AKG Acoustics WMS 300 manual Description, Microphone System Features

WMS 300

Description

The WMS 300 wireless microphone comprises a transmitter bodypack, four transmitter handheld microphone models, and a receiver. The bodypack and handheld transmitters have the same transmission characteristics, with a maximum radiated power of 10 milliwatts. Through signal companding (compression and expansion), a dynamic range greater than 100 dB is attained at the receiver’s output. Audio bandwidth of the system is uniform over a wide range in typical performance spaces, extending up to distances of

330 feet (100 meters). Individual handheld microphone and bodypack transmitters are factory matched to a given receiver. Each set provides a 20 MHz-wide UHF send-receive channel, each with 16 sets of sub-channels for microphone use. In the U. S., a total of eight sets of 20 MHz channels may be chosen from. Because of some channel overlap, and the recommendation that adjacent sub-channels not be used in a given installation, the user may expect 16 usable channels in a given installation. The Model PT 300 bodypack is powered by 3 AA batteries, and normal battery life of 10 to 12 hours can be expected from standard 1.5 volt cells.

The PT 300 accepts both microphone and line level input signals, and four values of input sensitivity can be selected for optimum transmission. The antenna is a quarter- wavelength wire, affording easy concealment and comfortable wearing. Four of AKG’s most popular handheld "vocal" microphone head units are incorporated into the handheld transmitting models. The microphones are the models D 3700, D 3800, C 5900, and C 535 EB. The handheld transmitters have the following controls: power on/off, microphone mute, and input sensitivity control. In addition, a DIP switch provides for simple setting of the desired transmitting frequency, and LEDs indicate low battery and signal overload. Powering of the handheld transmitters is the same as for the bodypack.

The SR 300 receiving unit is one standard rack unit high and one-half rack unit wide. Thus, two receiving units can be placed side by side. Each SR 300 comes from the factory with a 20 MHz-wide UHF channel containing a set of 16 preset operating frequencies.

The SR 300 operates as a true diversity receiver, in which two completely separate receiver-demodulator sections are operating at all times. The output of the system is the receiver that has the widest dynamic range, and the switching from one receiver to the other is absolutely noiseless.

Controls on the SR 300 include: squelch threshold adjust, carrier frequency selection, and output level control. Indicators on the unit include: mute, audio overload, RF, and diversity LEDs, Each SR300 can accommodate a pair of diversity antennas: however, when a number of receivers are used in a single installation, a master antenna pair (with booster) can be used and fed to all receivers.

A wide range of accessories is provided for operational flexibility and ease of installation.

Microphone System

Features

•Factory matched and optimized transmitter/receiver frequency group

•True diversity reception

•Dynamic range > 100 dB

•Simple, foolproof setup procedure

•Both bodypack and handheld microphone transmitters available

•32 channels available for U. S. usage