Hey gang-

I was working at my desk this morning when suddenly it seemed I lost the higher frequencies to my speaker system. I use a powered Altec Lansing system with 2 tweeters and 1 sub woofer.

But, its even more weird.

If I listen to You tube videos, I can hear the low frequencies but not any speaking or singing. I've doubled checked all the connections and they seem to be fine. I've tried a restart and the short burst of music you hear during XP's startup sounds fine. (I think, lol...)

My mp3 files also only play the low frequencies, can't really hear any of the upper stuff.

I've also tried Skype & Sirius/XM on line and the same things happens. It sounds all muddy and isn't as loud as it usually is.

I've tried to check my drivers, best I can tell, they are all current.

Any ideas on how to fix this? Thanks!