Speakers are used for amplifying sound. They are popularly known as loudspeakers. But the wireless speakers being talked about here are those which are not connected to the main unit of the system through a wire. The audio information that has to be amplified is transmitted to the wireless speakers with the help of radio-frequency waves. The whole system consists of amplifiers, a RF receiver, and another unit that contains the transmitter of the RF signals. The transmitter is connected to audio devices like televisions and CD or DVD players and the receiver is positioned according to wishes of the listener. This gives the freedom to the listener to carry these amplifiers to others rooms because they are not connected to the main unit with wires. With the increase in the sophistication and complexity of home audio entertainment systems, these items are in great demand. Previously the entire system required a bunch of wires spread all over the house in order to connect them to the receiver that was positioned at some place according to the wishes of the listener. This was pretty troublesome as people often tripped over these wires and fell. But today, these same amplifiers can be placed throughout the whole house without a single wire inside the house. These systems provide attractive solutions since installing them does not require extensive, and at times expensive, wiring. Today, a wide variety of these systems are available commercially. They have a wide variety of uses from receiving signals from devices like the phonographs to tape recorders and CD players. They are also used in portable home telephone systems, stereo systems, sound surround systems, and home theater systems. These wireless speakers allow the listener to move about throughout the house with any inconvenience. They...