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Audio-Technica AT831b Cardioid Condenser Lavalier Microphone

BH #AUAT831B • MFR #AT831B
Audio-Technica
Audio-Technica AT831b Cardioid Condenser Lavalier Microphone
Key Features
  • Clip-On Lavalier Microphone
  • Great on Guitars
  • Full Rich Sound for Vocals & Instruments
  • Frequency Response: 40 Hz to 16 kHz
The Audio-Technica AT831b is a miniature cardioid lavalier microphone with a sensitivity and frequency response suitable for professional video, broadcast and sound reinforcement applications. The cardioid polar pattern is effective minimizing off-axis signal, providing high gain-before-feedback while using nearby monitors and speakers.
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Audio-Technica AT831B Overview

  • 1Description
  • 2Miniature Capsule
  • 3Cardioid Polar Pattern
  • 4High Sensitivity

The Audio-Technica AT831b is a miniature cardioid lavalier microphone with a sensitivity and frequency response suitable for professional video, broadcast and sound reinforcement applications. The cardioid polar pattern is effective minimizing off-axis signal, providing high gain-before-feedback while using nearby monitors and speakers.

The wide frequency response of 40 Hz to 16 kHz enables audio signal to be reproduced with accurate detail and minimal noise at low frequencies. The miniature capsule enables the microphone to be hidden underneath clothing, and the included windscreen protects against noise caused by plosive signals and wind.

Miniature Capsule

The miniature, unobtrusive capsule allows for easy concealment underneath clothing.

Cardioid Polar Pattern

The cardioid polar pattern is effective in minimizing audio signal at the off-axis sections of the capsule. This provides high gain-before-feedback response while using nearby monitors and speakers.

High Sensitivity

The frequency and sensitivity response of the AT831 result in transparent, pristine audio signal reproduction with low noise floor.
UPC: 042005309078

Audio-Technica AT831B Specs

TransducerPermanently Polarized Condenser
Polar PatternCardioid
Frequency Response40 Hz to 16 kHz
Low Frequency Roll-Off80 Hz, 18 dB/Octave
SensitivityPhantom: -44 dB (6.3 mV) re 1 V at 1 Pa
Battery: -46 dB (5.0 mV) re 1 V at 1 Pa
ImpedancePhantom: 200 Ohms
Battery: 270 Ohms
Maximum Input Sound LevelPhantom: 135 dB SPL, 1 kHz at 1% T.H.D.
Battery: 121 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range (Typical)Phantom: 106 dB, 1 kHz at Max SPL
Battery: 92 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio65 dB, 1 kHz at 1 Pa
Power RequirementsPhantom Power Requirements: 11 to 52 VDC, 2 mA Typical
BatteryBattery Type: 1.5 V AA/UM3
Battery Current / Life: 0.4 mA / 1200 Hours Typical (Alkaline)
SwitchOff, On-Flat, On-Roll-Off
Output ConnectorsOutput Connector (Power Module): Integral 3-Pin XLRM-type
DimensionsMicrophone (L x Diam): 1.0 x 0.4" / 25.0 x 10.2 mm
Power Module: 3.3 x 2.5 x 0.9" / 84.0 x 63.0 x 22.0 mm
Cable: 6.0' / 1.8 m Long
WeightMicrophone: 0.1 oz / 2.8 g
Power Module: 4.9 oz / 138.9 g
Packaging Info
Package Weight1.145 lb
Box Dimensions (LxWxH)10.35 x 4.45 x 1.75"

Audio-Technica AT831B Reviews

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