Earthworks M30BX Battery-Powered Measurement Microphone

Earthworks M30BX Battery-Powered Measurement Microphone

Earthworks M30BX Battery-Powered Measurement Microphone

Earthworks M30BX Battery-Powered Measurement Microphone

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Expected availability: 7-14 business days

Product Highlights

  • For Large and Small Room Calibration
  • Omnidirectional Polar Pattern
  • 9 Hz to 30 kHz Frequency Response
  • Wide Pickup Area
  • Battery Powered
  • Includes 1/2" Calibrator Adapter
  • XLR to RCA Adapter
  • Microphone Clip
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This item is noncancelable and nonreturnable.

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Earthworks M30BX overview

  • 1Description

The M30BX Battery-Powered Measurement Microphone from Earthworks is a measurement microphone with an omnidirectional polar pattern for on-location acoustical measurements such as loudspeaker design and quality control, sound system setup and troubleshooting, room acoustics, or other applications where a free-field measurement microphone is required and a power source is not available.

The M30BX body opens for access to a replaceable battery which will power the unit for 300 hours of operation. It requires a 6V lithium battery (included) or four LR44 alkaline batteries. The battery is automatically powered On or Off when the XLR connection is inserted or removed, eliminating the need for a power switch and preserving battery life. Featuring a flat frequency response that extends from 9 Hz to 30 kHz, the M30BX microphone is equipped with a fast impulse response and linear phase response. This makes it suitable 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.

Additionally, every M30BX Battery-Powered Measurement Microphone is individually hand-tuned and tested and includes a 1/2" calibrator adapter, an XLR to RCA adapter, and an MC3 microphone clip.

Microphone body opens for replaceable battery access, with a battery life of 300 hours
Works with RTA apps for iPad/iPhone with TRRS to XLR mic cable (sold separately)
9 Hz to 30 kHz flat frequency response
Ideally suited for 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
Updated version of the SMAARTMIC previously offered by EAW
Omnidirectional polar pattern
Flat frequency response, fast impulse response, and natural 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
UPC: 827517140001
In the Box
Earthworks M30BX Battery-Powered Measurement Microphone
  • 1/2" Calibrator Adapter
  • XLR to RCA Connector Adapter for M30BX
  • MC3 Microphone Clip for M30BX Microphone
  • 6V Type P28 Battery
  • Limited 15-Year Warranty
  • Table of Contents
    • 1Description

    Earthworks M30BX specs

    Analog Performance
    Sound Field Mono
    Polar Pattern Omnidirectional
    Frequency Range 9 Hz to 30 kHz
    Equivalent Noise Level 20 dB A-Weighted
    Maximum SPL 140 dB SPL Peak
    Impedance 65 Ohms
    Load Impedance 600 Ohms
    Sensitivity 34 mV/Pa
    Output Connectors 1 x 3-Pin XLR
    Battery Type 1 x 2CR-1/N

    Also powered by 4 x LR44 1.5 V alkaline batteries

    Operating Voltage 6 V
    Length 8.66" / 220 mm
    Diameter 0.87" / 22 mm
    Weight 6.35 oz / 180 g
    Packaging Info
    Package Weight 1.35 lb
    Box Dimensions (LxWxH) 10.5 x 3.9 x 2.4"

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