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EarthWorks 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.

Description

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.

  • 9Hz – 23kHz flat frequency response

  • Omnidirectional polar pattern

  • Handles up to 140dB SPL without distortion

 

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.

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)