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Here’s a closer look at HDMI ARC and eARC, including an audio quality comparison and downsides to both connection types to help you decide when it’s best to opt for either HDMI ARC or eARC. But physical media, like Blu-ray discs or game discs for consoles, along with certain downloaded music files, use a higher quality version of Dolby Atmos thanks to the lossless, hi-res capabilities of Dolby TrueHD. For instance, some TVs will play Dolby Atmos using their built-in speakers, but they can’t pass along that same Dolby Atmos content via their HDMI ARC connection (known as Dolby Atmos passthrough). With HDMI ARC, you can ditch your soundbar or receiver’s remotes - as soon as you start watching content that originates from your TV, your connected soundbar or receiver will automatically switch to the correct input. Typical sources of high-quality audio (Blu-ray players mainly) can be plugged into this gear directly, without relying on the TV’s audio capabilities. Before the advent of HDMI ARC, if you wanted to hear these sources on your receiver’s speakers instead of the ones built into your TV, you needed to run a second cable (typically an optical cable) from your TV back to your receiver.

It’s especially handy for those who own a Dolby Atmos-capable soundbar, like the Sonos Beam (gen-2), Sonos Arc, or Bose Smart Soundbar 900 as these speakers don’t have their own HDMI inputs. Right now, eARC is going to be most useful for folks who connect all of their content devices to their TV’s HDMI inputs, instead of the inputs on a soundbar or AV receiver. All project content written and produced by Mike Edwards, founder of DIY Doctor and industry expert in building technology. Don't fancy doing this project yourself? The US Federal Communications Commission (FCC) has ruled that consumers can obtain a cable card from their local MSO to authorize viewing digital channels. The DOCSIS standard became available to consumers in the late 1990s, to provide Internet access to cable television residential customers. The only exception to this was HDMI Consumer Electronics Control (CEC) - a very low-bandwidth set of commands that could be sent in both directions along an HDMI cable so that a TV’s remote could control an AV receiver’s volume or the power button on an AV receiver’s remote could turn off a TV. So while it’s still recommended to keep CEC enabled (turning it off means you won’t be able to send device commands over HDMI), if it’s causing you headaches, it might be possible to use eARC without CEC.

When would I use eARC? But if you’re setting up a decent sound system with your TV, you’ll probably read something about HDMI ARC and eARC ports in the owner’s manual. However, if you’re buying a small TV for a kitchen or bedroom, and you have no intention of ever connecting it to an external soundbar or receiver, you can probably stick with HDMI ARC (or indeed, no HDMI ARC). If you own an AV receiver, and you plug in your Blu-ray players, game consoles, or streaming device into it, the receiver will play the audio portion through your home theater speakers and send the video portion along to your TV. But not every source of video you might want to watch comes from an external device. Why would you want to do that? Not only does a Google or an Amazon want a network POP in Europe that’s the shortest possible distance from Singapore, it now also wants to store tons of content near that POP. Normally, when using an optical connection from a TV to a receiver or soundbar, you need to manually switch to the optical input when you want to hear your TV’s sound, and then switch back to the HDMI inputs on the receiver or soundbar when you want to go back to watching an external source of content.

Without an eARC port on your TV, it won’t matter if you have the most expensive Blu-ray player connected to one of its other inputs - you won’t be able to transmit hi-res, lossless audio (whether Dolby Atmos or any other format) to your external audio devices. However, throw a newer surround sound format at it, like Dolby Atmos or DTS:X, and it chokes. ’s the same kind of Atmos that these services use. There’s also the possibility that streaming services will decide to offer lossless audio as an upgrade in the future. One of the key lingering questions for those considering social distribution is whether these networks will offer a la carte plus bundled content subscriptions - a move that would formalize their role in the content ecosystem, enable content owners to capture more value from social distribution, and position the social networks as digital-era MVPDs. In most cases there will be some kind over cover over the terminals to protect them and prevent shocks and anything from touching the live terminal. Remove this for now.With the terminals exposed, we used a screwdriver to loosen each one and then connected the red to the "L" terminal, the black to the "N" terminal and the yellow and green to the "E" terminal.The protective cover was then refitted to hide and protect everything.Just to make sure all was well, the power was then turned back on to make sure the cooker fired up.

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