View original (French)

Connecting LEDs to speakers

reloop -  
 reloop -
Hello,
I heard that it's possible to connect LEDs to speakers... is that true??

And if so, how do you do it?!? With an audio controller?!? Is there no way to connect them to the same wires as the sound?!?

Thanks in advance

Configuration: Windows Vista / Firefox 3.6.3

6 answers

  1. Xpress
     
    You can indeed connect one or more "LEDs" in parallel to the speaker coil. That said, since the voltage is quite low at the output (amplifier -> speaker), you will have low brightness on the LEDs, but they will blink to the rhythm of the music.

    But what exactly do you want to do, place LEDs on the speaker or the speaker cabinet?
    Because if you don't want to mess up your speakers, try the setup on a speaker that you don't need in case you make a mistake.
    1
  2. fabul Posted messages 42153 Registration date   Status Moderator Last intervention   6 066
     
    I would add that you should get an amplifier that isn't expensive; it's more likely that the amplifier will burn out if you connect something in parallel.

    Although I've never calculated the resistance or impedance of the LEDs, I’m saying this just in case.

    In fact, it’s true that there isn’t really any metal contact between the + and - (it's a gas).
    1
  3. reloop
     
    Let's say that I actually have several ideas...

    My first idea would be to light up the speakers with 2-3 LEDs... the problem is that it's not really possible to pull another wire since it's AP and I barely managed to hide the cables for the speakers, so... a second one won't work... and I still have a Logitech Z5500 home theater... so I don't want to destroy it^^

    Otherwise, I had another idea, it would be to put LEDs all around my room and either make them flash in sync with the music (I think I would need a light controller per BPM, right?!?)

    Or create a sort of scene (that turns on and off one after the other (I think I would need to create a small printed circuit with relays for that, right?!?)

    I don't know if you can answer me, but for 3.6v-3.8v LEDs, how would you power them? With what transformer or other technique?

    Thanks in advance
    0
  6. mushu14 Posted messages 11897 Registration date   Status Contributor Last intervention   1 123
     
    hi,
    if you do some tinkering, check out here
    --
    the return......
    0
  7. reloop
     
    So I understand the basics of electronics (I'm more into high voltage) and English not at all^^ so it's quite hard but I'll take a look anyway

    thank you
    0