Earthworks M23R 23kHz Reference Measurement Microphone

The Earthworks M23R Reference Measurement Microphone is accepted across the world as a standard for historically accurate and reliable acoustic measurements. Earthworks proprietary technologies allows every microphone to be manufactured to within ± 0.5dB of each other across the entire frequency operating range, ensuring that any Reference Series microphone will be matched no matter where or when you acquire it.

Includes

• Earthworks M23R
• Microphone Clip
• Calibration Adapter
• Calibration Chart

Features

• Flat frequency response, fast impulse response and an exceptionally uniform omnidirectional polar pattern
• Operates along signal lines up to 300 feet while maintaining a full and accurate frequency response without any loss of high frequencies
• Reference Series microphones require standard 24-48V phantom power at 10mA
• Comes with a protective padded fabric pouch for storage

Specifications

• Frequency Response: 3Hz - 23kHz ±0.5dB
• Polar Pattern: Omnidirectional
• Sensitivity: 36mV/Pa (-28.9dBV/Pa)
• Power Requirements: 24-48V Phantom, 10mA
• Max. Acoustic Output: 140dB SPL
• Output XLR: (pin 2+)
• Output Impedance: 65Ω balanced (between pins 2 & 3)
• Min. Output Load: 600Ω between pins 2 & 3
• Noise: 20dB SPL equivalent (A weighted)
• Operating Temperature Range: -4º to 140º F (-20º to +60º C)
• Storage Temperature Range: -40º to 176º F (-40 to +80º C)
• Humidity: Up to 90%
• Dimensions (L x D): 165 mm x 22 mm (6.25 x .860 inches)
• Weight: .5 lb. (225g)