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Stereo lighting christmas light bulbs

Discussion in 'LEDs and Optoelectronics' started by Rickedafied, Sep 8, 2014.

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  1. Rickedafied

    Rickedafied

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    Aug 3, 2014
    Is it safe to connect a small strand of Christmas light bulbs to the speaker outputs of the stereo?
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    It is safe, but what is the use of this? They probably won't light up at all because the voltage at the speaker output of a typical amplifier is too low for the light bulbs to turn on.

    If you expect the lights to flicker to the rhythm of the music, build a light organ.
     
  3. Rickedafied

    Rickedafied

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    Aug 3, 2014
    Ive seen the lights that flash to the sound of music, but i like how the light bulbs of christmas lights start off dim and get brighter ass you add volume and bass. I tried it years ago on a different stereo using about 4 or 5 bulbs and it worked, i wanted to try it again, but I wanted to make sure im not overheating any components in the stereo that might blow out. I never thought about ohms and resistors back then when i was messing around connecting different ohm speakers and light bulbs. I just wanted to be sure that this time when connecting them, that I'm doing it right.
     
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    2,716
    Nov 17, 2011
    Check the resistance of your bulbs. It should not be less than the rating of your amp (typ. 4 Ω/speaker). If your light bulbs show less resistance, you risk overloading the amplifier.
     
  5. Rickedafied

    Rickedafied

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    Aug 3, 2014
    The stereo powers 8 ohm speakers. So anything higher than 8 ohms is safe right?
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Most probably yes.
     
  7. Rickedafied

    Rickedafied

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    Aug 3, 2014
    Ok, thanks!
     
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