It's barely a month old, has 4" coils, and iirc a 9in. diameter 1.3" slug motor.
It will take a lot of power, and I only had it on 2 aq 1200s
Still in perfect condition.
The first vid shows me taking it out of my wall, and the second shows clear shots of the sub cleaned up.
http://www.youtube.com/watch?v=0p2lYEziNoI
http://www.youtube.com/watch?v=IczU5VSc9CE
$500 + ship