M30BX
Battery powered M30 with built-in preamp
The M30 is a very cost effective reference microphone for SMAART™, MLSSA™, Spectrafoo™, TEF™ & RTA and all “audio band” measurements. It has a flat frequency response, fast impulse response and exceptional polar characteristics. The M30BX meets or exceeds ANSI Type 1 and applicable IEC 61094 requirements.
Earthworks M30BX is 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.
Microphone body opens for replaceable battery access, with a battery life of 300 hours.
Each microphone is delivered with its own calibration chart providing its individually measured open-circuit sensitivity for both gain positions, and the frequency response curve.
Electronic calibration files can be used to import the M30BX’s amplitude frequency response directly into your measurement system.










"I have finally found microphones that truly capture the way that my drums sound, even to the smallest...