NTI M4261 Measurement Microphone

The M4261 is a meticulously calibrated, omni-directional class 2 measurement microphone that operates on 48 V Phantom power. It exhibits exceptional linearity across a broad dynamic range spanning from 27 dB SPL to 144 dB SPL.

These microphones are powered by 48 V phantom power and come equipped with an electronic data sheet. The XL2 Analyzer's Automated Sensor Detection (ASD) feature automatically retrieves this data, including microphone model and calibration information. This streamlines the setup process and ensures precise measurements.

The microphone bodies house the preamplifier, delivering a combination of high dynamic range, wide frequency response, and low noise performance. The M4261 microphones can be connected to the XL2 Audio and Acoustic Analyzer using the ASD Cable, facilitating measurements in remote locations or minimizing acoustic reflections.

NTI M4261 Features:

• Omni-directional, free-field microphone
• Phantom power 48 VDC
• Electronic data sheet installed
• Frequency range 5 Hz - 20 kHz
• Individual frequency response available as Excel-data
• Optional calibration certificate

NTI M4261 Specifications:

• Consisting of: M4261 microphone with permanently installed capsule
• Microphone Type: Omnidirectional, pre-polarized condenser, free field microphone
• Classification: Class 2
• Capsule/Transducer: 1/4" permanently installed
• Flatness Tolerance Bands: +1/-4.5 dB @ 5 Hz - 20 Hz; ±1.5 dB @ >20 Hz - 4 kHz; ±3 dB @ >4 kHz - 10 kHz; ±4.5 dB @ >10 kHz - 16 kHz; ±5 dB @ >16 kHz - 20 kHz
• Frequency Range: 5 Hz - 20 kHz
• Residual Noise Floor: 27 dB(A)
• Maximum SPL: 142 dBSPL
• Sensitivity: 36 dBV/Pa ±3 dB (16 mV/Pa)
• Temperature Coefficient: < ±0.02 dB / °C
• Temperature Range: 32°F to 104°F
• Pressure Coefficient: -0.04 dB / kPa
• Influence of Humidity (non-condensing): < ±0.4 dB
• Humidity: 5% to 90% RH, non-condensing
• Output Impedance: 100 Ohm balanced
• Power Supply: 48 VDC phantom power, 3 mA typical
• Connector: Balanced 3-pole XLR
• Dimensions (Diameter x Length): 0.8" x 5.9"
• Weight: 2.39 oz
• Environmental Protection: IP51