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OmnidirectionalEarthworks Audio M23

Omnidirectional Pencil Condenser Microphone

The M23 is a calibrated omnidirectional condenser intended for acoustic measurement and testing applications.

The M23 uses a 6mm electret capsule, tuned to produce a flat frequency response from 9 Hz–23kHz. The mic has a high sensitivity of 30 mV/Pa, and as is characteristic of these electret capsules, relatively high self-noise of 22dBA.

The M23 is a similar design to the M30, but has a shorter body and a lower high-frequency rolloff (23kHz vs. 30kHz).

As of 2012, Earthworks measurement microphones include electronic calibration data (available via download upon product registration).

Permalink: Earthworks Audio M23


Pickup Patterns Pads & Filters
Omnidirectional (30 mV/Pa; 9 - 23kHz)
Capsule Dimensions Impedance SPL/Noise
Capsule diameter: 6mm
600 Ohms (Low) Max SPL: 142 dB
Self-noise: 22.0 dB(A)
Weight Length Max Diameter Interface(s)
160g (5.64oz) 229mm (9.02'') 22mm (0.87'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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