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Recently more and more manufacturers have started to offer home theater systems with wireless speakers or wireless wireless surround sound speaker kits. From a homeowners standpoint, eliminating long speaker cable runs is certainly a big plus. Multi-channel surround sound is a fairly new phenomenon and as such many older houses are not wired for rear speakers, not to mention 7.1 systems. As such a wireless solution might be the logical conclusion. But how reliable are these wireless surround sound products in a real-world scenario and do these options really eliminate the dreaded cable clutter? Looking at some of the available options for wireless speaker kits, you’ll notice that most of these systems, such as the products from LG or Rocketfish, will connect two speakers to a wireless receiver unit. Thus while these systems eliminate the speaker cable from the front of the room to the back, there still is a significant amount of speaker cable to run. A better choice would be a product, such as the wireless speaker kit from Amphony, which offers separate wireless receivers for each speaker thus offering a much cleaner installation. Will the wireless have any effect on performance? Audio quality is a main concern. In picking a wireless system, one should choose a system where (a) the transmission itself does not pick up any noise or degradation in order to maintain the audio quality and (b) the wireless amplifier itself should be a high-quality amplifier with minimal distortion. Also, the size of the wireless speaker amplifier is a consideration as the receiver should be invisible. Another issue to consider is that in a home theater setting is that the sound to all speakers should be in sync with the video and also in sync with each speaker. Some wireless units such as the Rocketfish will introduce a delay in the signal, apparently to cope with interference. As such you should investigate how much the signal travelling to the wireless speaker will be delayed. The Amphony product however specifies a delay of less than 1 ms which should be low enough for pretty much any real-world application. Finally, how reliable are wireless speakers and speaker kits? The final consideration is how reliable are these wireless speakers and speaker kits in a real-world scenario. A problem facing any wireless device is interference from other wireless devices. Especially consumer devices in the 900 MHz and 2.4 GHz frequency bands, such as WiFi or Bluetooth devices, have become more and more widespread and cause an increasing challenge for any wireless device. Choosing a product that works in a less crowded frequency band, such as the 5.8 GHz frequency band, reduces the impact of interference. In addition to connecting rear speakers in a home theater setting, another useful application of wireless surround sound kits is setting up speakers wirelessly in another room in cases where installing speaker wire between different rooms presents a challenge or for setting up speakers in your backyard within minutes. The applications are endless.
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Gunter Fellbaum has been developing audio and electronic products for over a decade. Get additional information about digital wireless surround sound and wireless speakers from Amphony's website.
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