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Soundbar and connections?

  • 20-09-2016 08:10AM
    #1
    Talula_d
    Registered Users, Registered Users 2 Posts: 305 ✭✭


    I am looking to buy a soundbar, I have picked one out, finally went to get it yesterday and was told it only works by optical cable which is not included? And would cost a further €50/60. Do all soundbars not include this cable? And if not what should i be looking for in the cable as I have seen them priced much lower online!


Comments

  • #2
    akaSol
    Registered Users, Registered Users 2 Posts: 717 ✭✭✭akaSol


    Talula_d wrote: »
    I am looking to buy a soundbar, I have picked one out, finally went to get it yesterday and was told it only works by optical cable which is not included? And would cost a further €50/60. Do all soundbars not include this cable? And if not what should i be looking for in the cable as I have seen them priced much lower online!

    €10 if you are feeling generous!
    The only two differences between optical cables is a glass / plastic end cap. The difference on the the speed of light in oxygen is :2.981 x 10^8 ms^-1
    But a poor quality cable may half that ( ie half of a second)

    What it means without the degree in physics / maths is you set the delay in sound a little off to compensate.

    BTW what was the brand of cable (although I can probably guess)


  • #3
    mossym
    Moderators, Sports Moderators Posts: 8,766 Mod ✭✭✭✭mossym


    you need to redo that maths akaSol

    speed of light is 299 792 458 m / s

    to get half a second delay, you'd need a cable length of 150,000kilometres. even if the cable halved the speed, you'd need a cable of 75000km, or have it wrapped around the diameter of the earth 6 times.

    any optical cable isn't going to delay the audio enough to be perceptible compared to any other optical cable

    OP, 1m for 2gbp, 3m for less than 10. will work just fine.
    https://www.amazon.co.uk/REALMAX%C2%AE-Toslink-Digital-Optical-supports/dp/B014T420YG/ref=sr_1_3?ie=UTF8&qid=1474541866&sr=8-3&keywords=optical+cable


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