hey guys, my current setup consists of one 12" IDMAX V2 2OHM DVC sub in a sealed enclosure powered by a PPI PC2200 giving the sub about 800 watts RMS. I've had this for about 3 years now and it has always hit hard, deep and heavy. With pop and rock, bass was tight and clear. With rap and bass songs, the bass had force and hit fairly deep...not an ounce of "boominess" However, sometime last week, my setup just seemed to have lost it's "depth". Pop/rock songs still sound the way they used to, but with rap songs, the sub just can't handle deep notes like it used to and I don't feel the bass pressure as much. It's become rather boomy with songs that it used to be able to play at much higher levels. So, does a sub just go bad all of a sudden? And if it is the sub, why is it still hitting pretty tight and clear with pop songs? Can a sub just lose its ability to handle ultra-deep bass but still handle higher bass notes well?? How would i be able to determine if it is the sub? Did one voice coil go bad? Or is it the box? Would an air leak cause this? any advice would be great!