Impedance amp see's

[cubdenno 0]

Not really sure what I am asking here but here goes.

I am running a TC3000 15"DVC sub. Each coil is 2ohms. I am running this parallel to a SAZ1500d for a 1 ohm load. With no music this specs out at about a perfect 1 ohm at the box terminals. Now whem I measure resistance while music is playing using my trusty calibrated Fluke 87 DMM, The lowest I am seeing resistance-wise is above 3 ohms. It never gets below and of course we are not going to discuss the high point. This is all done on a 60-20 htz sweep. So one of my questions is, does this mean that my sub is at most only getting 500 ish watts? I suppose what I need to do next is measure voltage and current. Was just doing some testing with my son before we build his box. And had no way of explaining what was really happening. Any input would be great. As always, just trying to learn.