Speaker that use radio frequency (RF) waves to receive audio signals we called wireless speaker. While others depend on Bluetooth to transmit audio data to the receiving speaker.
Wireless speaker consists of two units: the main speaker unit combining the loudspeaker itself with an RF receiver, and an RF transmitter unit. The transmitter connects to the audio output of any audio devices such as HI-FI equipment, televisions, computers, mp3 players, etc. The position of the receiver to locate the sound provides wireless speakers with the ability to move freely without the use of cables. The receiver/speaker unit generally contains an amplifier to boost the audio signal to the loudspeaker. Batteries may last for 3 to as long as 24 hours; almost all wireless speakers operate on rechargeable batteries that are not replaceable so that the lifespan of these speakers is that of their batteries.
The wireless speaker`s frequency range is usually about 900 MHz. The RF signal can traverse walls and floors/ceilings. Most manufacturers claim the signal transmits over a range of 150 to 300 feet (50 to 100 m). Many wireless speakers feature variable transmission channels that can set using a tuning knob to overcome potential RF interference with other nearby wireless devices, such as cordless phones or baby monitors. Bluetooth devices use a radio communication frequency such that the devices do not have to be in a visual line of sight with each other.
Different types of wireless speakers are designed for specific needs. The stereo speaker can deliver both Left. And Right stereo channels in a single speaker. Speakers designed specifically for outdoor use have a robust casing; manufacturers claim these are weatherproof. Home theatres utilize a specialized set of speakers in which only the rear speaker is wireless. While the front speakers are wired.
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