Audio-Technica AT831b

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.

• Clip-on lavalier mic also excels in acoustic guitar applications
• Provides crisp, full-sounding voice and instrument pickup
• Operates on battery or phantom power
• 6' (1.8 m) cable permanently attached to mic, TA3F connector at power module
• RoHS compliant-free from all substances specified in the EU directive on hazardous substances
• Also available as:
AT831R - with phantom-only power module
AT831c - less power module; includes clothing clip and windscreen only; 10' (3 m) cable, unterminated
AT831cW - less power module; includes clothing clip and windscreen only; 55" (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak® wireless systems
AT831cT5 - less power module; includes clothing clip and windscreen only; 55" (1.4 m) cable terminated with TA5F connector for ATW-U101 body-pack wireless system
SPECIFICATIONS

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 (typical)
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 REQUIREMENTS
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
OUTPUT CONNECTOR (POWER MODULE)
Integral 3-pin XLRM-type
CABLE
6' (1.8 m) long (permanently attached to microphone), 0.10" (2.6 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
ACCESSORIES FURNISHED
AT8417 clothing clip; AT8444 instrument adapter; AT8531 power module; AT8116 windscreen; battery; protective carrying case
AUDIO-TECHNICA CASE STYLE
M1

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