| Audio Technica U851A Cardioid Condenser Boundary Microphone Details
The Audio Technica U851A Cardioid Condenser Boundary Microphone Offers outstanding Audio-Technica sound for surface-mount applications.The Audio Technica U851A Cardioid Condenser Boundary Microphone 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.
Audio Technica U851A Cardioid Condenser Boundary Microphone Features
Audio Technica U851A Cardioid Condenser Boundary Microphone Specifications
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Element: Fixed-charge back plate, permanently polarized condenser
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Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
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Frequency Response: 30-20,000 Hz
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Low Frequency Roll-Off: 80 Hz, 18 dB/octave
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Open Circuit Sensitivity: Phantom: Phantom: Phantom: –40 dB (10.0 mV) re 1V at 1 Pa; Battery: –41 dB (8.9 mV) re 1V at 1 Pa
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Impedance: Phantom: Phantom: 200 ohms; Battery: 270 ohms
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Maximum Input Sound Level: Phantom: Phantom: Phantom: 133 dB SPL, 1 kHz at 1% T.H.D.
Battery: 123 dB SPL, 1 kHz at 1% T.H.D.
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Dynamic Range (typical): Phantom: 111 dB,1 kHz at Max SPL, Battery: 101 dB, 1 kHz at Max SPL
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Signal-To-Noise Ratio: 72 dB, 1 kHz at 1 Pa
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Phantom Power Requirements: 11-52V DC, 2 mA typical
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Battery Type: 1.5 AA/UM3
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Battery Current / Life: 0.4 mA / 1200 hours typical (alkaline)
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Switch: Off, on-flat, on-roll-off
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Weight (Microphone): 8.6 oz (244 g)
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Weight (Module): 4.9 oz (139 g)
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Dimensions (Microphone): 4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0) height
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Dimensions (Power Module): 3.31" (84.0 mm) H x, 2.48" (63.0 mm) Wx 0.87" (22.0 mm) D
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Output Connector (Power Module): Integral 3-pin XLRM-type
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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
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Accessories Furnished: AT8531 power module; battery; soft protective pouch
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