Guides To Find The Right Wireless Audio Transmitter For Home Audio Streaming

Posted on by Donny Billinton on October 26th, 2011 | 0 Comments »

Lately more and more Wireless Audio Transmitter products have emerged which promise to deliver the ultimate freedom of broadcasting music throughout the home. We will look at the most widespread technologies for wireless audio and give some tips for choosing the best Wireless Audio Transmitter product.

If your home is not wired for audio then you face quite a problem when you want to get your music from your living room to your bed room. Frequently the audio source cannot be moved. Running speaker wires between rooms will be expensive and consequently, a lot of people are looking for alternatives. The following technologies are utilized by devices solving this problem: Infrared, RF, Wireless LAN and Powerline.

Infrared Wireless Audio devices are limited to line-of-sight applications, i.e. only work within a single room because the signal is broadcast as infrared light which can’t penetrate walls. This technology is often found in wireless speaker kit products.

RF Wireless products send the audio as RF waves – either by using FM transmission or Digital transmission – and can as a result without difficulty transmit through walls. FM Transmitters are the least expensive alternative. They offer decent range but the music signal is prone to audio distortion and static and is very susceptible to interference from other wireless transmitters.

Digital Wireless Audio Transmitter products, such as products from Amphony, make use of a digital protocol. The audio is first converted to digital data before being broadcast. This conversion and transmission in the digital domain will ensure that the original audio quality is maintained. On the other hand, this is only the case of the data is sent uncompressed. Some wireless audio transmitters will apply some type of audio compression. Such products include Bluetooth Audio Transmitters. Audio compression will degrade the quality of the audio to some extent.

Products using Wireless LAN are practical when streaming audio from a PC. Their disadvantage is that they typically have some fairly high latency, i.e. the signal will be delayed by some amount since Wireless LAN was not particularly designed for real-time audio streaming. Also, some products require to buy separate Wireless LAN modules that are plugged into every audio receiver.

Powerline devices use the power mains as a medium to send the audio. These products typically provide excellent range. However, they face trouble if there are a number of separate mains circuits in the house. In this case the signal will have trouble crossing between these circuits. Another challenge facing Powerline products are strong power surges and spikes. Such surges can bring about dropouts in the audio due to errors in the transmission. To safeguard against these errors, Powerline products typically build a delay of several seconds into the transmission.

Now we’ll give you some recommendations for shopping for a wireless system: Go for a system that supports numerous wireless receivers if you plan to stream audio to several rooms so that you don’t have to purchase a separate Transmitter for every Receiver. Selecting a product with some sort of error correction will help mitigate against strong RF interference. Such interference can be brought on by other wireless transmitters. Choose a Digital RF Transmitter to preserve the original audio quality, preferably one with an audio latency of less than 10 ms in case of video or other time-sensitive applications.

Make sure the Wireless Audio Transmitter provides the audio inputs you need. You may need amplified speaker inputs, RCA audio inputs etc. Get a wireless system where you can buy additional Receivers later on. You should verify that you can get Receivers for all the different applications you have. Such Receivers may include Amplified Receivers for Passive Speakers or line-level Receivers for Active Speakers. Given that you may want to connect the transmitter to several sources, you should select a Transmitter that can be adjusted to different signal volume levels to prevent clipping of the audio signal inside the Transmitter converter stage.

Ensure that the system offers Amplified Receivers with a Digital Amplifier to ensure high power efficiency. This will help keep the Receiver cool during operation. Also, make sure the Amplifier provides low audio distortion. This is crucial for good sound quality. Pick a system which provides Receivers that can drive Speakers with the desired Ohm rating. Make sure the Receivers have a small form factor and are easily mountable. This will help during the installation. Devices which function in the 5.8 GHz frequency band will have less trouble with wireless interference than devices utilizing the crowded 900 MHz or 2.4 GHz frequency band.

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Read my other articles about The Importance Of Audio Amplifier For Home Theater and Getting The Best Home Theater Speaker And Other Home Theater Components

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