Nov 5, 2009 6:02 PM, By Bennett Liles
Multiple control options for user-friendly systems.
Through a number of mounting options and interchangeable capsules, the flexible gooseneck VM-44 condenser microphone from Milab Microphones can be used to suit a variety of applications including tabletop conferencing. The mic has a switchable 12dB attenuator, and it provides a frequency response of 20Hz to 20kHz in a cardioid polar pattern with the standard capsule. Operating on 12V to 52V phantom power with a current consumption of 4mA, the unit handles a maximum SPL of 140dB and presents an impedance below 200V. Its in-line preamp is fitted with an XLR connector for direct interface with mixers.
For wireless conferencing applications, the Nady Systems WPM-2U offers an RF range up to 200ft. when used with the Nady UHF-3 receiver. Eliminating the clutter of cables on the conference table or console, up to six WPM-2U systems may be used simultaneously. The tabletop base features a switch for audio on/off and a separate switch for power. Both the power and audio switches must be in the on position for function. An LED on the top of the base lights green when the power is on. When the battery is low, the LED changes to orange. The unit operates in the 470MHz-to-510MHz band and maintains crystal-controlled frequency stability. The RF output is 50mW, and tone squelch prevents the receiver from picking up stray signals when the transmitter unit is switched off. The battery life on a single 9V is 8 hours to 16 hours, depending on the duty cycle.
Available in a black or white finish, the Peavey PM 18S is suitable for podium and conferencing applications using dual-flex tubing for strength with the elasticity to provide a variety of positioning choices. The back-electret-condenser mic produces a smooth frequency response in a cardioid pickup pattern for speech and high gain before feedback. A collet-type mounting flange allows the unit to be permanently placed securely onto a flat surface with mechanical isolation and a security locking system. The PM 18S operates on a phantom power supply of 9V to 52V, and it includes an LED power indicator.
With a 15in. gooseneck length, the Samson CM15P has flexible sections at the top and bottom with a rigid center. A permanently charged condenser element operating at 9V to 52V provides a cardioid polar pattern with a frequency response of 60Hz to 16kHz. The mic can be powered from a mixer or with the Samson S-phantom external power supply. There is also an onboard high-pass filter with a 100Hz roll-off for cutting background rumble and mechanical noise, and a dual-stage rippled windscreen to reduce breath popping when used up close. The FMS1 standard flange mount is included to fit with the XLR audio connector on the bottom of the gooseneck.
The CUS-101B condenser microphone from Sanken Microphone has a small, round base and a cardioid pickup pattern with a frequency response tailored for speech. The unit has approximately 20dB rejection on-axis vs. 180 degrees. The base has an isolating shock absorber composed of foam rubber and a metal spring. The gooseneck stem is available in three lengths: 5.2in., 9.6in., and 12in. The CUS-101B operates on 48V phantom power, and it provides a maximum handling capacity of 125dB SPL with a signal-to-noise ratio of 72dB and a dynamic range of more than 130dB. There is also a set of urethane windscreens (WM-101) available in seven colors.
The gooseneck cardioid condenser microphones featured on the delegate, chairman, and interpreter units of the Sennheiser SDC 8200 digital conference and interpretation system operate on 48V phantom power and offer a frequency response from 100Hz to 14kHz. Just below the microphone, each unit has a built-in loudspeaker and two headphone jacks with individual volume controls. The base also features a microphone activation key and LED status indicator. The chairman and delegate units also provide voting capabilities, an ID card reader for security, and an LCD for voting and text messages. The SDC 8200 SYS software can allow synoptic or nominative microphone control. The base includes two RJ-45 terminals for connecting up to 20 units along one twisted-pair cable.
The Shure MX405 and MX410 gooseneck condenser mics are available in 6in. and 10in. lengths respectively, and they may be fitted with either a cardioid or supercardioid capsule. The screw base on these models can fit either the MX400SMP surface-mount preamp for permanent position mounting in a table or the MX400DP wired desktop base (also available is the MX890 wireless desktop base). There is also a choice of having either a bicolor status indicator or LED light ring on the gooseneck, which may be controlled remotely in conjunction with external logic from a conferencing system using pins 3 and 5 on the audio connection. The MX400DP desktop base also features a configurable mute button with logic output. The mute button functions are programmed with an array of internal switches located in the base. Both units provide a frequency range of 15Hz to 17kHz and a dynamic range of 93dB.
As an integral mic/base unit for conference-table use, the Sony ECM530 condenser microphone can be phantom-powered by a pair of internal AA batteries or by an external power supply of 14V to 48V. The microphone provides a unidirectional pickup pattern with a frequency response of 70Hz to 18kHz and a dynamic range of more than 90dB. Typical of Sony’s ECM mics, the unit has a sensitivity of -49dB ±2dB and a signal-to-noise ratio of more than 63dB. The mic cable attaches to the back of the matte black, noise-isolated base that matches the microphone’s color. The gooseneck is flexible for placement options.
The Taiden HCS-5300 series infrared conferencing system uses electret-condenser gooseneck microphones operating on 1.5V on its chairman and delegate units. Powered from the battery supply on the chairman and delegate units, the microphones are available in 13.2in., 16.4in., and 18.8in. options with a unidirectional polar pattern, a frequency response of 30Hz to 20kHz, and SPL capacity of 125dB. The units have a proprietary 6-pin connector, and they are available in a silver/gray finish. A light ring around the element indicates when the microphone is turned on.
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