![]() ![]() In short, passthrough is just an option that allows you to get surround sound for multiple source devices with fewer cables. A 5.1 setup is one of the different configurations you can have, and it's used more with Dolby Digital and DTS signals, while newer formats like Dolby Atmos and DTS:X use more speakers, like 7.1, 5.1.4, etc. You can see that two cables are going to the TV - one for the video and one for the audio. This image is an example of a 5.1 surround sound setup with a TV that doesn’t support passthrough. You can still get the same audio-video experience without passthrough, but you'll have more wires going to and from your TV. Passthrough isn’t a necessity, and it's only important if you have a surround sound setup or a dedicated soundbar. If you use the TV’s speakers, you don’t need to worry about passthrough because sound is played from the TV directly. At least one source device capable of outputting an audio signal.A speaker system with an HDMI ARC or Digital Optical output.Passthrough is only helpful when you have the following: It's important to have a TV that supports passthrough if you watch movies with these audio formats, like Blu-rays that tend to have DTS:X audio. Most TVs support some sort of audio passthrough over ARC and Digital Optical connections, while more TVs are starting to come out with eARC support for lossless Dolby Atmos and DTS:X signals. ARC mean for cables? As A/V data channels go, the HDMI eARC is the best, and here’s why … HDMI Licensing Administrator, Inc.Some TVs can only pass audio when it's in a certain format (DTS or Dolby), while others can pass both audio formats. With the introduction of the much higher-bandwidth Enhanced Audio Return Channel (eARC) HDMI protocol in 2017, lip-sync correction was made mandatory, CEC setup was often simplified, and full audio codec support became much more widespread. However, not all electronics manufacturers adopted all the ARC capabilities across the board. ARC also enabled the TV manufacturers to correct lip-synching problems between the TV’s video and the soundbar’s audio. ARC has a higher maximum audio bandwidth than optical connections, and ARC also supported Consumer Electronics Control (CEC), which meant that a remote for the TV could also control the power, volume, and mute functions of the soundbar. When the Audio Return Channel (ARC) standard was introduced to HDMI cables in 2009, it allowed for convenient two-way communication over a single HDMI cable between a compatible TV and an equally equipped soundbar or A/V receiver. Whatever your sources, you’re going to want to get the most sound with the least amount of cables connecting a soundbar to a TV. Or you’ve going to plug an Apple TV and a PlayStation 5 into your TV. So you’ve got a new smart TV with built-in Netflix, Amazon Prime Video, etc. And it’s no surprise that soundbars, which can supplement those tinny tones with almost movie theater-level audio, seem to grow in popularity every year. If you’re planning to upgrade your home theater, you want to make sure you’re getting all the thrills you paid for, so here’s our guide on how to connect a soundbar to a TV and what you should know when picking HDMI vs optical cables. ![]() While the picture quality of the best TVs seems to improve year over year, the internal speakers of these increasingly slim, stunning panels don’t really do those vivid images justice … which is why you want to connect a soundbar. We may earn revenue from the products available on this page and participate in affiliate programs. ![]()
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