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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.
- 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 silicon 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
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
- Frequency Response: 30-20,000 Hz
- Low Frequency Roll Off: 80 Hz, 18 dB/octave
- 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 SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D.
- 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 Requiremens: 11-52V DC, 2 mA typical
- Battery Type: 1.5V AA/UM3
- Battery Current Life: 0.4 mA / 1200 hours typical (alkaline)
- Switch: Off, on-flat, on-roll-off
- 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
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Condenser
Lightweight, sensitive diaphragm. Precisely and smoothly captures sound nuances. Powered by battery or phantom power supply.
Recommended Uses
Conference/Installed
Available Options
MX396C/DUAL Dual-Element 0-180 Degrees, Cardioid, back or bottom exit cable, mute output, LED input
MX396/TRI Dual-Element 90-0-90 mic, adjustable to 120-120-120 degrees, Cardioid, back or bottom exit cable, mute output, LED input
The Microflex® Multi-Element Boundary microphone delivers a unique and versatile tool for conference room installations.
Clean and simple in appearance, Multi-Element Boundary mics come in two or three element configurations, combining the coverage of multiple microphones into one small, compact package.
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Type of Transmitter UHF Frequency Agile
Input Connector Internal fitting for interchangeable capsules
Type of Microphone Electret Condenser Boundary Microphone
Polar Pattern Cardioid (Supplied)
Interchangeable Mic Heads Yes - R183B Omnidirectional, R184B Supercardioid and R185B Cardioid cartridges available
Frequency Response 50Hz to 17kHz
Battery Type/Approx. Life 9 Volt Alkaline - 7 hours based on alkaline battery
# Of Channels Over 100 channels between 692-862MHz, depending on locale
Mute Switch Programmable Touch-Sensitive Switch
Level Control Gain Adjustment Range: -6 to 34dBs
Antenna Type Internal
Display Microphone Status & Battery Life LEDs
Dimensions 3.625 x 1.8 x 5.17 (92 x 46 x 131mm) (WxHxD)
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A wide range condenser microphone with a cardioid polar pattern, the ultra-smart U891RCx is equipped with local or remote switching options. For flexible control in conference and boardroom installations, the unit's external contact closure ability allows a user to trigger an external device - a camera, for instance - from a switch on the microphone. Another ease-of-use feature: the microphone's electronic on-off switch can be set to three operating modes: touch-on/touch-off, press to talk, and press to mute. The mic is also equipped an 80 Hz low-cut UniSteep® filter to reduce pickup of low-frequency ambient noise. Its red LED status indicator can be controlled remotely. UniGuard® innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectional polar patterns; a unique rotating PivotPoint® connector changes the cable exit point - no tools required. It requires 11 to 52V DC phantom power, which operates the microphone and switch circuitry.
- Designed for surface-mount applications such as high-quality sound reinforcement, conferencing, distance learning and other demanding sound pickup situations
- Ultra-quiet electronic switch can be set to any of three operating modes: "touch-on/touch-off," "touch-to-talk" and "touch-to-mute“
- External contact closure capability permits control of remote devices from microphone switch
- External LED control allows for accurate depiction of the live status of the microphone
- PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone
- Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- Heavy die-cast case and non-slip silicon foam bottom pads minimize coupling of surface vibration to the microphone
- Low-profile design with low-reflectance black finish for minimum visibility
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
- Frequency Response: 30-20,000 Hz
- Low Frequency Roll Off: 80 Hz, 18 dB/octave
- Open Circuit Sensitivity: 34 dB (19.9 mV) re 1V at 1 Pa
- Impedance: 200 ohms
- Maximum Input Sound Level: 130 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range: 104 dB, 1 kHz at Max SPL
- Signal to Noise Ratio: 68 dB, 1 kHz at 1 Pa
- Phantom Power Requirements: 11-52V DC, 4 mA typical
- Weight: 266g
- Dimensions: 108.0mm long, 84.0mm maximum width, 23.0mm height
- Output Connector: TB5M-type
- Cable: 7.6m long, 3.2mm diameter, 5-conductor shielded cable (2 conductors under shield; 3 control wires outside shield); TA5F-type connector at microphone end, output end stripped and tinned for connection to electronic device
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Boundary-layer Microphone
The LD Systems BM1 is an electret condenser microphone with a hemispherical directional characteristic.
For micing upright and grand pianos on stage or in the studio. Additional applications in the area of conference technology, transmission of roundtable discussions and theatrical performances.
Product type
Microphones
Type
Installations
Frequency response
50 - 20000 Hz
Directivity
half ball
Nominal impedance
250 Ohm(s)
Max. SPL (1% THD @ 1kHz)
135 dB
Phantom power requierements
48 V
Microphone input
XLR (3-pin)
Width
27 mm
Height
74.5 mm
Diameter
93.5 mm
Accessories (included)
cables (Mini-XLR / XLR, 6 m)
Weight
0,345 kg
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Featuring breakthrough audio and mechanical design innovations, the phantom-powered U851R offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. It accepts interchangeable condenser elements - available for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851R is equipped with self-contained electronics, eliminating the need for an external power module.
- 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)
- Self-contained electronics eliminate need for external power module
- Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance
- Heavy die-cast case and non-slip silicon foam bottom pads minimize coupling of surface vibration to the microphone
- Low-profile design with low-reflectance finish for minimum visibility
- Available in two colors: black (U851R) and white (U851RW)
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
- Frequency Response: 30-20,000 Hz
- Low Frequency Roll Off: 80 Hz, 18 dB/octave
- Open Circuit Sensitivity: 34 dB (19.9 mV) re 1V at 1 Pa
- Impedance: 200 ohms
- Maximum Input Sound Level: 134 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range: 108 dB, 1 kHz at Max SPL
- Signal to Noise Ratio: 68 dB, 1 kHz at 1 Pa
- Phantom Power Requiremens: 11-52V DC, 4 mA typical
- Switch: Flat, roll-off
- Weight: 9.2 oz (262 g)
- Dimensions: 4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height
- Output Connector: TB3M-type
- Cable: 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors
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