Earthworks M30 – 5Hz to 30 kHz Omnidirectional Measurement Microphone

Description

Precision-engineered omnidirectional measurement mic with ultra-flat, time-coherent frequency response from 3 Hz to 30 kHz. Designed for accurate acoustic analysis, SPL calibration, room tuning, and scientific applications. Features temperature-compensated electronics, hand-tuned calibration, and rugged stainless steel body.

Key Technical Features:

Frequency response: 3 Hz–30 kHz ±1 dB
Maximum SPL: 140 dB, distortion-free
Omnidirectional sensitivity: 34 mV/Pa (–29 dBV/Pa)
Output impedance: 65–100 Ω balanced
Self-noise: 20 dB SPL (A-weighted)
Operates on 24–48 V phantom power, 10 mA consumption
Includes microphone clip and calibrator adapter
Supplied with individual calibration chart and available electronic calibration file