I'm not sure if they offer a 2 ohm DVC version, but the highest end MothaFunkin' Audio subwoofer stood up to a lot of abuse during the test session //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Might laugh at the name, but that sub laughed at the 7kW or so we threw at it...
People run them on Z1's, which does more power than 4kw. Music is dynamic you will never see that 4kw daily. The 9500 has crazy cooling over the HD3 and with alot of power you will need it.
SS XXX, DD 9500/9900, Atomic APXX, Funkin MF(believe its right around $600 for em), T3, MT, Shocker(im sure one of their subs can do 4KW)......thts all i could think of off the top of my head...