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manu1361
Contributor I
September 30, 2022
Answered

Connecting Beam gen2 to BenQ projector via ARC

Hello there, need a little help finishing my setup.

My setup includes:

Sonos Beam gen2

BenQ tk700sti eARC supported 4K projector

 

I read a few articles online and follow the troubleshooting steps but nothing help.

Running out of idea and would need some help.

 

I went as simple as I could and ran an HDMI cable from the HDMI 2 slot of the projector to the Beam but the speaker won’t detect it for some reason ?

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Airgetlam
AirgetlamAnswer
October 1, 2022

I’d guess there is a manufacturing fault in that cable. Based on those specs printed on it, I’d expect it should have worked….so I wouldn’t blame the installer except for not testing after installation. I was just lucky, just because it didn’t match the look of the Sonos cable. 
 

Don’t overspend on HDMI, they’re digital, but you’d be looking for any HDMI 2.1 (high speed) type cable. I tend to use Belkins, bought from Blue Jeans cable, sometimes direct, some times through Amazon. Don’t get pulled in by the Monster Cable hype ;)

Bruce
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Airgetlam
Airgetlam
October 4, 2022

The problem is that I don’t think you can say “generic HDMI” without indicating which version of HDMI. 

I suspect that HDMI 2.1 cables of 10’ or 10m would work. Especially any that would be marked as “high speed” specifically.  Sonos is supposed to work on HDMI 1.4 cables, but at greater lengths, I’d want to up my game a bit, which is why I’m suggesting HDMI 2.1 cables. There’s been a lot of innovation/knowledge gained between those two specifications. 

But that’s a guess. You’re certainly on the right track. I’d be reviewing all the data on various websites about HDMI, including wikipedia and Blue Jeans Cables for more data. Wikipedia is often accurate, but not always, so it’s one source, but not the end all of everything, due to the nature of “crowd sourcing”. 

Bruce
buzz
buzz
Grand Maestro
October 4, 2022

eARC requires higher bandwidth cables and bandwidth decreases with length. 10m requires very high quality cables. Price alone will not predict success. The cable manufacturer needs to have good quality control.

Use a certified cable. 

    manu1361Author
    Contributor I
    October 5, 2022

     

    This is the second 10 meter cable I tried, which specified they guarantee ARC over 10 meters

    buzz
    buzz
    Grand Maestro
    October 5, 2022

    Since you specified cable length in meters, you probably don’t live in the US. I was not very successful finding 10m certified cables. Likely anything I find will be from US based companies and may be difficult to ship elsewhere. I was able to find this cable. I know nothing about this company or availability outside of the US. I’m also not sure about their “certification” There is a specific logo associated with official certification. It’s an expensive test and the manufacturer is authorized to show its unique logo as proof of certification. I expect that cables passing this test would proudly display the logo.

      manu1361Author
      Contributor I
      October 16, 2022

      happy udpate, received this cable today and it works perfectly.

      I'll still try it out for a day or two before I run it in the ceiling and should be all good !

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