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Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891Rx cardioid condenser boundary microphone features a touch-sensitive on-off switch that can be set to three modes: press-on/press-off, press to talk, and press to mute. The phantom-powered microphone is equipped with a unique PivotPoint® rotating output connector and an LED status indicator. UniGuard® innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectional polar patterns; an 80 Hz low-cut UniSteep® filter reduces pickup of low-frequency ambient noise. The microphone's heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. The unit's self-contained electronics eliminate the need for an external power module.
- 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: 264 g
- Dimensions: 108.0 mm long, 84.0 mm maximum width, 23.0 mm height
- Output Connector: TB3M-type
- Cable: 7.6 m long, 3.2 mm diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors
- Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing 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“
- 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)
- 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 (U891Rx) and white (U891RWx)
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The e 912 is a pre-polarized condenser boundary microphone with
half-cardioid pick-up pattern. Its acoustic properties have been
optimized for instruments, vocals and speech. The e 912 is an ideal
choice for pianos, theatre and opera productions, conference applications,
altars and lecterns.To optimally match the installation environment,
the e 912 is available in black or creme white.
Features
Frequency response and sensitivity optimized for picking up instruments,
vocals and speech
Unobtrusive, flat housing
Extremely rugged and step-resistant
Shock-absorbing rubber base
Mounting slots for table installation
Gold-plated XLR connector
Integrated pre-amp
Delivery Includes
e 912 Microphone
Pouch
User manual
Technical Data
Transducer principle (Microphone) permanently polarized condenser
Pick-up pattern half-cardioid
Sensitivity in free field, no load (1kHz) 10 mV/Pa
Max. Sound pressure level (aktiv) 135,6 dB
Equivalent noise level 26 dB(A)
Phantom powering 48 V / 1,1 mA
Nominal impedance
Min. terminating impedance 1000 Ohm
Dimensions 126,5 x 105 x 26,5 mm
Weight ca. 550 g
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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
The Microflex® Wireless Boundary Microphone offers total freedom of placement with no holes to drill or cables to run for installation.
The Wireless Boundary Microphone is the perfect solution for conference and meeting spaces where users demand flexibility and high performance. Compatible with Shure SLX® Wireless Systems.
| Electro-Voice PolarChoice Boundary Satellite Microphone Specifications:
Generation Element: Dual condenser,back electret
Frequency Response: 50 Hz to 20,000 Hz
Polar Patterns: Omnidirectional,Cardioid,Supercardioid,Hypercardioid
Sensitivity: Open Circuit Voltage,1 kHz:5.6mV/Pascal
Clipping Level (1% THD): >135 dB SPL
Equivalent Noise: Dynamic Range: >109 dB
Output Impedance,1 kHz: 200 ohms
Power Requirements: Phantom,12 - 52 VDC
Current Consumption: < 8 mA with P12 supp
Polarity: Pin 2 positive,referenced to pin 3,with positive
pressure on the diaphragm
Accessories Furnished: All versions of PolarChoice ship with the Shock Mount Kits and EV\'s Multiport™ windscreen. |
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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SHURE MX-391/C Microphone BOUNDARY
Microflex Boundary There's never been smarter boundary microphones than the Microflex models from Shure. With many models to choose from, equipped with features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators, Microflex Boundary microphones are the high-quality solution for a range of applications, such as altars, boardrooms and distance learning centers. Every Microflex Boundary microphone features one of the new interchangeable condenser cartridges. Available in cardioid, supercardioid and omnidirectional polar patterns, the Microflex cartridges give you superior Shure quality sound options for every installation. In addition, their programmable switches offer the flexibility to be set for Push to Talk, Push to Mute or Push On/Push Off modes. Attractively designed with a low profile, professional appearance, the Microflex Boundary microphones come with an easy to use paint mask for your custom-color installations. Find out why we call the new Microflex Boundary microphones "the smart choice" for just about every application. Take a listen today.
Model | Description | MX391/C - Cardioid | Miniature Black Condenser Boundary Microphone, In-Line Preamp, 12 foot (4 meter) Attached Cable to 4-Pin Mini Connector | MX391/S - Supercardioid | MX391/O - Omnidirectional | MX391/C - Cardioid | Miniature Black Condenser Boundary Microphone, 12 foot (4 meter) Attached Cable to 4-Pin Mini Connector, MX1BP Preamplifier | MX391/S - Supercardioid | MX391/O - Omnidirectional | MX391LP/C - Cardioid | Miniature Black Condenser Boundary Microphone (Wireless Compatible), 12 foot (4 meter) Attached Cable to 4-Pin Mini Connector Less Preamplifier | MX391LP/S - Supercardioid | MX391LP/O - Omnidirectional | MX391WLP/C - Cardioid | Miniature White Condenser (Wireless Compatible) Boundary Microphone, 12 foot Attached Cable to 4-Pin Mini Connector, Less Preamplifier | MX391WLP/S - Supercardioid | MX391WLP/O - Omnidirectional | MX391W/C - Cardioid | Miniature White Condenser Boundary Microphone, 12 foot (4 meter) Attached Cable to 4-Pin Mini Connector, In-Line Preamplifier | MX391W/S - Supercardioid | MX391W/O - Omnidirectional | MX392/C - Cardioid | Condenser Boundary Microphone, Built-in Preamp, Attached 12 foot (4 meter) Unterminated Cable, Logic Functions, Programmable Switch and LED Indicator | MX392/S - Supercardioid | MX392/O - Omnidirectional | MX393/C - Cardioid | Condenser Boundary Microphone, Built-in Preamp, 12 foot (4 meter) 3-Pin Mini Connector (TA3F) to male XLR, Programmable Switch and LED Indicator |
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