Audio Technica U851A Cardioid Condenser Boundary Microphone

Audio Technica U851A
Audio Technica U851A

Audio Technica U851A Cardioid Condenser Boundary Microphone

Product Code: U851A

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• Ideal for sound reinforcement, professional recording and conferencing
• PivotPoint® rotating output connector
• Superior off-axis rejection for maximum gain before feedback
• Outstanding rejection of radio frequency interference (RFI)
• Small-diameter UniPoint capsule near boundary
• Operates on battery or phantom power

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.

Element Polarized condenser
Polar Pattern Half-cardioid (cardioid in hemisphere above mounting surface)
Frequency Response 30 - 20,000 Hz
Open Circuit Sensitivity Phantom: -40 dB (10.0 mV) re 1V at 1 Pa Battery: -41 dB (8.9 mV) re 1V at 1 Pa
Impedance Phantom : 200 ohms - Battery : 270 ohms
Maximum Input Sound Level Phantom: 133 dB, 1 kHz at 1% T.H.D. - Battery: 123 dB, 1 kHz at 1% T.H.D.
Switches Off, on-flat, on-roll-off
Dynamic Range Phantom: 111 dB, 1 kHz at Max SPL Battery: 101 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio 72 dB, 1 kHz at 1 Pa
Phantom Power Requirements 11-52V DC, 2 mA typical
Battery type 1.5V AA/UM3
Battery Life 0.4 mA / 1200 hours typical (alkaline)
Weight 244 g
Dimensions 4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height
Output Connector 3-pin XLRM type
Cable 25.0' (7.6 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
Accessories Included AT8531 power module; battery; soft protective pouch