Okay, so i've had these nice speakers for about 3-5 years now, and today when i plugged them into my laptop the subwoofer stopped working. Actually it still works but is very, VERY quiet. Like you can't hear it but I can still feel the vibration of it when i put my hand on it. The two left and right speakers still work fine, but the big back speaker isn't.
Any ideas?
(these are what they look like)