Audio Technica AT831B

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Audio Technica AT831B Cardiod Lavalier Mic

This clip-on lavalier mic provides crisp, full-sounding voice pickup and excels as an instrument mic, especially for pickup of acoustic guitar with included AT8444 guitar adapter.

It offers excellent gain before feedback and suppression of background noise.

An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. It operates on battery or phantom power.

Element

Fixed-charge back plate, permanently polarized condenser

Polar Pattern

Cardioid

Frequency Response

40-18,000 Hz

Low Frequency Roll Off

80 Hz, 18 dB/octave

Open Circuit Sensitivity

Phantom: -44 dB (6.3 mV) re 1V at 1 Pa

Battery: -46 dB (5.0 mV) re 1V at 1 Pa

Impedance

Phantom: 200 ohms

Battery: 270 ohms

Maximum Input Sound Level

Phantom: 135 dB SPL, 1 kHz at 1% T.H.D.

Battery: 121 dB SPL, 1 kHz at 1% T.H.D.

Dynamic Range

Phantom: 106 dB, 1 kHz at Max SPL

Battery: 92 dB, 1 kHz at Max SPL

Signal To Noise Ratio

65 dB, 1 kHz at 1 Pa

Phantom Power Requirments

11-52V DC, 2 mA typical

Battery Type

1.5V AA/UM3

Battery Current/Life

0.4 mA / 1200 hours typical (alkaline)

Switch

Off, on-flat, on-roll-off

Weight Microphone

0.1 oz (2.8 g)

Weight (Power Module)

4.9 oz (139 g)

Dimensions (Microphone)

0.98 (25.0 mm) long,

0.40 (10.2 mm) diameter

Dimensions (Power Module)

3.31 (84.0 mm) H x

2.48 (63.0 mm) W x

0.87 (22.0 mm) D x