Audio Technica AT851A Unidirectional Condensor Mic
Audio Technica AT851A Unidirectional Condenser Microphone
The AT851A is a wide-range condenser microphone with a hemi-cardioid (half-space cardioid) polar pattern. It is useful in surface-mounted applications such as high-quality sound reinforcement, professional recording, television, and other demanding sound pickup situations. Its small size makes the AT851A ideal for use in applications where minimum visibility is required.
Features:
- Designed for surface-mount applications requiring high-quality sound pickup
- Extended frequency response and uniform cardioid (120°) polar pattern
- Heavy die-cast case and rubber bottom pad minimize coupling of surface vibration to the microphone
- Operates on battery or phantom power
- Low-profile design for minimum visibility
- Also available as: AT851WA in white, AT851CW in black, less power module; 29.5″ (0.75m) cable terminated with locking 4-pin connector for A-T UniPak® wireless systems
Specifications:
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Cardioid
- Frequency Response: 30-20,000Hz
- Low Frequency Roll Off: 80Hz, 18dB/octave
- Open Circuit Sensitivity:
- PHANTOM: -44dB (6.3mV) re 1V at 1 Pa
- BATTERY: -45dB (5.6mV) re 1V at 1 Pa
- Maximum Input Sound Level:
- PHANTOM: 135dB SPL, 1kHz at 1% T.H.D.
- BATTERY: 121dB SPL, 1kHz at 1% T.H.D.
- Dynamic Range:
- PHANTOM: 108dB, 1kHz at Max SPL
- BATTERY: 94dB, 1kHz at Max SPL
- Signal-to-Noise Ratio: 67dB, 1kHz at 1 Pa
- Phantom Power Requirements: 9-52V DC, 2mA typical
- Battery Type: 1.5V AA/UM3
- Battery Current/Life: 0.4mA / 1200 hours typical (alkaline)
- Switches: Off, on-flat, on-roll-off
- Weight (Microphone): 4.2oz (120 g)
- Weight (Power Module) 5.2oz (147 g)
- Cable: 25′ (7.6m) long, 0.13″ (3.2mm) diameter, 2-conductor, shielded, with TA3F connectors
- Dimensions (Power Module): 3.27″ (83.0mm) H x 2.48″ (63.0mm) W x 0.87″ (22.0mm) D
- Dimensions (Microphone): 2.52″ (64.0mm) maximum width, 3.60″ (91.5mm) maximum length, 0.63″ (16.0mm) height
- Output Connector (Power Module): Integral 3-pin XLR M-type
- Accessories Included: AT8531 power module; battery; soft protective pouch
