Wireless speaker

Portable wireless speakers for outdoor use are typically designed for ruggedness, portability and battery life, whereas stationary wireless speakers with a focus on good sound quality are meant to be used in home audio systems or surround sound systems for TV or video.

The receiver is positioned where the listener wants the sound to be, providing the freedom to move the wireless speakers around without the need of using cables.

The receiver/speaker unit generally contains an amplifier to boost the audio signal to the loudspeaker; it is powered either by batteries or by an AC electric outlet.

[2] The signal frequency range used by wireless speakers is generally the same as that used by cordless telephones – 900 MHz.

Many wireless speakers feature variable transmission channels that can be set using a tuning knob to overcome potential RF interference with other nearby wireless devices, such as cordless phones or baby monitors.

Some wireless speakers add a passive radiator to improve low frequencies and achieve deeper sound.

The higher end models add an LCD screen to make it easier to select and store radio stations.

Most wireless speakers have a built-in microphone, which allows to receive and make calls using a mobile phone in hands-free mode.

This way, commands can be passed to the speaker via the integrated microphone, which will then be executed by the voice assistant.

In this case, the enclosure is completely submersible in water to a depth of 1 meter for half an hour.

The mounting bracket is the safest system to fix the speaker, but requires drilling a hole in the wall.