I recently bought a new amp (a1750d) from soundqubed.com
I have a rockfordfosgate p3 dvc 2ohm sub
I wired my sub to 1ohm and connected it to the amp, but it wouldn't play.
The green power button was on and all the connections were connctedted...but it would not play
So then I rewired everything back to my old amp and my sub worked......