Basic Hi Fi guide: Understand of 2.0, 2.1, 5.1, 6.1, and 7.1 Channel Systems
2.0 Channel Stereo Systems
This is a basic stereo system consist of 2 speakers for left and right channel sound delivered from stereo amplifier or receiver.
2.1 Channel Stereo Systems
This is just one additional subwoofer speaker added on the 2.0 stereo systems, the .1 Low Frequency Effects provides very low bass for music sources and special effects on DVD movie sound tracks, hence it contains 3 speakers.
5.1 Channel Home Theater Systems
This is currently most popular system for Dolby Digital 5.1 and/or DTS 5.1 Home hi-fi entertainment. The five-point-one channels consist of 5 channels of sound which are left and right, like a stereo system, a center channel for movie dialog or music vocals and on-screen sound, and left and right surround channels, for special effects and surround sound plus one subwoofer channel. Hence there are total 6 speakers to handle the movie theater sound or multichannel music ( DVD-Audio and SACD discs) in your home. This combination produces a sound field that delivers the users with sound coming from in front of and behind.
6.1 Channel Home Theater Systems
With one additional rear-center speaker add on the 5.1 system, the 6.1 system consist of 3 front and 3 rear speakers and it delivers an even more enveloping surround effect than a 5.1-channel system. Some DVDs are encoded with 6.1 channel Dolby Digital EX and DTS-ES sound, and can be played back on this type of system.
7.1 Channel Home Theater Systems
Today’s high-def disc formats can support more detailed audio. Now most Blu-ray Disk players support 7.1 audio formats, and offer high-quality, lossless surround sound.
7.1 Hi Fi System have three front channels, two surround channels and two surround-back channels, plus a subwoofer channel. The additional rear surround channels provide more detailed surround effects than 5.1 and 6.1 Dolby Digital and DTS and will also support Dolby Digital Plus and DTS-HD (High Resolution).
Article From: Classic Hi Fi - Quality Hi Fi System in Sydney
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