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It provides extra bass and clutter-free experience to the home-theater system and is commonly used to enjoy TV and music.Ī 3.1 sound system consists of four speakers-three main speakers are positioned in the left, right, and center and one subwoofer should be positioned in the center of the complete setup. Both speakers should be compatible with the TV, DVD, mobile, desktop, etc., and mostly used to listen to music.Ī 2.1 stereo sound system comes with a subwoofer that improves the sound quality of a 2.0 system. 2).Ģ.0 is a basic stereo speaker system that has two speakers, one to the right and the other to the left side of the TV powered by a receiver or amplifier.
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For example, 7.1.2 channel speakers have seven main speakers, one subwoofer, and two height speakers that are connected (Fig. For surround-sound systems, the first number defines the number of main speakers, the second number defines the number of subwoofers, and the third number defines the number of height speakers. In the process of setting up a surround-sound receiver, you will often come across numbers like 2.1, 5.1, 5.1.2, 7.1, 7.1.2, 9.1, and so on. Surround-Sound Channels Explained: 2.1, 3.1, 5.1, 7.1, and More Finally, the sounds are sent to the appropriate speakers. The decoder sorts out different sounds from the video and sends the info to the amplifiers to find their respective channel output. Next, the receiver sends the video signals to the output device (TV, monitor, etc.) and audio signals to the decoders. The user chooses which input component needs to be fed to the output device and then the preamplifier selects that signal and amplifies it wherever needed. The source devices send the audio and video signals to the receiver device. The processing of audio and video signals is simple. Surround-sound decoders (Dolby Digital, Dolby TrueHD, Dolby Atmos).AV input/output (S/PDIF, HDMI, USB, RCA).The primary function of receivers is to receive, interpret, and process the audio/video signals and transmit them over some output devices. The main purpose of AV receivers is to receive the audio or video signals from several sources and route those signals through devices like the TV, speakers, monitor, projector, etc. But have you ever thought about the actual brain-the audio/video (AV) receiver-working behind the complete home-theater system? AV receivers are the hub of a home-theater system and provide the main source of power (Fig.