The advent of wireless technology has led to many perks for tech-junkies and those who relish the latest gadgets. Wireless stereo speakers are one of the most common benefits of the technological age and can be used to fortify your home theater system or simply playing music and movies off of your laptop. The following article will outline the basic science behind wireless speakers to help you understand how they work.
Typical speakers transmit their audio signals through audio cable. However, wireless speakers transmit their audio signals using radio frequency (RF) sound waves. Ultimately, this is accomplished by turning an electric sound signal into an acoustic sound signal. There are two main units to wireless speaker setups: the main speaker and the transmitter unit. The main speaker is combined with an RF receiver, whereas the transmitter unit is specifically made to transmit RF sound waves. The transmitter unit is what you connect to your audio output such as your laptop or television, usually using an RCA plug. Additionally, the main speaker unit usually comes with an amplifier built-in in order to boost the audio signal. The following diagram provides an overview of the average wireless stereo speaker setup:
Computer >>> TV Transmitter unit >>> RF Sound Waves >>> Main speaker (RF receiver)
In regards to frequencies, most wireless speakers have a signal frequency range of 900 MHz. However, since this frequency range can overlap with that of cordless phones and other wireless devices, most wireless speakers come with multiple transmission channels to avoid this potential problem. Additionally, the RF signals generated by wireless stereo speakers can generally travel over a range of 100 – 300 feet, depending on the brand you buy. The RF signals can also travel up walls, ceilings and floors, making them ideal for homes. For more information on the best wireless brands, check out our The Best Wireless Brands article.
There are many different kinds of wireless speakers specifically developed for different uses. For example, outdoor wireless speakers are available with RF transmissions specifically designed for large, open spaces. Additionally, there are stereo wireless speakers for those who want a fuller, more developed sound. The main difference between wireless stereo speakers and non-stereo wireless speakers is their ability to utilize both left and right stereo channels in a single speaker, which is what creates the fuller sound.
The biggest criticism of wireless speakers is the potential interference with other RF wave units. However, given the option of separate transmission channels, this problem is fairly easy to overcome. Nevertheless, many audio geeks frown upon wireless speakers for this lapse in quality and instead opt for the more high-end, non-wireless units for their consistency in the quality of sound transmission.
Ultimately, although wireless speakers are somewhat less reliable than standard speakers, their convenience and portability make them a prime choice for casual sound system users. The above article will hopefully have helped you understand how these devices work, as this information is valuable when deciding whether or not wireless speakers are the best choice for you.
