Hi!
I have been thinking about this project that makes LED lights blink at the rythm of the music. If I understand these things right then I can do this by adding LEDs to a speaker, on a wire before the wire reaches the actual speaker part. Before I "destroyed" my speaker I wanted to try it with some headphones, but didn't work, but thats probably because of the low voltage. I have at home speakers that uses wires outside the speaker (like most home theaters) so I added the LED there, but nothing. What I'm doing wrong?