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Conference Microphones

Nov 5, 2009 6:02 PM, By Bennett Liles

Multiple control options for user-friendly systems.


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MPR 111 Revoluto desktop microphone

MPR 111 Revoluto desktop microphone

Beyerdynamic offers a unique solution to conferencing with its MPR 111 Revoluto desktop microphone. The Revoluto uses an array of integrated microphone capsules to produce a corridor characteristic capable of providing an even pickup whether the user is sitting or standing at his or her conference position. The back-electret-condenser design operates on 44V to 52V phantom power, producing a frequency response of 130Hz to 17kHz and a maximum SPL handling capacity of 112dB. The unit’s audio interface is a standard 3-pin mini XLR male connector. The Revoluto design is available as a generic mic capable of operating with any professional mixer or as a microphone unit with programmable control and connections for operation with external logic.

C3-Halo-RF series cardioid condenser microphone

C3-Halo-RF series cardioid condenser microphone

The DDU250 from Bogen is a dynamic microphone requiring no phantom power and incorporating a 16in. flexible gooseneck. The heavy zinc, die-cast base can be moved around on a table or podium, and the 10ft., 5-conductor cable includes external contact closure outputs for the talk switches. The local switches on the base are push-to-lock and push-to-talk. The unit exhibits a frequency response of 100Hz to 12kHz and a signal to noise ratio greater than 65dB.

The DCN-MICS/L pluggable, short- and long-stem microphones from Bosch Communications operate with the DCN-DISCS discussion unit in the Digital Congress Network Next Generation conferencing system to provide a unidirectional pickup pattern. The mic has red and green illuminated indicators to show if the mic is active (red) or if a request to speak has been initiated (green). It connects directly to the discussion unit, Concentus units, flush-mounted microphone connection panes, or DCN_IDESK interpreter desk. It also exhibits low susceptibility to cell phone interference.

Communication Technology C98 microphone

Communication Technology C98 microphone

The Clockaudio C3-Halo-RF series cardioid condenser microphone may be used with a variety of conferencing systems by including an extra two pins on its XLR connection to be used for external control logic. This allows the microphone to illuminate an LED halo ring on the mic when it’s active. The unit has a frequency response of 50Hz to 18kHz, a sensitivity of -47dB ±3dB, and an impedance of 200V. It can operate on 12V to 48V phantom power, and it comes with a W2 foam windscreen. The gooseneck is available in four lengths.

Electro-Voice PolarChoice Desktop

Electro-Voice PolarChoice Desktop

The Communication Technology C98 microphone is fitted to a 11.8in. gooseneck and terminated with an M10 mounting base, nuts, and washer. Either a unidirectional electret capsule may be fitted to it using an internal FET preamplifier or a moving-coil dynamic capsule may be used. Three-pin XLR and flange mounts are also available. The moving-coil capsule has a frequency response from 100Hz to 8kHz with a presence lift at 3kHz, and the electret capsule has a frequency response from 100Hz to 15kHz.

The PolarChoice Desktop microphone from Electro-Voice has a gooseneck stem on an oval base and offers a selection of omni, cardioid, supercardioid, and hypercardioid polar patterns and either flat or high-pass frequency response. These options are switch-selectable on the underside of the base along with the mic switch function. Push-to-talk, push-to-mute, and momentary or toggle modes can be chosen by the combination of two switches. The control of the microphone can also be switched between local and automatic mixer modes to suit the system in which it is being used.

JTS Professional ST-850

JTS Professional ST-850

The ST-850 gooseneck microphone from JTS Professional is a back-electret-condenser mic that can be used in a wired or wireless configuration to provide a frequency response of 50Hz to 18kHz in a supercardioid polar pattern. The base unit includes a mic activation switch, and it may be connected directly to an audio cable with phantom power or it can contain a bodypack-style wireless mic transmitter. Maximum SPL-handling capability is 125dB, and the impedance is 2kV wireless and 100V wired. The gooseneck length is 12.5in.



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