By Scott Humton


A Number Of Good Tips To Help Decide On A Wireless Surround Sound Set

If your residence 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. Often the audio source cannot be moved. Running speaker wires between rooms will be expensive and consequently many people are searching for other options. Products which resolve this challenge are commonly based on the following technologies: infrared wireless, RF wireless, wireless LAN or powerline.

Infrared wireless audio products are restricted to line-of-sight applications, i.e. only work within a single room because the signal is broadcast as infrared light which cannot go through walls. This technology is frequently found in wireless speaker kit products.

Infrared is limited to line of sight since the audio signal is broadcast as lightwaves and as a result products using this technology, such as infrared wireless surround sound products, are limited to a single room. RF wireless products broadcast the audio as RF waves - either by using FM transmission or digital transmission - and can as a result without problems transmit through walls. The least expensive choice is FM transmission. Products utilizing FM transmission, on the other hand, have a series of drawbacks. These include degradation of the audio quality due to noise or hiss and audio distortion. In addition, FM transmitter products are also fairly prone to interference from other wireless transmitters.

Digital wireless audio transmitter devices, such as products from Amphony, utilize a digital protocol. The audio is first converted to digital data before being transmitted. Some wireless audio transmitters will employ audio compression, such as Bluetooth transmitters which will decrease the audio quality to some degree. Digital wireless audio transmitters which send the audio uncompressed offer the highest audio fidelity.

Powerline products broadcast the audio via the power mains and provide large range. They run into trouble in houses where there are individual mains circuits in terms of being able to cross over into another circuit. Also, these products build in a delay of a number of seconds to safeguard against transmission errors during power surges and spikes which prevents their use in applications where the audio from wireless loudspeakers has to be in sync with other non-wireless speakers or video.

Powerline products use the power mains as a medium to send the audio. These products usually provide excellent range. On the other hand, they face problems if there are several separate mains circuits in the house. In this case the signal will have difficulty crossing between these circuits. Also, these products build in a delay of several seconds to safeguard against transmission errors during power surges and spikes which prevents their use in applications where the audio from wireless speakers has to be in sync with other non-wireless speakers or video.

Here are some tips for picking a wireless audio system: If you plan to stream audio into numerous rooms of your house, be certain to select a system that allows streaming to several receivers at the same time. That way you don't have to purchase a separate transmitter for each receiver that you are streaming to. Picking a product with some form of error correction will help mitigate against strong RF interference. Such interference can be brought on by other wireless transmitters. Digital RF audio transmitters will be able to maintain the original audio quality. If you have time-critical applications where sync of the audio is important then you should get a transmitter with a low audio latency. An audio latency of smaller than 10 ms would be suitable for most scenarios.

For high amplifier power efficiency and best sound quality, confirm that the amplified receiver has a built-in low-distortion digital amplifier. Pick a system that provides receivers that can drive speakers with the preferred Ohm rating. Make sure the receivers have a small form factor and are easily mountable. This will help during the installation. 5.8 GHz wireless products usually have less trouble with interference from other wireless transmitters than devices working at 900 MHz or 2.4 GHz.




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