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 Shure MX150 Subminiature Lavalier Microphone is a subminiature, multi-positioned clip-on microphone well suited for broadcast operation, sermons, presentations, public address and much more. This version includes the RK100PK XLR in-line preamplifier for use with standard XLR connections in mixers, recorders, mic-pres, etc. Shure's CommShield technology makes the MX150 impervious to noise caused by cell phones, PDAs, WiFi and other RFI. The microphone ships with a snap-fit foam windscreen and multi-position tie clip with an integrated cable management system that minimizes noise without increasing cable strain and tension.

Low-profile, cost efficient clip-on microphone for applications including houses of worship, lecturers, etc. Connects to AKG bodypack transmitters.

The CK 99 L provides a natural sound, with a slight rise above 10 kHz for added clarity. Its cardioid polar pattern and bass rolloff combine to suppress unwanted ambient noise.

Cardioid polar pattern
eliminates noise from the rear

125° pickup angle
for inexperienced or very vivacious talkers

Small housing and durable metal clip
for inconspicuous, secure mounting

General	Audio Frequency bandwidth 15 to 18000 Hz Sensitivity 8.8 mV/Pa Equivalent Noise Level 34 dB-A Signal to Noise 60 dB-A Electrical Impedance 200 Ohms Recommended Load Impedance 2000 Ohms
Polar Patterns	Cardioid
Powering Interface	Voltage 1.5 to 10 V Current 2 mA
Audio Output	Type Mini XLR Gender Female Contacts 3-pin
Design	Finish matte black
Dimensions / Weight	Height 23 mm Diameter 8 mm Net Weight 2.5 g

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)