  • $499.00
  • Regular price MSRP: $624.00





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Don't Sacrifice Accuracy For Cost With The Earthworks M23 23 kHz Omnidirectional Measurement Microphone

The M30 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.

Performance

Known for its reliable performance, the M23 delivers unparalleled audio results at an affordable cost. It has a flat frequency response that extends from 9Hz to 23kHz, an exceptionally consistent omnidirectional polar response, 138dB SPL rating without distortion and no handling noise.

Immune to most temperature and atmospheric fluctuations, the M23 delivers reliable and repeatable results in any environment.  

Extremely fast impulse response and linear phase response make the M23 ideal for use with high-quality FFT-based real-time audio system measurement software like SMAART, SIM, REW, Electroacoustics Toolbox, FuzzMeasure and others, as well as for use in PA system alignment and loudspeaker design.

Every M23 is individually hand-tuned and tested and is delivered with its own printed frequency response chart. An Electronic Calibration File (ECF) is generated for each microphone during final testing, and can be downloaded free of charge after product registration.



  • 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)

Manufacturer: Earthworks
Model: M23
Warranty: See manufacturer website for details
SKU: I280226-N-0
UPC: 827517000558