Overview
Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone Superior off-axis rejection for maximum gain before feedback UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI) UniSteep® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality Small-diameter UniPoint capsule near boundary eliminates phase distortion and delivers clear, high-output performance Heavy die-cast case and non-slip silicone foam bottom pads minimize coupling of surface vibration to the microphone Low-profile design with low-reflectance black finish for minimum visibility Operates on battery or phantom power
Features
- 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
- Tech Specs
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Technical Specification
SKU U851 Frequency Response 30-20,000 Hz Impedance Phantom: 200 ohms Battery: 270 ohms 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 AT8531 power module; battery; soft protective pouch Element Fixed-charge back plate, permanently polarized condenser Polar Pattern Half-cardioid (cardioid in hemisphere above mounting surface) OPTIONAL INTERCHANGEABLE ELEMENTS "H hypercardioid (100°); UE-O omnidirectional (360°)" LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave Open Circuit Sensitivity –40 dB (10.0 mV) re 1V at 1 Pa Battery: –41 dB (8.9 mV) re 1V at 1 Pa Output connector Integral 3-pin XLRM-type Battery Type 1.5V AA/UM3 Battery Life 0.4 mA / 1200 hours typical (alkaline) Phantom Power Requirements 11-52V DC, 2 mA typical Maximum Input Sound Level Phantom: 133 dB SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D. Signal to Noise Ratio 72 dB, 1 kHz at 1 Pa 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 Dimensions "DIMENSIONS (MICROPHONE) 4.25"" (108.0 mm) long, 3.31"" (84.0 mm) maximum width, 0.91"" (23.0 mm) height DIMENSIONS (POWER MODULE) 3.31"" (84.0 mm) H x 2.48"" (63.0 mm) W x 0.87"" (22.0 mm) D" - Related Products
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