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The black Shure CVB-B/C is a Centraverse Series cardioid boundary condenser microphone designed to provide an optimized-for-speech frequency response and discreet desktop installation for presenters and speakers in conference rooms, corporate events, houses of worship, and meetings. The low-profile microphone features CommShield technology to reject RF interference and an attached 12’ XLR cable for compatibility with most mic preamps.
The cardioid condenser element yields a frequency response of 70 Hz to 16 kHz, which naturally attenuates low frequencies that are often produced by vibration and rumble. It is powered by 11 to 52 VDC phantom power.
- Cardioid polar pattern cartridge
- CommShield technology guards against RF interference from portable wireless devices (smartphones, among others) and enables high resistance to nearby radio signals
- Attached 12\' XLR cable
- Frequency response is suitable for capturing fast transients in a wide variety of locations such as podiums and desktops
- Shure design and rugged, dependable construction
- Mounting holes for secure installation
- CE compliant
General
Output Connectors |
1 x 3-Pin XLR |
Cable Length |
12.0\' / 3.66 m |
Operating Current Consumption |
2 mA |
Operating Voltage |
11 to 52 V |
Operating Temperature |
0 to 135°F / -17.78 to 57.22°C |
Operating Humidity |
0 to 95% |
Length |
3.5" / 88.90 mm |
Weight |
8 oz / 227 g |
Sound Field |
Mono |
Operating Principle |
Pressure Gradient |
Transducer |
Electret Condenser |
Tube |
No |
Polar Pattern |
Cardioid |
Frequency Range |
70 Hz to 16 kHz |
Signal-to-Noise Ratio |
67 dB |
Equivalent Noise Level |
27 dB A-Weighted |
Maximum SPL |
120 dB SPL |
THD |
1% |
Impedance |
180 Ohms |
Sensitivity |
23 mV/Pa |
Dynamic Range |
93 dB |
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Designed for Broadcast, House of Worship, Pro Music, and other applications. Half-cardioid polar pattern Boundary layer Ultra-thin profile (16 mm) housing Rubber non-slip bottom pad and strong steel screen Integrated pop filter Case Material Die cast zinc Connector Type 3-pin XLR Element Back Electret Condenser Finish Non-reflecting Black Finish White Impedance, Low-Z balanced 200 Ω Mic Type Boundary Open Circuit Voltage 25 mV/Pascal Polar Pattern Cardioid Wired/Wireless Wired Height 16 mm (0.63“) Width 94 mm (3.7“) Depth 123 mm (4.84“) Weight Net 12.63 oz (358 g) |
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
| 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. |
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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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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