What are 5.1 Channel Speakers?
5.1 channel speakers are the most common implementation of surround sound.
In a system with 5.1 channel speakers, there are actually six speakers:
- Left Front
- Center Front
- Right Front
- Left Rear
- Right Rear
- Subwoofer
The first five speakers have a frequency response of 20Hz to 20 kHz.
The sixth speaker, the subwoofer, has a frequency response of only 3Hz to 120Hz. The subwoofer is the .1 in 5.1.
Standards which Use 5.1 Channel Speakers
5.1 channel speakers are used in movie theaters by:
- Dolby Stereo Digital (DSD)
- Digital Theater Systems DTS
- Sony Dynamic Digital Sound (SDDS)
5.1 channel speakers are used in home entertainment systems by Dolby Surround Digital, which is similar to the Dolby Stereo Digital format used in theaters.
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