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Thread: Optical to coax convertor?

  1. #1
    Join Date: May 2012

    Location: Toulouse

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    I'm GettingFunky.

    Default Optical to coax convertor?

    Can anyone recommend a good, but cheap optical to coax convertor?
    A PC upgrade means I have lost my coax out, but have a digital optical.
    I use a 5m long cable to run to my DAC, so changing to an optical cable is out of the question.
    Contemplating life, the universe and use of HiFi forums.

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  2. #2
    Join Date: Oct 2008

    Location: Glasgowshire

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    I'm availableforweddingsAndBarmitzvas.

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    Hi mate

    I'd go with this one.
    https://www.amazon.co.uk/POF-830-Opt...?tag=whhifi-21

    Any jitter it introduces (if any and probably not?) would be sorted by your Standac.

  3. #3
    Join Date: May 2012

    Location: Toulouse

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    Thanks for the suggestion Gaz.
    I plugged it in yesterday, and immediately disconnected it. Unfortunately it is distorting the sound, so it will be going back.

    Back to the drawing board.
    I have reverted back to the USB cable for now, but I am still looking for a decent optical to coax converter.
    Contemplating life, the universe and use of HiFi forums.

    Life is too short to worry about the opinion of others.

  4. #4
    Join Date: Feb 2011

    Location: England

    Posts: 282
    I'm James.

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    With Optical and Coax you're limited to 192kHz or maybe even 96kHz.
    Using your USB you will have access to the higher Sampling rates, if your DAC accepts them and your PC outputs them.

    Searching online just shows up the same box that you tried.
    There's not a lot in these things to go wrong, TOSLINK receiver, 74HCU04 or similar, an O/P matching Transformer and an RCA Socket.
    Have you another coming?

    If you really get no-where I may have all the bits needed to make you one !!

    Jim.

  5. #5
    Join Date: May 2012

    Location: Toulouse

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    I'm GettingFunky.

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    Jim,

    Thanks for the offer.

    I need to check what the PC outputs on the optical output.
    I am currently looking into a decent sound cad for the new PC, or building my old PC into a smaller case to have a dedicated media server. The other option is a new USB card as most of my USB ports are full, and to stream, I need to disconnect something.

    As you mention, the other option is to try another of these boxes as I think mine is faulty. That will only cost me a bit of time.
    Contemplating life, the universe and use of HiFi forums.

    Life is too short to worry about the opinion of others.

  6. #6
    Join Date: Dec 2014

    Location: UK, East Midlands

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    I'm Mike.

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    Quote Originally Posted by CageyH View Post
    Can anyone recommend a good, but cheap optical to coax convertor?
    Lindy do an optical/coax converter - I have one of their mini-DACs and it does a good job.
    https://www.lindy.co.uk/audio-video-...repeater-p2732

  7. #7
    Join Date: Feb 2011

    Location: England

    Posts: 282
    I'm James.

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    Quote Originally Posted by CageyH View Post
    .......I need to check what the PC outputs on the optical output.......
    Good point this. PC upgrade, it could be outputting in Dolby Digital or DTS or similar which a Stereo DAC will reprduce as noise.

    Jim.

  8. #8
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,102

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    With optical from a PC you get isolation from mains and ground noise born interference. You also get a far stronger digital signal. On Toslink it is typical 3.3V or 5V. On coax it is just 0.6V. But the added noise in the coax connection does give an added sense of more info in the audio.
    Most optical to coax converters struggle to convert anything above 48kHz. I tested quite a few with the intention of selling one. But they all failed to play 96kHZ or above. But that is some time ago. Maybe they have improved since then.

  9. #9
    Join Date: Feb 2011

    Location: glasgow

    Posts: 2,194
    I'm tony.

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    A 5m fisual optical like the pearl or hollywood are round about a tenner. Convertors cany vary quite a bit sonically, then different co-ax!!

    The fisuals are great bang for buck-think the holywood is glass if memory serves.

  10. #10
    Join Date: May 2012

    Location: Toulouse

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    I'm GettingFunky.

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    Thanks.
    I will look into an optical cable. The good thing about the RG316 coax is that it is very easy to hide. I think the optical cable will be a bit bigger.
    Contemplating life, the universe and use of HiFi forums.

    Life is too short to worry about the opinion of others.

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