Earthworks M23 23kHz Omni Measurement Microphone

23kHz omni measurement

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.

• 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%
• Re-calibration recommended every five (5) years

Earthworks M Series measurement microphones have become the accepted standard for reliable measurement and reference. They are accurate in the time and frequency domain and have exceptionally uniform polar response. They feature flat free-field frequency response, fast impulse response, and are remarkably stable with respect to temperature changes, meeting or exceeding Type 1 specifications. Our M Series measurement microphones are used and recommended by SMAART™, MLSSA™, Spectrafoo™, TEF™, RTA in addition to acoustic measurement systems manufactured by dbx, Rational Acoustics, DEQX and others.

Consultants and engineers have requested a high quality, lower cost version of our popular M30. The M23 is our answer to this request. The M23 provides a frequency response from 9Hz to 23kHz, and will handle 140dB SPL. In comparison, the M30 offers a frequency response from 5Hz to 30kHz. The M23 also has a shorter body length than the M30. For those who are looking for a lower cost alternative to our popular M30, the M23 is it. The M23 is a direct replacement for the Earthworks manufactured model S30 SMAART™ microphone offered by Loud Technologies, Inc.

The Earthworks line of measurement microphones (with exception to the M30BX, which is battery operated) require standard 48V phantom power and up to 10mA of current (which is within the industry phantom power standard). 10mA of current is required to supply our high current, bipolar Class A amplifier within the microphone that is made with all discrete components, with no capacitors in the signal path providing excellent phase response. This also allows the microphone(s) to feed long signal lines up to 300 feet (91m) and maintain the full frequency response of the microphone at the other end of the line, without any loss in high frequencies.

The M23 comes in a protective carton with a custom die-cut foam insert and its own individual calibration chart. For those who desire electronic calibration files to interface with their software, these are available at no cost. In addition, any number of microphones can be matched for a nominal fee. The M23 requires standard 48V phantom power for operation.

The M23 is the ideal choice for those who desire a high-quality reliable measurement microphone for room measurements and sound system setup. The M23 will provide the same excellent polar accuracy as our higher-priced measurement microphones.