What year is the sub? I have the 2002 version running on a Sundown 1000D at 2 ohms (600 watts) and it bottoms the sub out pretty easily... I hate the Kicker sub.
2005 I believe. No problems with bottoming out, just a slight noise at low volume. Like the cone is smacking itself or something like that. Coils read fine, no scratching when I push down on the VC either. I really don't care, I can only hear it when I got my head in the trunk listening.