Bluetooth is a type of wireless communication that allows different devices to communicate at a particular radio frequency. This technology has been effectively applied in modern home cinema, thus opening the "era of wireless cinema." Home theater equipped with Bluetooth function has its advantages and disadvantages.

Home Theater Without Wires

Wireless signal transmission methods are far from new: they existed 15-20 years ago. Such technology was used in professional concert equipment, for example, in radio microphones and electric guitars. Wireless technologies have stepped into the world of amateur audio systems. Acoustic signal in modern home theaters wirelessly transmitted:

  1. Using Bluetooth;
  2. Using the transmitter via Wi-Fi;
  3. Radio waves.

Bluetooth Home Cinema

Bluetooth technology allows digital devices to exchange information at a certain distance (usually no more than 10 meters) over a wireless connection. The Bluetooth function in a home theater can be implemented in two ways:
  1. Wireless audio reception from a smartphone, laptop, or tablet to a home cinema signal source (receiver, media player, etc.) with its further transmission to wired speakers.
  2. Beep transmission to acoustics wirelessly within the system.
Different cinemas can combine these functions, that is, they can receive and transmit wirelessly. But at the same time, there are home systems that can receive data from an external Bluetooth source, and transmit it to the acoustics in a wired way. And they are also called wireless home theaters.

Receive audio files via Bluetooth

Output sound files from a smartphone, laptop, or tablet are carried out on one principle:
  1. Audio files from a mobile device, which also has a Bluetooth chip, are transmitted to the receiver.
  2. The signal is decoded, divided into channels, then branched.
  3. Some channels are transmitted to the amplifier and then to the front and center speakers using wire technology.
  4. Another part of the channels is recorded and distributed to the rear active speakers, where they are received, re-decoded, amplified, and released into the air. In the same speakers are transmitted and command the volume of the sound, the delay time for the realization of spatial sound.
Home theater model Acoustic Audio AA5172 700W Bluetooth Home Theatre 5.1 system. distinguishes beautiful sounds. The total acoustics power is 700 watts. Sound to the speakers can be output from any mobile device using the Bluetooth module. Wireless rear speakers connect to a separate amplifier, they do not need to pull the wires throughout the room.

The sound quality of Bluetooth cinemas:

The sound quality in such speakers still plays the sound that is reproduced wired. In the latter, the signal arrives in analog form and is also fed into the air without changes and transformations. A digital signal, before it is reproduced in the active (rear speakers), goes through the stages of additional encoding and decoding, which can not but affect its quality. Although today on the market you can find models with sound recovery systems.

Bluetooth interference

Home theater with a Bluetooth device may not work correctly:
  1. If the user accidentally touches the receiving or transmitting part of a mobile device or movie theater.
  2. If the phone or tablet is at a great distance from the home theater reception system. If you increase the distance by more than 10 m, the connection may be interrupted.
  3. Even within the specified range, communication may be interrupted if obstacles in the form of doors or walls arise.
  4. In the presence of a nearby large electric field.
  5. With the simultaneous pairing of multiple gadgets with Bluetooth.
  6. Interference can create microwave ovens, a wireless internet adapter, fluorescent lights, and even gas stoves. These devices work on the same frequency as Bluetooth.