Earthworks M23

The Earthworks 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.

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. The M Series has become the accepted standard for affordable, reliable reference and measurement microphones that are accurate in the time domain and frequency response. They are remarkably stable with respect to temperature and atmospheric conditions and are optimized for clean, very fast impulse performance providing accurate wideband response with virtually no handling noise.

Benefits for Measurement

• Extended flat frequency response
• Near-perfect omnidirectional polar pattern
• Fast impulse response
• Meets or exceeds ANSI Type 1 and applicable IEC 61094 requirements
• Reliable performance

The Earthworks Measurement Series has become the accepted standard for affordable, reliable reference and measurement microphones that are accurate in the time domain and frequency response. They are remarkably stable with respect to temperature and atmospheric conditions and are optimized for clean, very fast impulse performance providing accurate wideband response with virtually no handling noise. They are ideally suited for on-location 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.

Features

• 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
• Requires 48V Phantom Power
• 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: -20 deg C to 50 deg C ( -4 deg. F to 122 deg. F)
• Humidity: Up to 90%

Models

M23

• 9Hz – 23kHz omnidirectional measurement microphone

M23mp

• Matched pair of M23’s

Technical Specifications:

• Frequency Response: 9Hz to 23kHz ±1/-3dB
• Polar Pattern: Omnidirectional
• Sensitivity: 36mV/Pa (-29dBV/Pa)
• Power Requirements: 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)
• Dimensions L x D: 165mm x 22mm (6.5 x .860 inches)
• Weight: .35 lb. (160g)

Download User Manual for Earthworks 23kHz Omni Measurement Microphone

Download Data Sheet for Earthworks 23kHz Omni Measurement Microphone

Testimonials:

“Over the years we have all used various measurement mics but it’s evident that Earthworks have become the standard for serious measurement work as they’re recommended by numerous measurement companies such as Smaart and they’re the best way to go for the future.”
– Andrew Burch

“The M23 is my daily, go-to measurement mic, for fast and accurate PA and room tuning.”
– Brian Stanley, Front of House Engineer