Audio-Technica U851A
Cardioid Condenser Boundary Microphone (requires power module, included)

U851A

Offering outstanding Audio-Technica sound for surface-mount applications, the U851A features a PivotPoint rotating output connector, UniSteep filter and UniGuard RFI-shielding technology. This battery- or phantom-powered condenser microphone accepts interchangeable condenser elements - available for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. Its heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. With superior off-axis rejection and maximum gain-before-feedback, this professional microphone sets audio-quality standards in challenging acoustic environments.

Features

• Designed for surface-mount applications such ashigh-quality sound reinforcement, professional recording, television,conferencing and other demanding sound pickup situations
• PivotPoint rotating output connector allows cable toexit from either the rear or the bottom of the microphone
• Superior off-axis rejection for maximum gain beforefeedback
• UniGuard RFI-shielding technology offers outstandingrejection of radio frequency interference (RFI)
• UniSteep filter provides a steep low-frequencyattenuation to improve sound pickup without affecting voice quality
• Small-diameter UniPoint capsule near boundaryeliminates phase distortion and delivers clear, high-output performance
• Heavy die-cast case and non-slip silicon foam bottompads minimize coupling of surface vibration to the microphone
• Low-profile design with low-reflectance black finishfor minimum visibility
• Operates on battery or phantom power

Specifications

• Element: Fixed-charge back plate, permanentlypolarized condenser
• Polar Pattern: Half-cardioid (cardioid in hemisphereabove mounting surface)
• Frequency Response: 30-20,000 Hz
• Low Frequency Roll-Off: 80Hz, 18dB/octave
• Impedance: 200 ohms (Phantom); 270 ohms (battery)
• Max Input Sound Level: 133 dB SPL (Phantom); 123 dBSPL (battery)
• Dynamic Range (Typical): 111 dB (Phantom); 101 dB(battery)
• Signal-to-Noise Ratio: 72 dB
• Phantom Power Requirements: 11-52V DC
• 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): 8.6 oz
• Weight (power module): 4.9 oz
• Dimesions (microphone, L x Max W x H): 4.25" x 3.31"x 0.91"
• Dimensons (power module, H x W x D): 3.31" x 2.48" x0.87"
• Output Connector (power module): Integral 3-pinXLRM-type
• Cable: 25' long (permanently attached to microphone), 0.13" diameter, 2-conductor, shielded cable with TA3F-type connector
• OptionalInterchangeable Elements: UE-H hypercardioid (100°); UE-O omnidirectional (360°)
• Furnished Accessories: AT8531 power module; battery; soft protectivepouch

Our Part #  U851A