DJ isn't going to tell anyone to run 5kw daily on his subs. LOL He knows that I did it though.
I had it on 4 DD M1a's, and it was a dual 2 sub. Only way to hook it up was a pair of amps strapped per coil.....so strapped at 2 = 1 ohm per amp. That's 4800 rated watts. After impedance rise, depending on frequency, it was running between 2-3kw clamped. I could overheat the sub with that much amp power, but it was pretty much full tilt before it would. Here is a thread of a video of some testing that I did.
http://www.caraudio.com/forum/showthread.php?t=263613&highlight=AQ+HDC3
BTW there is more than just me that has ran that amount of power on the HD3c's daily.