Earthworks M30 G2 Measurement Microphone

Small-diaphragm Condenser Omnidirectional Measurement Microphone with 5Hz-30kHz Frequency Range, Case, Windscreen, and Clip

Optimized for free-field reference applications and featuring second-generation enhancements, the Earthworks M30 G2 is an omnidirectional, small-diaphragm condenser microphone designed for calibration and measurement duties. With carefully selected circuitry designed to ensure extremely low noise and distortion and a high max SPL of 140 dB, the M30 G2 delivers precise results.

The M30 G2 features a highly compact design, which is an 1.5" shorter than the G1 version. The frequency range is extremely wide, with flat-frequency capture from 5 Hz to 30 kHz. The mic is constructed from durable stainless steel, which sports an IP54 rating, making it safe in light rain or dirty environments, such as exterior movie sets. The M30 G2 includes a carrying case, a mic clip, an ADP1 calibrator adapter, a windscreen, and a mic thread adapter.

G2 Enhancements

• Reduced Phantom Power Consumption
  48V phantom power current consumption is now 7.2mA (reduced from Gen 1's 10mA). This increases wireless transmitter battery runtime as well as adding compatibility with certain audio interfaces, especially when a large number of microphones are used.
• Reduced 1 kHz Sensitivity
  1 kHz sensitivity has been reduced to -40 dBV/Pa (10mV/Pa) for better compatibility with some commonly used audio interfaces that cannot handle higher input signal levels (above 10 dBV). This is important for SPL measurement and monitoring, where the entire input signal chain (microphone, preamp, interface) should be able to handle 140 dB SPL without clipping.
• More Compact Form Factor
  M30 G2 is a little over an 1.5" shorter than Gen 1, taking up less storage space and weighing less. The iconic and proven tapered tip design remains the same as Gen 1, with the length removed from the body section.

The Professional Reference Since 1995

For thirty years, audio professionals have relied on the Earthworks M30 for their most critical measurement work

From the Lab to the Arena

Trusted by engineers at every point in the signal chain, from loudspeaker design to system tuning and alignment on tour.

Accurate, Rugged and Reliable

Outstanding impulse response with a flat (+/- 1dB) frequency response from 5 Hz to 30 kHz, housed in a stainless steel body with hardened electronics.

SPECIFICATIONS

• CAPTURE TYPE
• Microphone Type: Pre-polarized condenser
• Polar Pattern: Omnidirectional
• Diaphragm Size: 6 mm
• AUDIO PERFORMANCE
• Flat Frequency Range (+/- 1dB): 5 Hz to 30 kHz
• 1 kHz Sensitivity: -40 dBV/Pa (10 mV/Pa) +/- 2dB
• Low Frequency Cutoff (-3dB): ≤ 3 Hz
• High Frequency Cutoff (-3dB): ≥ 40 kHz
• A-weighted Self-noise: 23 dBA
• Maximum SPL (3% THD):
  P48: 140 dBSPL
  P12: 133 dBSPL
• Minimum Load Impedance: 1 kΩ
• POWER REQUIREMENTS
• P48 (48V Phantom Power): 7.2 mA
• P12 (12V Phantom Power): 4.8 mA
• PHYSICAL CHARACTERISTICS
• Construction: Machined Stainless Steel
• Dimensions (L x W): 7.0 x 0.85 Inches (177.8 x 21.8 mm)
• Weight: 0.3 lbs (0.14 kg)
• Color: Silver
• IP rating: IP54
• INCLUDED ACCESSORIES
• Carrying Case
• Calibration Chart
• MC1 Microphone Clip
• OMW2 Windscreen
• ADP1 Calibrator Adapter
• Mic Stand Thread Adapter