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86 posts

Master Geek

#271722 24-May-2020 17:52
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We picked up a Panasonic Freeview box but discovered it only has digital coaxial sound output. Our sound system is circa 2012 and has RCA and optical sound input only.


Is there a cheap way to get the coax out to RCA? Anyone have any recommendations? Investing in a whole new sound system seems overkill. I've seen some cheap converter boxes on Trademe but I wonder if they work well esp. for surround sound?

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Uber Geek

  #2490673 24-May-2020 20:18
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RCA is coaxial.

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Uber Geek


  #2490677 24-May-2020 20:29
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RCA is coaxial.

Fair to assume the OP means left/right line level audio when they say RCA.

There are lots of cheap coax to optical audio adapters around - try jaycar


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  #2490680 24-May-2020 20:33
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Meant to add - coax audio to optical should keep it digital and preserve surround sound

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  #2490695 24-May-2020 20:41
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I bought a box like this one from jaycar ages ago, but it was grey and way more expenive. Worked fine. They dont seem to sell it anymore.


Used it because coax from the garage veon TV to the amp would always drop out with powertools switching on and off etc and also having it there made the HDMI into the TV freak out in those same power transients. Going optical there broke the ground loop and happiness was restored mostly except for the fire TV box which had the most dropout prone HDMI output I have ever had. Still 90% better tho.




The signal is the same between the 2 formats, you could possibly get an optical tranmitter off an old motherboard or dvd player or other obsolete equipment and hook it up to the coax out and a 5v supply if the pretty box version is too hard to find.


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Uber Geek

  #2490705 24-May-2020 21:12
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Fair to assume the OP means left/right line level audio when they say RCA.


Of course. I immediately thought SPDIF over RCA coax.

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Ultimate Geek

  #2500318 8-Jun-2020 08:59
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I got one of these from Amazon and used You Shop for delivery




Seems to do the trick.

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