AT831b

Cardioid Condenser Lavalier Microphone

MSRP* US$299.00
Five-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.



  • Overview
  • Features
  • Specifications
  • Downloads
  • Reviews
  • Q & A

  • Overview


    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.

  • Features


    • 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

    ELEMENTFixed-charge back plate, permanently polarized condenser
    POLAR PATTERNCardioid
    FREQUENCY RESPONSE40-18,000 Hz
    LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave
    OPEN CIRCUIT SENSITIVITYPhantom: -44 dB (6.3 mV) re 1V at 1 Pa
    Battery: -46 dB (5.0 mV) re 1V 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
    PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical
    BATTERY TYPE1.5V AA/UM3
    BATTERY CURRENT / LIFE0.4 mA / 1200 hours typical (alkaline)
    SWITCHOff, 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
    CABLE6' (1.8 m) long (permanently attached to microphone), 0.10" (2.6 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
    ACCESSORIES FURNISHEDClothing clip; AT8444 instrument adapter; AT8531 power module; AT8116 windscreen; battery; protective carrying case
    AUDIO-TECHNICA CASE STYLEM1
    Click on the chart to view the larger image
    POLAR PATTERN
    POLAR PATTERN
    FREQUENCY RESPONSE
    FREQUENCY RESPONSE



    Conditions
  • Downloads

    AT831b Specification Sheet (pdf 99.14 KB)
    AT831b Submittal Sheet (pdf 369.15 KB)
    Optional Windscreens / Mounts
  • Reviews

    REVIEW SNAPSHOT®

    by PowerReviews
    Audio-TechnicaAT831b Cardioid Condenser Lavalier Microphone
     
    4.0

    (based on 2 reviews)

    Ratings Distribution

    • 5 Stars

       

      (0)

    • 4 Stars

       

      (2)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    Reviewed by 2 customers

    Sort by

    Displaying reviews 1-2

    Back to top

    (0 of 1 customers found this review helpful)

     
    4.0

    This product has great features

    By 

    from Budapest, Hungary

    Site Member

    Pros

    • Other

    Cons

      Best Uses

        Comments about Audio-Technica AT831b Cardioid Condenser Lavalier Microphone:

        Pros: veil-free sound, good space imaging
        Cons: slight high-pitched voice absence and few glitter.
        Good value for money.

        • What best describes the environment the product was used in?:
        • Novice
        • What best describes your level of audio knowledge?:
        • Live Sound
        • How long have you used this product?:
        • Over a year
        • Reliability:
        •  
        • Audio Quality:
        •  
        • Durability:
        •  
        • Ease of Use:
        •  
         
        4.0

        Good microphone but could use more mounting options

        By 

        from S. E. Pennsylvania

        Site Member

        Pros

        • Instrument

        Cons

          Best Uses

            Comments about Audio-Technica AT831b Cardioid Condenser Lavalier Microphone:

            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.

            • What best describes the environment the product was used in?:
            • Intermediate
            • What best describes your level of audio knowledge?:
            • Studio
            • How long have you used this product?:
            • Up to a year
            • Reliability:
            •  
            • Audio Quality:
            •  
            • Durability:
            •  
            • Ease of Use:
            •  

            Displaying reviews 1-2

            Back to top

          • Q & A

            Do you have questions about this product?

            Get answers from real customers and in-house experts with AnswerBox.

            13 Questions | 13 Answers
            Displaying questions 1-10Previous | Next »
            • Q:

              Is it possible to just purchase the mic and cable on T3?

              Great mic. Is it possible to just purchase the mic and cable terminated to the T3 connector? I have quite a few ones that are staring to buzz, due to a strained cable. The power module is stiil like new, would just need to replace the rest.
              Asked on 5/27/2015 by GuyP from Ottawa, ON, Canada

              1 answer

              • A:

                Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at audio-solutions@atus.com for assistance with this.

                Answered on 5/29/2015 by AudioSolutionsSpec3
            • Q:

              Is this mic comparable to and interchangeable with, the 831?

              Client has a bad 831 and did search for replacement. He came up with "b" & "c" models.

              Does this mic come with same connector as the 831?
              Asked on 5/14/2015 by Dred from Albany NY

              1 answer

              • A:

                Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at audio-solutions@atus.com for assistance with this.

                Answered on 5/27/2015 by AudioSolutionsSpec3
            • Q:

              Is this mic compatible with the Sennheiser g3 bodypack?
              Asked on 2/11/2015 by Wiggins7 from Arlington, WA, USA

              1 answer

              • A:

                No, it is not. The AT831b is the wired version of the mic. We do offer it as a special order at an additional charge however. Order the AT831c, which is unterminated, through your local authorized a-t dealer and request a special build order for Sennheiser termination.
                Please note that we DO offer another lav mic model, the BP896cLM3 (black) or BP896cLM3-TH (beige), for use with g3 transmitters.

                Answered on 2/12/2015 by AudioSolutionsSpec1 from Stow,OH
            • Q:

              Only for guitar or also for voice?

              Just to ask if this mic is for instrument use (guitar) or if I can use it also to record voice.

              Thanks!
              Asked on 10/15/2014 by mrcmrc

              1 answer

              • A:

                Yes, it can be used for voice as well. In fact, it is one of our most popular models for spoken word applications.

                Answered on 10/20/2014 by AudioSolutionsSpec1 from Stow,OH
            • Q:

              Gooseneck Equivalent

              I have one of these mics and love the quality. I would like to get the equivalent mic in a gooseneck style. Can you give me the equivalent model number(s)?
              Asked on 12/3/2013 by Streamline from Canada

              1 answer

              • A:

                The equivalent will be the U857. However, there are many versions of the U857 that have different lengths and connections, for proper integration into your existing audio system. Please visit www.audio-technica.com to review all versions of the U857. If you have any further questions regarding the U857 and which version would work best for you, please contact audio-solutions@atus.com .

                Thanks!

                Answered on 12/12/2013 by AudioSolutionsSpec2 from Stow, OH
            • Q:

              Connecting the microphone to a recorder

              Hi, I intend to use the microphone for linguistic data collection, attached to a digital recorder. Is there any additional equipment that I will need to attach it to the recorder? (I have a SONY IC recorder)
              Asked on 9/6/2013 by sbarnes

              1 answer

              • A:

                Thank you for your inquiry. You will need a cable from the power module (XLR F) to what ever your recorder has.

                Answered on 9/16/2013 by AudioSolutionsManager from Stow, OH
            • Q:

              How do I hook this microphone up to my laptop?

              Do I need any extra cords in order to plug this mircophone into my Dell laptop?
              Asked on 1/7/2013 by Shelly from Mentor, OH, USA

              1 answer

              • A:

                You will need an XLR to 3.5mm TRS cable, like the Hosa XVM115F.

                Please make certain you use the microphone input on your computer (not the headphone output) and make certain the Windows Microphone Boost is enabled:
                http://windows.microsoft.com/en-US/windows7/Connect-a-microphone-music-player-or-other-audio-device-to-your-computer

                Thanks!

                Answered on 1/10/2013 by AudioSolutionsSpec2 from Stow, OH
            • Q:

              can one use rechargable lithiam battiers in the AT831b

              can one use rechargable lithiam battiers in the AT831b
              Asked on 9/11/2012 by dansagalyn from arlington va

              1 answer

              • A:

                Yes. However, NiMH rechargeable batteries with a high mAh rating are more-so recommended. The highest mAh ratings for NiMH batteries we've been able to find are 2650mAh and 2700mAh. Generally speaking, rechargeable batteries are not true voltage, so you may experience performance issues.

                Alkaline batteries are always preferred and recommended above rechargeable batteries.

                Answered on 9/25/2012 by AudioSolutionsSpec2 from Stow, OH
            • Q:

              Slight feedback on our system using the AT 831b

              We use this for Society meetings of about 100 people in a hall and through a Bose L1 Compact system. We get occasional and intermittent feedback which usually drops off but repeats randomly. It is not discerned by most of the audience but I would like to eradicate this problem. Do you have any suggestions?
              Asked on 7/26/2012 by CaptainPJ from United Kingdom

              1 answer

              • A:

                Thank you for your inquiry. Feedback occurs when the amplified sound from any loudspeaker reenters the sound system through a microphone and is amplified again and again, causing a loop. To avoid or lessen the likelihood of feedback, try some of these steps:

                - Keep the microphone behind the loudspeakers to minimize the sound that can reenter the microphone. If the microphone is in front of the speakers, then feedback is nearly guaranteed.

                - Your microphone has a unidirectional (cardioid) polar pattern. A cardioid microphone has its maximum rejection at the rear of the mic. Keep monitors or loudspeakers in this area of maximum rejection.

                - Place the microphone close to the sound source. When you reduce the distance between the sound source and the microphone by half, you double the sound pressure level at the microphone. This increases your gain before feedback (i.e., it allows your sound system to produce more SPL before reaching a level that would induce feedback).

                - Use an equalizer or feedback eliminator to dampen the frequencies where feedback is occuring.

                Answered on 8/7/2012 by AudioSolutionsManager from Stow, OH
            • Q:

              Will the AT831b work with a Takamine Warm Tube pre amp?

              This preamp has an RCA jack for plugging in a mic, or other pickup. Can an RCA plug replace the existing plug on the mic cable, can the cable be shortened?

              Thanks
              Asked on 4/14/2012 by Wark from Mt Morris, IL 61054, USA

              1 answer

              • A:

                Thank you for your inquiry. This probably will not work correctly. Most (all that I know of) RCA connectors are connectors are line level, unbalanced and high impedance. The output of the microphone is mic level, balanced and low impedance. If you get any sound it will probably be very low in volume and noisy.

                Answered on 4/23/2012 by AudioSolutionsManager from Stow, OH
            Displaying questions 1-10Previous | Next »

            Do you have a question about this product?