To remove the pads, grip the pad on the inside and pry outward. It will snap out. Save the foam pad (unless your replacing that as well) Just push the new pad till you hear the clasps snap back into place. 

I believe I can shed some light on this subject. Your both right. The Sony MDR V6 have awesome slamming bass and a distinct lack thereof. Or more precise, they all slam, some are just overshadowed. What does that mean? Well. Let me explain. You all have different sets. Simple as that.  My...