What's New: Audio Technology

Feb 1, 2004 12:00 PM

Speaker/Receiver

Listen Technologies Corp.
www.listentech.com

The wireless LR-600 can operate on AC power, an external 12 VDC power supply, or internal batteries. The LR-600 can use eight internal AA alkaline or NiMH batteries and incorporates SmartCharge for easy maintenance. The LR-600 uses advanced audio processing (SQ), which provides 80 dB signal-to-noise ratio. It also has a built-in 10W power amplifier (15W peak, 10W RMS) to drive the 2-channel speaker.

Amplifier

Crest Audio
www.crestaudio.com

The Pro 200 Series offers the sonic integrity and high power ratings of its predecessors, the Professional Series, but at a lighter weight and in a smaller enclosure. The four Pro 200 amplifiers all occupy two rackspaces and weigh 25 pounds. The Pro 9200 boasts 2,100W per channel (6,500W bridge mode) into 4ž, and the Pro 8200 offers 1,450W per channel (4,500W bridge mode); the Pro 7200 provides 1,000W per channel (3,300W bridge mode); and the Pro 5200 has 525W per channel (1,800W bridge mode). Apart from the differences in power, the amplifiers have similar specifications, including a frequency response within +0, -3 dB from 10 to 100 kHz, with hum and noise better than -110 dBA.

Amplifier

Architectural Acoustics
www.installaa.com

The ICS 4200 is designed for permanent installation and features four independent 200W amplifier channels in a compact, fan-cooled 2U rackmount package. The ICS 4200 can supply maximum output power to both low-impedance (4ž and 8ž) and high-impedance (70V) loads simultaneously in 2-channel configurations. Rear-panel switches allow you to place channels A and B or channels C and D into low- or high-impedance operation. To facilitate installations where larger power output requirements exist, the ICS 4200 can be configured for bridged operation.

Feedback Controller

Alphaton
www.atlanticproaudio.com

The FC-100 is an active notch filter that works dynamically to eliminate a feedback signal before it can grow into a peak. It has an easy setup level adjustment and provides 6 to 10 dB of feedback protection by analyzing the incoming signal, detecting the presence of feedback, and then notching out the feedback frequency. Internally, a discriminator circuit detects the presence of regenerative feedback and triggers the automatic equalizer to insert a notch where the feedback peak is coming up. This normally prevents other peaks from developing, but if they do, the process is repeated at high speed, thus keeping feedback under control.

Mic Preamp

Sanken
www.plus24.net

The HAD-48 mic preamp provides switched gains of +20 dB or +40 dB to boost signal levels. The HAD-48 features an XLR-style barrel (XLR-3M to XLR-3F) that is 4.14 inches long. The HAD-48 runs off 48V phantom power and draws less than 4.5 mA.

Microphone

Shure
www.shure.com

Designed for applications in which visible cable networks are undesirable, the Microflex MX692/C boundary microphone provides systems integrators with wireless freedom, superior sound, and reliable performance. Frequency agile with more than 100 selectable channels through its own integrated UC wireless transmitter, the low-profile mic is easy to set up and requires no drilling to install. Convenient to use, the MX692/C is outfitted with a touch-sensitive logic switch that can be programmed for push-to-talk, push-to-mute, or toggle operation. With a frequency response of 50 to 17,000 Hz, the microphone additionally features an easily accessible on/off switch, an active status indicator, a battery fuel gauge, and a protective grille shielding its cardioid cartridge.