Earthworks M50 50kHz Omni Measurement Microphone

Known for its accuracy, reliability and consistency, the Earthworks M50 measurement mic offers extraordinary impulse response for when you need the very best.

The M50 is a precision engineered 50kHz omnidirectional measurement microphone ideally suited for acoustical measurements including high-end loudspeaker design and quality control, scientific research, measurements of ultrasonic or subsonic transducers, or any application where an extremely accurate free-field measurement microphone is required.

The M50's audio performance is unparalleled. It has an ultra wide flat frequency response that extends from 3Hz to 50kHz and is flat throughout the entire spectrum. Its omnidirectional polar response exceptionally consistent, providing an even coherent response a the direct and off-axis sections of the microphone capsule.

The M50 has a 140dB SPL rating without distortion and no handling noise.

With temperature compensated electronics, the M50 was built to deliver repeatable results no matter what the environment.

Lightning fast impulse response and linear phase response make the M50 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 M50 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.

Earthworks M50 Features

• 50kHz flat frequency response
• Ideally suited for acoustical measurements that require extended frequency response, including high-end loudspeaker design and quality control, scientific research, measurements of ultrasonic or subsonic transducers, or any application where an extremely accurate free-field measurement microphone is required
• Our top of the line measurement microphone with extraordinary impulse response for those who have stringent requirements and demand the very best
• Provides laboratory grade accuracy
• 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
• 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
• Re-calibration recommended every five (5) years

• M50 50kHz Omni Measurement Microphone1

• Frequency Response3Hz to 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 Impedance65Ω balanced (between pins 2 & 3)
• Min Output Load 600Ω between pins 2 & 3
• Noise 20dB SPL equivalent (A weighted)
• Dimensions (LxD)9x0.860" (229x22mm)
• Weight0.5 lb (225g)
• Operating Temp Range-20 deg C to +60 deg C ( -4 deg. F to 140 deg. F)
• Storage Temp Range-40 deg C to +80 deg C ( -40 deg. F to 176 deg. F)
• HumidityUp to 90%