Earthworks
M50 Measurement Mic
Best precision tool for professional acoustical engineers and loudspeaker designers.
This precision-engineered omnidirectional microphone is designed for highly accurate acoustical measurements. It excels in demanding applications such as high-end loudspeaker design, scientific research, and the measurement of ultrasonic or subsonic transducers. Featuring an exceptionally wide and flat frequency response from 3Hz to 50kHz, it captures sound with remarkable detail. Its consistent omnidirectional polar pattern and ability to handle up to 140dB SPL without distortion ensure reliable performance. Temperature-compensated electronics guarantee repeatable results across various environments, making it ideal for advanced audio analysis and system alignment.
$1299.00
Owner Satisfaction
4.7
/ 5
Category Rank
208
/ 3367
#208 in Microphones
Price vs Category Average
+156%
Above average
Frequency Response
350
/ Hz - kHz
Who it's for
- Acoustic engineers needing precise, reliable system calibration data
- Audio professionals requiring high-fidelity capture of subtle sonic nuances
- Facility managers seeking long-term, consistent measurement performance
Who should skip it
- Studio producers looking for versatile, general-purpose recording microphones
- Budget-conscious hobbyists prioritizing value over extreme measurement precision
- Field technicians working in rugged or high-impact environments
Performance breakdown
Frequency Accuracy
Ultra-wide 3Hz to 50kHz range captures every nuance with surgical precision.
SPL Handling
Handles 140dB inputs without distortion for high-pressure acoustic testing.
Transient Response
Lightning-fast impulse reproduction ensures highly accurate transient analysis.
Environmental Stability
Temperature-compensated electronics guarantee repeatable results across diverse testing environments.
Software Compatibility
Seamless integration with industry-standard measurement suites like SMAART and MLSSA.
Build Integrity
Rugged professional construction meets rigorous Type 1 measurement standards.
Key Specs
Frequency Response
3Hz - 50kHz
Polar Pattern
Omnidirectional
Sensitivity
34mV/Pa (-29dBV/Pa)
Power Requirements
24-48V Phantom, 10mA
Max Acoustic Input
140dB SPL
Output
XLR (pin 2+)
Output Impedance
65Ω balanced
Min Output Load
600Ω
Know before you buy
The M50 features an ultra-wide frequency response of 3Hz to 50kHz and a lightning-fast impulse response. This allows it to capture transient details and phase accuracy that standard microphones often miss, which is critical for precision loudspeaker tuning.
Yes, the M50 requires standard 24-48V phantom power to operate. It draws 10mA of current, which is compatible with most professional audio interfaces and measurement preamps.
Yes, the M50 is designed for reliability in various environments. It features temperature-compensated electronics and is rated to operate in temperatures ranging from -20°C to 60°C, ensuring your results remain consistent even when conditions fluctuate.
The M50 is designed to work seamlessly with all major industry-standard measurement software, including SMAART, MLSSA, Spectrafoo, and TEF. Its flat frequency response ensures that the data fed into your software is as accurate as possible.
The microphone is built to handle high sound pressure levels up to 140dB SPL without distortion. This makes it an excellent choice for testing high-output loudspeakers or other high-SPL acoustic environments.
Yes, the M50 is engineered for a remarkably consistent omnidirectional polar pattern. This consistency is vital for accurate spatial measurements and ensuring that off-axis sound is captured with the same integrity as on-axis sound.
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