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Extending 100W soundbar power cable

Discussion in 'Electrics UK' started by john2k, 12 Sep 2017.

  1. john2k

    john2k

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    I have the following LG 100W soundbar: http://www.lg.com/us/home-audio/lg-LAS260B-sound-bar.

    The tech specs of the soundbar says Power Consumption is 27W. As I am going to be placing the soundbar quite high up, I need to cut the plug off and couple it. I got the following coupler from maplin: https://www.maplin.co.uk/p/5a-permanent-mains-flex-connector-2-core-white-vj81c

    I have a spare brand new figure-8 power cable which I was thinking to just cut-off the figure-8 part and then couple it with the maplin coupler. The plug on my figure 8 cable has a 3A plug. The question is, will 3A be enough for the soundbar and will the figure 8 cable be ok to handle the power? Not sure what amp fuse is currently inside the plug of the soundbar.
     
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  3. EFLImpudence

    EFLImpudence

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    The specs (and the headline) in your link say total power is 100W but that is still less than half an amp, so -

    Yes.
     
  4. ban-all-sheds

    ban-all-sheds

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    Last edited: 12 Sep 2017
  5. winston1

    winston1

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    Wish I could turn 27 watts into 100 watts. They are lying, it can't possibly be 100 watts output.
     
  6. davelx

    davelx

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    100 w peak music power, probably about 20 to 25W RMS sine wave continuous

    https://en.m.wikipedia.org/wiki/Audio_power
     
    Last edited: 12 Sep 2017
  7. Robin0577

    Robin0577

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    Or even just buy a longer cable ready made, e.g. http://cpc.farnell.com/pro-elec/pe01082/lead-13a-plug-to-fig-8-c7-5m-black/dp/PL13370

    Ok, admittedly I'm assuming your existing cable is the typical 1.5-2m normally supplied with such things, and over double that would be adequate.
     
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  9. muffking

    muffking

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    The music power may be 100W, but the power consumption is rated at 27W @ 230v.
    Feel free to test my maths here, but doesn't that make it draw only 0.117A
     
  10. davelx

    davelx

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    Average, yes. Which as far as the fuse and cable is concerned is what you need to know. Did you read the wiki?
     
  11. muffking

    muffking

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    No, that was based on a calculation from my old college days. I've just started Level 2 and we have not done the science part yet so I'm trying to keep my hand in.
    I'd be interested in knowing Wiki you were referring to so I could look it up.
     
  12. FrodoOne

    FrodoOne

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    May I ask why are you putting the soundbar "quite high up"?

    It is intended to be placed in front of or under the TV!
     
  13. winston1

    winston1

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    Only if the sound bar has unity power factor. Did you learn about power factor in your old college days?
     
  14. muffking

    muffking

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    No, I've got all that to come.
    My understanding is that it's a ratio of how watts relate to the calculation based on the value of voltage and current?
     
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