Question

Sonos Arc (Dolby Atmos) with 4K Projector vs. TV

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34 replies

A

I don’t think so, I think it is because the way ARC or eARC outputs the sound. For reference what I did, which is really kludgy is take a Samsung TV I had that had eARC (tu8000) then ran a HDMI matrix splitter with two outputs. One to projector and one to Samsung, then Samsung eARC back to the Sonos Arc. It works for Atmos, but is messy.

Dang. That was my biggest fear. Thanks for the heads up. Here’s to hoping they have some kind of fix for this soon. Trying to determine what to do once I get a PS5 with my projector, currently using a playbar and some 1s for surrounds, might just have to look for something else.  

J

@jgatie Does that mean that streaming devices, like a newer Apple TV, connected to the LG C9 would not be Atmos compatible with the Sonos Arc?

Airgetlam

The Sonos Arc isn’t what needs an update. It works fine. It is looking for an HDMI ARC signal, unless you’re using the optical cable connected to the adapter that the Arc comes with. You can’t feed a normal HDMI signal to the Arc using any splitter, as that would be just the normal HDMI signal, not the HDMI ARC signal the Arc is looking for. 

Bruce
A

My assumption is that it has to be (or Sonos wants it to be) eARC because it’s a sort of data protocol that negotiates playback in order to be synced with the video. I could be wrong. However yeah, very few TV’s out there support Atmos over eARC. So it’s rather misleading for Sonos to say it supports Atmos, when this is only true if your TV has eARC with support for Atmos. I have a late 2018 model and it only has regular ARC with Dolby surround as the highest compatible so a real bummer!

I hope the HDFury device works out. Personally I don’t like the idea of sending the signal through a switch then through the HDFury, and then finally the TV, is there signal degradation or quality loss? But I think it will be fine.

Sonos seemed to favor simplicity but just adding a output or two on the soundbar would have really helped avoid all these compatibility issues.

D

would an hdmi switcher like this not work?  Not sure of the price and may not be worth it as I know these can be pricey.  But it says it splits hdmi audio and video and “supports audio pass-through up to dolby ATMOS”.   

 

https://muxlab.com/pro-digital/6x1-2-0-multimedia-presentation-switch 

C

Would something like this not work? It’s not technically splitting the audio from the video signal, but if you sent the regular hdmi out to the projector and the ARC hdmi out to the soundbar would that not work to get an atmos audio signal to the soundbar and an image to the projector?

 

https://www.amazon.com/NEWCARE-HDMI-Matrix-Switch-Splitter/dp/B07ZNKF7C8/ref=sr_1_11?dchild=1&keywords=hdmi%2Baudio%2Bvideo%2Bsplitter%2Barc%2Bdolby%2Batmos&qid=1591905756&s=electronics&sr=1-11&th=1

 

Airgetlam

It doesn’t create the ARC Or eARC signal, it just passes the one created by the TV. 

Bruce
D

Lovely.  I just got notice that my ARC has shipped.  Doesn't look like I’m going to get the upgrade over the playbar, I’m currently using, that I was hoping for.  

D

I’ll take a look at it.  By way of an update - new ARC speaker arrived yesterday and I can’t get it to work even using the hdmi to TOSLINK (optical) adapter they include in the box.  Makes no sense.  My prior setup was an HDMI in, to an optical and hdmi out splitter (hdmi going to projector and optical to playbar).  Not sure why it wont work now when all I did was add the adapter to the optical out.  Frustrating!

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