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AT831b Specification Sheet
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AT831b Cardioid Condenser Lavalier Microphone
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
- 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
| 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 | Clothing clip; AT8444 instrument adapter; AT8531 power module; AT8116 windscreen; battery; protective carrying case |
| AUDIO-TECHNICA CASE STYLE | M1 |
| SPECIFICATION GRAPHS | ||
|---|---|---|
| Click on the chart to view the larger image | ||
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Conditions
AT831b Cardioid Condenser Lavalier Microphone
Overall ratingÂ
Rating breakdown 2 reviews
5 Stars
0
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
ReliabilityÂ
4.5
/
5
Audio QualityÂ
4
/
5
DurabilityÂ
3.5
/
5
Ease of UseÂ
3.5
/
5
Share this product
2
2
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.<br/>Overall ratingÂ
Rating breakdown 2 reviews
5 Stars
0
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
ReliabilityÂ
4.5
/
5
Audio QualityÂ
4
/
5
DurabilityÂ
3.5
/
5
Ease of UseÂ
3.5
/
5
Share this product
Product Reviews
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Ratings summary
Overall ratingÂ
Rating breakdown 2 reviews
5 Stars
0
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
ReliabilityÂ
4.5
/
5
Audio QualityÂ
4
/
5
DurabilityÂ
3.5
/
5
Ease of UseÂ
3.5
/
5
Share this product
Advanced filters
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Overall ratingÂ
This product has great features
PostedNovember 2, 2011
from Budapest, Hungary
Environment:Live Sound
Expertise:Novice
How Long:Over a year
ReliabilityÂ
4
/
5
Audio QualityÂ
4
/
5
DurabilityÂ
3
/
5
Ease of UseÂ
4
/
5
Pros: veil-free sound, good space imaging
Cons: slight high-pitched voice absence and few glitter.
Good value for money.
Cons: slight high-pitched voice absence and few glitter.
Good value for money.
Pros Other
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Overall ratingÂ
Good microphone but could use more mounting options
PostedOctober 24, 2011
from S. E. Pennsylvania
Environment:Studio
Expertise:Intermediate
How Long:Up to a year
ReliabilityÂ
5
/
5
Audio QualityÂ
4
/
5
DurabilityÂ
4
/
5
Ease of UseÂ
3
/
5
I bought this microphone to use on acoustic guitar. The included sound hole mount works and the adjustment allows for some limited tonal adjustments. Audio-Technica should consider offering additional instrument mounts for this quality microphone such as the 4099G mount offered by DPA that positions the microphone over the fretboard of the guitar for more natural sound. I prototyped an alternative such mount and the results are encouraging.
Pros instrument
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AT831b : Cardioid Condenser Lavalier Microphone
