Earthworks M30BX Microphone

Earthworks M30BX Battery Powered Omnidirectional Measurement Microphone Details
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.

Earthworks M30BX Battery Powered Omnidirectional Measurement Microphone Features

Microphone body opens for replaceable battery access, with a battery life of 300 hours
Works with RTA apps by using iPad / iPhone to TRRS to XLR mic cable
30kHz flat frequency response
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 and portability is important or a power source is not readily available
Improved version of the SMAARTMIC™ previously offered by EAW
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
Operating Temp Range: -10 deg C to +40 deg C ( 14 deg. F to 104 deg. F)
Storage Temp Range: -20 deg C to +50 deg C ( -4 deg. F to 122 deg. F)

Earthworks M30BX Battery Powered Omnidirectional Measurement Microphone Applications

Foley Recording
Measurement
Room/Ambient

Earthworks M30BX Battery Powered Omnidirectional Measurement Microphone Specifications

Frequency Response: 9Hz to 30kHz ±1/-3dB
Polar Pattern: Omnidirectional
Sensitivity: 50mV/Pa
Power Requirements: 6V Battery Type P28 (2CR-1/3N, 4LR44 or equivalent)
Max Acoustic Input: 138dB SPL
Output: XLR (pin 2+)
Min Output Impedance: 600Ω
Noise: 22dB SPL equivalent (A weighted)
Dimensions L x D: 220mm x 22mm (8.65 x .860 inches)
Weight: .4 lb. (180g)