Omnidirectional measurement microphones

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.

Our M Series measurement microphones are used by SMAART™, MLSSA™, Spectrafoo™, TEF™ and RTA in addition to acoustic measurement systems manufactured by dbx, DEQX and others. The M series meets or exceeds ANSI Type 1 and applicable IEC 61094 requirements.

The M23 is our economy model that is widely used for room measurements for recording facilities and acoustical room design and treatment. This model is widely used with SMAART™ measurement systems.

The M30BX is a 30kHz battery operated measurement microphone. Its output cable can be plugged directly into a sound card of most laptop computers making it ideal for measurements in remote locations.

The M30 is our most popular measurement microphone and is widely used by acousticians, audio equipment manufacturers and sound consultants throughout the world.

The M50 is our top of the line measurement microphone for those who require the very best. It is the microphone of choice for governmental, aerospace and specialized sound labs for making critical measurements with extended high frequency response.

M50, M30 and M30BX matched pairs come in custom, handcrafted wooden boxes

M Series models are available in matched pairs or matched groups of any number.

Electronic calibration files are available for every Earthworks microphone for an extra cost. These files can be used to import the microphone’s amplitude frequency response directly into your measurement system.

Related Accessories

ADP1 1/2″ calibrator adaptor

MC1 Standard microphone clip

MC2 Shock mount microphone clip

OMW1 Foam teardrop windscreen

OMW2 100 mph foam windscreen

ECB1 Cherry box for 2 M30 mics

EWB2 Wood box for 1 M30 or 1 M50 mic

EWB3 Wood box for 1 or 2 M30BX mics