I have recently been introduced to the joy of
Infra-sound by my brother... we though it would be a good idea to play a 17Hz sine wave from my computer, which has a subwoofer, but I don't know if it works, or even if I have drivers for it. Anyhow, after about 2minutes, my computer appeared to start smoking, the smoke seemingly disappeared after we turned the sound off. Now my computer smells of burning.