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Crown MB3 Supercardioid Miniature Boundary Mic
The Crown® MB-3 is a miniature boundary microphone for multi-miking applications such as teleconferencing, distance learning, boardrooms, courtrooms, and security applications. This low-profi le, circular mic permanently installs into a hole drilled in a table, lectern, or ceiling.
Thanks to its supercardioid pickup pattern, the MB-3 greatly reduces ambient noise and pickup of room reverberation. The result is a clearer, more intelligible sound. On the bottom of the mic is a tubular power module with a 3-pin XLR-type output connector. It is powered by 12-48V phantom power, and has a low-impedance balanced mic-level output.
Features:
- Ideal for teleconferencing, distance learning, boardrooms, courtrooms and security
- Small and inconspicuous
- Installs permanently in a table top, wall or ceiling
$ 332.00
(save 26% off RRP)
(shipping $10.00)
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Specifications - Type: Phase Coherent Cardioid.
- Element: Electret condenser.
- Frequency response (typical): 50 Hz to 15,000 Hz at 30 degrees incidence to surface (see Fig. 1).
- Polar pattern: Half-supercardioid (supercardioid in the hemisphere above the primary boundary). See Figs. 2 and 3.
- Impedance: 150 ohms, balanced (recommended load impedance 1000 ohms or greater).
- Open-circuit sensitivity (typical): 22 mV/Pa* (–33 dB re 1 volt/Pa).
- Power sensitivity: –30.5 dB re 1 mW/Pa*. EIA rating –125 dBm.
- Equivalent noise level (self-noise): 22 dB SPL typical (0 dB=0.0002 dyne/cm2), A-weighted.
- S/N ratio: 72 dB at 94 dB SPL.
- Maximum SPL: 120 dB SPL at 3% THD.
- Polarity: Positive (inward) pressure on the diaphragm produces positive voltage on pin 2 with respect to pin 3.
- Operating voltage: Phantom power, 12-48 volts DC on pins 2 and 3 with respect to pin 1 of output connector.
- Current drain: 4 mA nominal.
- Connector: 3-pin pro audio, XLR-M type.
- Cable: None supplied. Use two-conductor shielded mic cable.
- Materials: High-impact molded plastic and steel mesh mic grille, steel chassis.
- Finish: Satin black.
- Net weight: 2.7 ounces (78 grams). .
- Optional accessories: PH-1A phantom power supply (1 channel, battery or DC-adapter powered).
- Operating temperature range: –10° to 50° C, or 14° to 122° F.
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