It seems like after a couple years of consistent and hard service my 1212L is sounding a little less clean and a little less full, it's subtle. I've also experienced this with other cabs in the past. There's no blown drivers(nothing sounds blown, I haven't ohm'd anything or performed any DMM checks), every screw and every component is secure, there's nothing structurally wrong with the cabinet. The cones are clean and dry. I'm curious, the blowing of drivers is pretty well understood, but what about drivers "wearing-out" or "wearing-down" over time? I know that we bassists can become almost over-familiar with the tone of our cabinets over a period of time while our tastes are simultaneously drifting gradually. I'm sure this is part of the equation, but I'm also sure my cab sounds different than it did a year ago. Any thoughts??