edit:   turns out i open up my headphone and the driver fell out of the spot its held it and was shaking around... suprized i didn't damage the drivers any further from it jingling around.   popped it back into place and everything is fine now.

Hi, I don't know when this problem started, but I've only started to notice the left side of the headphones, the sound is not as "Rich" or full as the one on the right. I can't really pinpoint it, but it sounds like its lacking a bit of bass and some "fullness"... wondering what options I can...