Audio Technica AT831b Miniature cardioid condenser 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
• 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

• 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 Requiremens: 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
• 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: AT8417 clothing clip; AT8444 instrument adapter; AT8531 power module; AT8116 windscreen; battery; protective carrying case

The smartLav+ is a broadcast-grade wearable microphone designed for use in a wide range of film, television and broadcast scenarios, or wherever broadcast quality audio is required in a discreet, portable format without the complication and expense of additional wireless equipment.

With the smartLav+ the user simply mounts the microphone on the talent, connects it to a smartphone or tablet headset jack and records via the RØDE Rec app for iOS, or any other audio app of their choice.

By employing a professional quality omni-directional condenser capsule the smartLav+ picks up sound equally from all around the microphone, allowing for versatility when mounting and ensuring a high degree of user-friendly operation.

A foam pop shield is supplied to minimise wind noise and vocal plosives (hard ʽbʼ, ʽtʼ and ʽpʼ sounds), as well as a durable mounting clip with in-built cable management. Its Kevlar® reinforced cable ensures that you never stretch or snap your microphone under normal usage conditions.

The smartLav+ is compatible with any audio app that accepts input from the headset connection, however it has been designed to pair perfectly with RØDEʼs RØDE Rec app for Apple iOS devices. RØDE Rec turns the userʼs iOS device into a fully-featured field recorder, with a wide range of equalisation presets to suit various recording situations, in addition to professional editing functions and the ability to publish to SoundCloud and Dropbox direct from the app.

Acoustic Principle    Pressure Gradient
Active Electronics    JFET
Capsule    0.10“
Polar Pattern     [Omnidirectional - picks up all sides equally]
Address Type    End
Frequency Range    20Hz - 20kHz (selected HPF @ 0)
Output Impedance    0Ω
Maximum SPL    110dB SPL (@ 1kHz, 1% THD into 1KΩ load)
Maximum Output Level    189.0dBu (@ 1kHz, 1% THD into 1KΩ load)
Sensitivity    -35.0dB re 1 Volt/Pascal (17.80mV @ 94 dB SPL) +/- 2 dB @ 1kHz
Equivalent Noise Level (A-weighted)    27dB-A
Weight     6.00gm
Dimensions    1180.00mmH x 4.50mmW x 4.50mmD
Dimensions    1180.00mmH x 4.50mmW x 4.50mmD
Output     TRRS Output
Warranty     1 year

Transducer     Electret condenser
Polar Pattern     Cardioid
Frequency Response     20 to 20,000Hz
Output Impedance     165.5 Ω
Sensitivity     -39.0 dBV/Pa (11.0 mV)
Max Input Sound Level (SPL)     1000 Ω load: 129.5 dB SPL; 2500 Ω load: 134.5 dB SPL
Signal-to-Noise Ratio     57.0 dB
Dynamic Range     @1kHz
1000 Ω: 92.5 dB SPL; 2500 Ω: 97.5 dB SPL
Self Noise     37.0 dB
(equivalent SPL, A-weighted, typical)
Clipping Level     1000 Ω load: 1.0 dBv; 2500 Ω load: -4.5 dBv
Operating Temperature     Operating: 0 to 135°F (-18 to 57°C)
Storage: -20 to 165°F (-29 to 74°C)
Polarity     XLR: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Power Requirements     11-52VDC phantom power (IEC-61938), Dimensions (LxDiameter)     Length: 5' (1.52m)
Diameter: 0.23" (5.8mm)
Weight     4.3 oz (121 g)

This miniature condenser microphone achieves full-sounding pickup and is known for outstanding consistency and dependable performance. Supplied with both a clothing clip and guitar mount, it provides natural and articulate vocal reproduction when used as a clip-on lavalier and excels in pickup of acoustic guitar. The PRO70 is designed to make music and speech clearly and comfortably audible, yet never draw attention to itself or its operation. The microphone is equipped with a low-frequency roll-off switch that allows for reduced pickup of room noise. The versatile PRO70 may be powered by either battery or phantom power. Its cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of the desired sound source.

Miniature condenser microphone is ideal for both vocal and acoustic guitar applications
Natural and articulate vocal reproduction when used as a clip-on lavalier - clothing clip included
Excels in pickup of acoustic guitar with included instrument adapter
Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source
Switchable low-frequency roll-off
Corrosion-resistant contacts from gold-plated XLRM-type connector
Operates on battery or phantom power
6\' (1.8 m) cable permanently attached between microphone and power module

Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Cardioid
Frequency Response: 100-14,000 Hz
Low Frequency Roll Off: 80 Hz, 8 dB/octave
Open Circuit Sensitivity: Phantom: -45 dB (5.6 mV) re 1V at 1 Pa Battery: -45 dB (5.6 mV) re 1V at 1 Pa
Impedance: Phantom: 200 ohms Battery: 200 ohms
Maximum Input Sound Level: Phantom: 123 dB SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range: Phantom: 96 dB, 1 kHz at Max SPL Battery: 96 dB, 1 kHz at Max SPL
Signal to Noise Ratio: 67 dB, 1 kHz at 1 Pa
Phantom Power Requiremens: 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
Output Connector: Integral 3-pin XLRM-type
Cable: Integral 6\' (1.8 m), permanently attached between microphone and power module
Accessories: AT8411 clothing clip; AT8444 instrument adapter; power module; windscreen; battery; soft protective pouch

 Shure SLX14 Instrument Wireless System Features:

    SLX4 Wireless Receiver:
    Automatic Frequency Selection
    Automatic Transmitter Setup
    960 Selectable frequencies across 24MHz bandwidth
    Detachable 1/4 wave antennas
    Microprocessor-controlled diversity
    RF presence LED
    5-segment audio meter
    Multi-function, backlit LCD
    Low battery indicator
    Frequency and power lockout
    Rugged metal chassis
    Volume control on rear of unit
    1/2 rack design
    Furnished rack hardware
    Non-slip bumpers for use out of rack
    XLR and 1/4" outputs

    SLX1 Bodypack Transmitter
    Automatic Transmitter Setup
    Backlit LCD with timeout feature
    Frequency and power lockout
    3-segment battery fuel gauge
    2 AA batteries (included) provide 8 hours of continuous use
    518 - 782 MHz operating range



Shure SLX14 Instrument Wireless System Specifications:

    SLX4 Wireless Receiver:
    Audio Output Level (ref. ± 38kHz deviation with 1kHz tone): XLR connector (into 600 Ohm load): —13dBV; 1/4" connector (into 3000 Ohm load): —2dBV
    Output Impedance: XLR connector: 200 Ohms; 1/4" connector: 1kohms
    XLR output: Impedance balanced; Pin 1: Ground; Pin 2: (+); Pin 3: (-)
    Sensitivity: —105 dBm for 12 dB SINAD, typical
    Image Rejection: >70 dB, typical
    Power Requirements: 12—18 Vdc at 150 mA, supplied by external power supply
    Operating Range Under Typical Conditions: 300 ft. (100m)
    Note: Actual range depends on RF signal absorption, reflection, and interference
    Audio Frequency Response (+/— 2 dB): Minimum: 45 Hz: Maximum: 15 kHz
    Note: Overall system frequency depends on microphone element.
    Total Harmonic Distortion (ref. +/— 38 kHz deviation, 1 kHz tone): 0.5%, typical
    Dynamic Range: >100 dB A-weighted
    Operating Temperature Range: —18 degree C (0 degree F) to +50 degree C (+122 degree F)
    Note: battery characteristics may limit this range
    Dimensions (H x W x D): 1.65 x 7.76 x 5.28 in., (42 x 197 x 134 mm)
    Weight: 1 lb. 13 oz. (816 g )
    Housing: Galvanized steel
    Transmitter Audio Polarity: Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with
    respect to pin 3 of low impedance output) and the tip of the high impedance 1/4-inch output.
    Logic Connections: Pin 1: Logic output, Transmitter Mute Status. Mute=low (0 V). Sinks up to 100 mA. Absolute maximum -0.7 to 5.5V DC; Pin 2: Logic ground; Pin 3: Logic output, Battery Status. Good=low (0 V). Sinks up to 100 mA; Absolute maximum -0.7 to 5.5V DC

    SLX1 Bodypack Transmitter
    Audio Input Level: -10 dBV maximum at mic gain position, +10 dBV maximum at 0 dB gain position, +20 dBV maximum at -10 dB gain position
    Gain Adjustment Range: 30dB
    Input Impedance: 1 Mohms
    RF Transmitter Output: 30 mW maximum (dependent on applicable country regulations
    Dimensions (H x W x D): 4.25 x 2.50 x 0.75 in. (108 x 64 x 19 mmD)
    Weight: 81 grams (3 oz.) without batteries
    Housing: Molded ABS case
    Power Requirements: 2 "AA" size alkaline or rechargeable batteries
    Battery Life: >8 hours (alkaline)

• Miniature MU-55 is inconspicuous, lightweight and waterproof.
• Supplied with 4-pin mini XLR and fits all MIPRO bodypack transmitters.
• Featuring a smooth, warm, natural sound.
• Available in black or beige colors.
• Ideal for theater, houses of worship and educational applications.