It is possible that you increased the bass coming from your sound card (or decreased the trebel, same diff). I once had a computer I could do this on, but I haven't seen one like that for a while. Now the frequency control is all in the media players.
You might want to try turning or giggling your speaker connectors. Corrosion or looseness can do weird things.
My mp3 player, for example, eliminates the exact frequencies of human voice when the headphone jack is unplugged half way, and my CD player increases the bass (
) when I do the same to it.
Edited by Lanscader, 28 August 2005 - 01:09 AM.