Conference Microphones Tech Showcase
Oct 31, 2011 1:00 PM, by Bennett Liles
Designed for small to mid-size conference rooms, the Revolabs FLX conference phone system has several interchangeable components to enable setup to suit a variety of acoustic environments. The system operates digitally in the 1.9GHz ISM band with an encrypted signal and is available with two or four microphones along with VoIP or analog phone interfaces. With the speaker on a conference table, lapel or tabletop microphones can transmit in any combination. The dialer can also be used as a conventional phone for private conversations at any time during a conference. System audio frequency response is 80Hz to 11kHz, and the FLX can be used as the audio interface for a videoconferencing system.
For conference venues in which permanent microphone positioning may be required along with quick and easy removal, the CM20P fixed charge condenser microphone can be an asset with its directly connecting base and built-in XLR connector. Samson Technologies equipped it with a selectable 100Hz high-pass filter and a 20in. gooseneck featuring a rigid center area and flexible upper and lower sections. The mic is operated on 9V-52V phantom power while offering a 60Hz to 16kHz frequency response, and it comes in a matte black finish. Accessories include a two-stage rippled windscreen, FMS1 standard flange mount for podiums, and SMS1 shock mount.
The CUS-101B gooseneck condenser microphone from Sanken can be used in a conference setting with its cardioid pickup pattern exhibiting 20dB attenuation at 180 degrees off-axis. The microphone also has a 20Hz high-pass filter to reduce any mechanical rumble from table vibration. The overall frequency response is 50Hz to 10kHz, and the unit operates on 48V phantom power. The mic has a male XLR connector, which fits into the included TS-101HGN stand base. The mic stem is available in 5in., 9.5in., and 11.8in. lengths. The WM-101 urethane windscreen is available in seven colors contained in a single package.
For controlling up to 40 connected chairperson and delegate units, Sennheiser offers the ADN CU1 digital discussion central unit. It is controllable through a directly connected keyboard, screen, and mouse using the Conference Manager software application. Or it can be set up with a menu on the front panel. Alternatively, a central media control system can be connected via the Ethernet port on the rear panel. The unit supplies 52.8VDC power and control data through a proprietary network bus to control the discussion units. The ADN C1 chairperson unit features a supercardioid gooseneck microphone with a DSP limiter and twin speaker system in the base. The ADN D1 delegate unit has the same external design along with twin RJ-45 terminals for system connection.
The Microflex line of modular gooseneck microphones from Shure consists of the MX405, MX410, and MX415; these provide gooseneck lengths of 5in., 10in., and 15in. respectively. Available in cardioid and super-cardioid polar patterns, the standard models feature a bi-color status indicator while the R models have a single-color light ring. The base for the desktop models has a programmable mute switch. Base models include both wired and wireless options, and the wireless models are compatible with SLX4 and SLX4L receivers. Dependant on the base option, there is also a logic input/output for remote LED and mute control.
Sony designed the ECM530 tabletop condenser microphone for conferences and lectures with two-way powering on either AA batteries or external 14V-48V phantom power. The 3.5in. diameter stand base firmly anchors the microphone while the gooseneck extends from 12 7/8in. to 17 3/8in. The microphone provides a frequency response of 70Hz to 18kHz and a maximum SPL of 126dB. It comes in a matte black finish with a 6ft. cable terminated with an XLR connector.
The HCS-8318ACE/20 paperless multimedia congress terminal from Taiden features a 10in. high-resolution 1024x600 LCD touchpanel and an integrated 3-megapixel camera to provide speech, vote, simultaneous interpretation, sign-in, conference documents management, speech text guidance, office documents reader and editor, documents recognition, meeting record, desktop sharing, delegate information, and conference agenda display. It can also take pictures and provide videoconferencing. Similar in appearance to the delegate unit, the chairman unit adds a microphone priority button that switches off all delegate mics. The unit includes a small two-way loudspeaker that mutes automatically when the microphone is on along with a built-in IC card reader and fingerprint identification module.
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